text: !function () {
      var d3 = {
          version: "3.5.3"
      };
      if (!Date.now) Date.now = function () {
          return +new Date();
      };
      var d3_arraySlice = [].slice, d3_array = function (list) {
          return d3_arraySlice.call(list);
      };
      var d3_document = document, d3_documentElement = d3_document.documentElement, d3_window = window;
      try {
          d3_array(d3_documentElement.childNodes)[0].nodeType;
      } catch (e) {
          d3_array = function (list) {
              var i = list.length, array = new Array(i);
              while (i--) array[i] = list[i];
              return array;
          };
      }
      try {
          d3_document.createElement("div").style.setProperty("opacity", 0, "");
      } catch (error) {
          var d3_element_prototype = d3_window.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = d3_window.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
          d3_element_prototype.setAttribute = function (name, value) {
              d3_element_setAttribute.call(this, name, value + "");
          };
          d3_element_prototype.setAttributeNS = function (space, local, value) {
              d3_element_setAttributeNS.call(this, space, local, value + "");
          };
          d3_style_prototype.setProperty = function (name, value, priority) {
              d3_style_setProperty.call(this, name, value + "", priority);
          };
      }
      d3.ascending = d3_ascending;
      function d3_ascending(a, b) {
          return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
      }
  
      d3.descending = function (a, b) {
          return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
      };
      d3.min = function (array, f) {
          var i = -1, n = array.length, a, b;
          if (arguments.length === 1) {
              while (++i < n) if ((b = array[i]) != null && b >= b) {
                  a = b;
                  break;
              }
              while (++i < n) if ((b = array[i]) != null && a > b) a = b;
          } else {
              while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
                  a = b;
                  break;
              }
              while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
          }
          return a;
      };
      d3.max = function (array, f) {
          var i = -1, n = array.length, a, b;
          if (arguments.length === 1) {
              while (++i < n) if ((b = array[i]) != null && b >= b) {
                  a = b;
                  break;
              }
              while (++i < n) if ((b = array[i]) != null && b > a) a = b;
          } else {
              while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
                  a = b;
                  break;
              }
              while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
          }
          return a;
      };
      d3.extent = function (array, f) {
          var i = -1, n = array.length, a, b, c;
          if (arguments.length === 1) {
              while (++i < n) if ((b = array[i]) != null && b >= b) {
                  a = c = b;
                  break;
              }
              while (++i < n) if ((b = array[i]) != null) {
                  if (a > b) a = b;
                  if (c < b) c = b;
              }
          } else {
              while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
                  a = c = b;
                  break;
              }
              while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
                  if (a > b) a = b;
                  if (c < b) c = b;
              }
          }
          return [a, c];
      };
      function d3_number(x) {
          return x === null ? NaN : +x;
      }
  
      function d3_numeric(x) {
          return !isNaN(x);
      }
  
      d3.sum = function (array, f) {
          var s = 0, n = array.length, a, i = -1;
          if (arguments.length === 1) {
              while (++i < n) if (d3_numeric(a = +array[i])) s += a;
          } else {
              while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
          }
          return s;
      };
      d3.mean = function (array, f) {
          var s = 0, n = array.length, a, i = -1, j = n;
          if (arguments.length === 1) {
              while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
          } else {
              while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
          }
          if (j) return s / j;
      };
      d3.quantile = function (values, p) {
          var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
          return e ? v + e * (values[h] - v) : v;
      };
      d3.median = function (array, f) {
          var numbers = [], n = array.length, a, i = -1;
          if (arguments.length === 1) {
              while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
          } else {
              while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
          }
          if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
      };
      d3.variance = function (array, f) {
          var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
          if (arguments.length === 1) {
              while (++i < n) {
                  if (d3_numeric(a = d3_number(array[i]))) {
                      d = a - m;
                      m += d / ++j;
                      s += d * (a - m);
                  }
              }
          } else {
              while (++i < n) {
                  if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
                      d = a - m;
                      m += d / ++j;
                      s += d * (a - m);
                  }
              }
          }
          if (j > 1) return s / (j - 1);
      };
      d3.deviation = function () {
          var v = d3.variance.apply(this, arguments);
          return v ? Math.sqrt(v) : v;
      };
      function d3_bisector(compare) {
          return {
              left: function (a, x, lo, hi) {
                  if (arguments.length < 3) lo = 0;
                  if (arguments.length < 4) hi = a.length;
                  while (lo < hi) {
                      var mid = lo + hi >>> 1;
                      if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
                  }
                  return lo;
              },
              right: function (a, x, lo, hi) {
                  if (arguments.length < 3) lo = 0;
                  if (arguments.length < 4) hi = a.length;
                  while (lo < hi) {
                      var mid = lo + hi >>> 1;
                      if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
                  }
                  return lo;
              }
          };
      }
  
      var d3_bisect = d3_bisector(d3_ascending);
      d3.bisectLeft = d3_bisect.left;
      d3.bisect = d3.bisectRight = d3_bisect.right;
      d3.bisector = function (f) {
          return d3_bisector(f.length === 1 ? function (d, x) {
              return d3_ascending(f(d), x);
          } : f);
      };
      d3.shuffle = function (array, i0, i1) {
          if ((m = arguments.length) < 3) {
              i1 = array.length;
              if (m < 2) i0 = 0;
          }
          var m = i1 - i0, t, i;
          while (m) {
              i = Math.random() * m-- | 0;
              t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
          }
          return array;
      };
      d3.permute = function (array, indexes) {
          var i = indexes.length, permutes = new Array(i);
          while (i--) permutes[i] = array[indexes[i]];
          return permutes;
      };
      d3.pairs = function (array) {
          var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
          while (i < n) pairs[i] = [p0 = p1, p1 = array[++i]];
          return pairs;
      };
      d3.zip = function () {
          if (!(n = arguments.length)) return [];
          for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
              for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
                  zip[j] = arguments[j][i];
              }
          }
          return zips;
      };
      function d3_zipLength(d) {
          return d.length;
      }
  
      d3.transpose = function (matrix) {
          return d3.zip.apply(d3, matrix);
      };
      d3.keys = function (map) {
          var keys = [];
          for (var key in map) keys.push(key);
          return keys;
      };
      d3.values = function (map) {
          var values = [];
          for (var key in map) values.push(map[key]);
          return values;
      };
      d3.entries = function (map) {
          var entries = [];
          for (var key in map) entries.push({
              key: key,
              value: map[key]
          });
          return entries;
      };
      d3.merge = function (arrays) {
          var n = arrays.length, m, i = -1, j = 0, merged, array;
          while (++i < n) j += arrays[i].length;
          merged = new Array(j);
          while (--n >= 0) {
              array = arrays[n];
              m = array.length;
              while (--m >= 0) {
                  merged[--j] = array[m];
              }
          }
          return merged;
      };
      var abs = Math.abs;
      d3.range = function (start, stop, step) {
          if (arguments.length < 3) {
              step = 1;
              if (arguments.length < 2) {
                  stop = start;
                  start = 0;
              }
          }
          if ((stop - start) / step === Infinity) throw new Error("infinite range");
          var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
          start *= k, stop *= k, step *= k;
          if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
          return range;
      };
      function d3_range_integerScale(x) {
          var k = 1;
          while (x * k % 1) k *= 10;
          return k;
      }
  
      function d3_class(ctor, properties) {
          for (var key in properties) {
              Object.defineProperty(ctor.prototype, key, {
                  value: properties[key],
                  enumerable: false
              });
          }
      }
  
      d3.map = function (object, f) {
          var map = new d3_Map();
          if (object instanceof d3_Map) {
              object.forEach(function (key, value) {
                  map.set(key, value);
              });
          } else if (Array.isArray(object)) {
              var i = -1, n = object.length, o;
              if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
          } else {
              for (var key in object) map.set(key, object[key]);
          }
          return map;
      };
      function d3_Map() {
          this._ = Object.create(null);
      }
  
      var d3_map_proto = "__proto__", d3_map_zero = "\x00";
      d3_class(d3_Map, {
          has: d3_map_has,
          get: function (key) {
              return this._[d3_map_escape(key)];
          },
          set: function (key, value) {
              return this._[d3_map_escape(key)] = value;
          },
          remove: d3_map_remove,
          keys: d3_map_keys,
          values: function () {
              var values = [];
              for (var key in this._) values.push(this._[key]);
              return values;
          },
          entries: function () {
              var entries = [];
              for (var key in this._) entries.push({
                  key: d3_map_unescape(key),
                  value: this._[key]
              });
              return entries;
          },
          size: d3_map_size,
          empty: d3_map_empty,
          forEach: function (f) {
              for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
          }
      });
      function d3_map_escape(key) {
          return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
      }
  
      function d3_map_unescape(key) {
          return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
      }
  
      function d3_map_has(key) {
          return d3_map_escape(key) in this._;
      }
  
      function d3_map_remove(key) {
          return (key = d3_map_escape(key)) in this._ && delete this._[key];
      }
  
      function d3_map_keys() {
          var keys = [];
          for (var key in this._) keys.push(d3_map_unescape(key));
          return keys;
      }
  
      function d3_map_size() {
          var size = 0;
          for (var key in this._) ++size;
          return size;
      }
  
      function d3_map_empty() {
          for (var key in this._) return false;
          return true;
      }
  
      d3.nest = function () {
          var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
  
          function map(mapType, array, depth) {
              if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
              var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
              while (++i < n) {
                  if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
                      values.push(object);
                  } else {
                      valuesByKey.set(keyValue, [object]);
                  }
              }
              if (mapType) {
                  object = mapType();
                  setter = function (keyValue, values) {
                      object.set(keyValue, map(mapType, values, depth));
                  };
              } else {
                  object = {};
                  setter = function (keyValue, values) {
                      object[keyValue] = map(mapType, values, depth);
                  };
              }
              valuesByKey.forEach(setter);
              return object;
          }
  
          function entries(map, depth) {
              if (depth >= keys.length) return map;
              var array = [], sortKey = sortKeys[depth++];
              map.forEach(function (key, keyMap) {
                  array.push({
                      key: key,
                      values: entries(keyMap, depth)
                  });
              });
              return sortKey ? array.sort(function (a, b) {
                  return sortKey(a.key, b.key);
              }) : array;
          }
  
          nest.map = function (array, mapType) {
              return map(mapType, array, 0);
          };
          nest.entries = function (array) {
              return entries(map(d3.map, array, 0), 0);
          };
          nest.key = function (d) {
              keys.push(d);
              return nest;
          };
          nest.sortKeys = function (order) {
              sortKeys[keys.length - 1] = order;
              return nest;
          };
          nest.sortValues = function (order) {
              sortValues = order;
              return nest;
          };
          nest.rollup = function (f) {
              rollup = f;
              return nest;
          };
          return nest;
      };
      d3.set = function (array) {
          var set = new d3_Set();
          if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
          return set;
      };
      function d3_Set() {
          this._ = Object.create(null);
      }
  
      d3_class(d3_Set, {
          has: d3_map_has,
          add: function (key) {
              this._[d3_map_escape(key += "")] = true;
              return key;
          },
          remove: d3_map_remove,
          values: d3_map_keys,
          size: d3_map_size,
          empty: d3_map_empty,
          forEach: function (f) {
              for (var key in this._) f.call(this, d3_map_unescape(key));
          }
      });
      d3.behavior = {};
      d3.rebind = function (target, source) {
          var i = 1, n = arguments.length, method;
          while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
          return target;
      };
      function d3_rebind(target, source, method) {
          return function () {
              var value = method.apply(source, arguments);
              return value === source ? target : value;
          };
      }
  
      function d3_vendorSymbol(object, name) {
          if (name in object) return name;
          name = name.charAt(0).toUpperCase() + name.slice(1);
          for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
              var prefixName = d3_vendorPrefixes[i] + name;
              if (prefixName in object) return prefixName;
          }
      }
  
      var d3_vendorPrefixes = ["webkit", "ms", "moz", "Moz", "o", "O"];
  
      function d3_noop() {
      }
  
      d3.dispatch = function () {
          var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
          while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
          return dispatch;
      };
      function d3_dispatch() {
      }
  
      d3_dispatch.prototype.on = function (type, listener) {
          var i = type.indexOf("."), name = "";
          if (i >= 0) {
              name = type.slice(i + 1);
              type = type.slice(0, i);
          }
          if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
          if (arguments.length === 2) {
              if (listener == null) for (type in this) {
                  if (this.hasOwnProperty(type)) this[type].on(name, null);
              }
              return this;
          }
      };
      function d3_dispatch_event(dispatch) {
          var listeners = [], listenerByName = new d3_Map();
  
          function event() {
              var z = listeners, i = -1, n = z.length, l;
              while (++i < n) if (l = z[i].on) l.apply(this, arguments);
              return dispatch;
          }
  
          event.on = function (name, listener) {
              var l = listenerByName.get(name), i;
              if (arguments.length < 2) return l && l.on;
              if (l) {
                  l.on = null;
                  listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
                  listenerByName.remove(name);
              }
              if (listener) listeners.push(listenerByName.set(name, {
                  on: listener
              }));
              return dispatch;
          };
          return event;
      }
  
      d3.event = null;
      function d3_eventPreventDefault() {
          d3.event.preventDefault();
      }
  
      function d3_eventSource() {
          var e = d3.event, s;
          while (s = e.sourceEvent) e = s;
          return e;
      }
  
      function d3_eventDispatch(target) {
          var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
          while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
          dispatch.of = function (thiz, argumentz) {
              return function (e1) {
                  try {
                      var e0 = e1.sourceEvent = d3.event;
                      e1.target = target;
                      d3.event = e1;
                      dispatch[e1.type].apply(thiz, argumentz);
                  } finally {
                      d3.event = e0;
                  }
              };
          };
          return dispatch;
      }
  
      d3.requote = function (s) {
          return s.replace(d3_requote_re, "\\$&");
      };
      var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
      var d3_subclass = {}.__proto__ ? function (object, prototype) {
          object.__proto__ = prototype;
      } : function (object, prototype) {
          for (var property in prototype) object[property] = prototype[property];
      };
  
      function d3_selection(groups) {
          d3_subclass(groups, d3_selectionPrototype);
          return groups;
      }
  
      var d3_select = function (s, n) {
          return n.querySelector(s);
      }, d3_selectAll = function (s, n) {
          return n.querySelectorAll(s);
      }, d3_selectMatcher = d3_documentElement.matches || d3_documentElement[d3_vendorSymbol(d3_documentElement, "matchesSelector")], d3_selectMatches = function (n, s) {
          return d3_selectMatcher.call(n, s);
      };
      if (typeof Sizzle === "function") {
          d3_select = function (s, n) {
              return Sizzle(s, n)[0] || null;
          };
          d3_selectAll = Sizzle;
          d3_selectMatches = Sizzle.matchesSelector;
      }
      d3.selection = function () {
          return d3_selectionRoot;
      };
      var d3_selectionPrototype = d3.selection.prototype = [];
      d3_selectionPrototype.select = function (selector) {
          var subgroups = [], subgroup, subnode, group, node;
          selector = d3_selection_selector(selector);
          for (var j = -1, m = this.length; ++j < m;) {
              subgroups.push(subgroup = []);
              subgroup.parentNode = (group = this[j]).parentNode;
              for (var i = -1, n = group.length; ++i < n;) {
                  if (node = group[i]) {
                      subgroup.push(subnode = selector.call(node, node.__data__, i, j));
                      if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
                  } else {
                      subgroup.push(null);
                  }
              }
          }
          return d3_selection(subgroups);
      };
      function d3_selection_selector(selector) {
          return typeof selector === "function" ? selector : function () {
              return d3_select(selector, this);
          };
      }
  
      d3_selectionPrototype.selectAll = function (selector) {
          var subgroups = [], subgroup, node;
          selector = d3_selection_selectorAll(selector);
          for (var j = -1, m = this.length; ++j < m;) {
              for (var group = this[j], i = -1, n = group.length; ++i < n;) {
                  if (node = group[i]) {
                      subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
                      subgroup.parentNode = node;
                  }
              }
          }
          return d3_selection(subgroups);
      };
      function d3_selection_selectorAll(selector) {
          return typeof selector === "function" ? selector : function () {
              return d3_selectAll(selector, this);
          };
      }
  
      var d3_nsPrefix = {
          svg: "http://www.w3.org/2000/svg",
          xhtml: "http://www.w3.org/1999/xhtml",
          xlink: "http://www.w3.org/1999/xlink",
          xml: "http://www.w3.org/XML/1998/namespace",
          xmlns: "http://www.w3.org/2000/xmlns/"
      };
      d3.ns = {
          prefix: d3_nsPrefix,
          qualify: function (name) {
              var i = name.indexOf(":"), prefix = name;
              if (i >= 0) {
                  prefix = name.slice(0, i);
                  name = name.slice(i + 1);
              }
              return d3_nsPrefix.hasOwnProperty(prefix) ? {
                  space: d3_nsPrefix[prefix],
                  local: name
              } : name;
          }
      };
      d3_selectionPrototype.attr = function (name, value) {
          if (arguments.length < 2) {
              if (typeof name === "string") {
                  var node = this.node();
                  name = d3.ns.qualify(name);
                  return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
              }
              for (value in name) this.each(d3_selection_attr(value, name[value]));
              return this;
          }
          return this.each(d3_selection_attr(name, value));
      };
      function d3_selection_attr(name, value) {
          name = d3.ns.qualify(name);
          function attrNull() {
              this.removeAttribute(name);
          }
  
          function attrNullNS() {
              this.removeAttributeNS(name.space, name.local);
          }
  
          function attrConstant() {
              this.setAttribute(name, value);
          }
  
          function attrConstantNS() {
              this.setAttributeNS(name.space, name.local, value);
          }
  
          function attrFunction() {
              var x = value.apply(this, arguments);
              if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
          }
  
          function attrFunctionNS() {
              var x = value.apply(this, arguments);
              if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
          }
  
          return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
      }
  
      function d3_collapse(s) {
          return s.trim().replace(/\s+/g, " ");
      }
  
      d3_selectionPrototype.classed = function (name, value) {
          if (arguments.length < 2) {
              if (typeof name === "string") {
                  var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
                  if (value = node.classList) {
                      while (++i < n) if (!value.contains(name[i])) return false;
                  } else {
                      value = node.getAttribute("class");
                      while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
                  }
                  return true;
              }
              for (value in name) this.each(d3_selection_classed(value, name[value]));
              return this;
          }
          return this.each(d3_selection_classed(name, value));
      };
      function d3_selection_classedRe(name) {
          return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
      }
  
      function d3_selection_classes(name) {
          return (name + "").trim().split(/^|\s+/);
      }
  
      function d3_selection_classed(name, value) {
          name = d3_selection_classes(name).map(d3_selection_classedName);
          var n = name.length;
  
          function classedConstant() {
              var i = -1;
              while (++i < n) name[i](this, value);
          }
  
          function classedFunction() {
              var i = -1, x = value.apply(this, arguments);
              while (++i < n) name[i](this, x);
          }
  
          return typeof value === "function" ? classedFunction : classedConstant;
      }
  
      function d3_selection_classedName(name) {
          var re = d3_selection_classedRe(name);
          return function (node, value) {
              if (c = node.classList) return value ? c.add(name) : c.remove(name);
              var c = node.getAttribute("class") || "";
              if (value) {
                  re.lastIndex = 0;
                  if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
              } else {
                  node.setAttribute("class", d3_collapse(c.replace(re, " ")));
              }
          };
      }
  
      d3_selectionPrototype.style = function (name, value, priority) {
          var n = arguments.length;
          if (n < 3) {
              if (typeof name !== "string") {
                  if (n < 2) value = "";
                  for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
                  return this;
              }
              if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name);
              priority = "";
          }
          return this.each(d3_selection_style(name, value, priority));
      };
      function d3_selection_style(name, value, priority) {
          function styleNull() {
              this.style.removeProperty(name);
          }
  
          function styleConstant() {
              this.style.setProperty(name, value, priority);
          }
  
          function styleFunction() {
              var x = value.apply(this, arguments);
              if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
          }
  
          return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
      }
  
      d3_selectionPrototype.property = function (name, value) {
          if (arguments.length < 2) {
              if (typeof name === "string") return this.node()[name];
              for (value in name) this.each(d3_selection_property(value, name[value]));
              return this;
          }
          return this.each(d3_selection_property(name, value));
      };
      function d3_selection_property(name, value) {
          function propertyNull() {
              delete this[name];
          }
  
          function propertyConstant() {
              this[name] = value;
          }
  
          function propertyFunction() {
              var x = value.apply(this, arguments);
              if (x == null) delete this[name]; else this[name] = x;
          }
  
          return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
      }
  
      d3_selectionPrototype.text = function (value) {
          return arguments.length ? this.each(typeof value === "function" ? function () {
              var v = value.apply(this, arguments);
              this.textContent = v == null ? "" : v;
          } : value == null ? function () {
              this.textContent = "";
          } : function () {
              this.textContent = value;
          }) : this.node().textContent;
      };
      d3_selectionPrototype.html = function (value) {
          return arguments.length ? this.each(typeof value === "function" ? function () {
              var v = value.apply(this, arguments);
              this.innerHTML = v == null ? "" : v;
          } : value == null ? function () {
              this.innerHTML = "";
          } : function () {
              this.innerHTML = value;
          }) : this.node().innerHTML;
      };
      d3_selectionPrototype.append = function (name) {
          name = d3_selection_creator(name);
          return this.select(function () {
              return this.appendChild(name.apply(this, arguments));
          });
      };
      function d3_selection_creator(name) {
          return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? function () {
              return this.ownerDocument.createElementNS(name.space, name.local);
          } : function () {
              return this.ownerDocument.createElementNS(this.namespaceURI, name);
          };
      }
  
      d3_selectionPrototype.insert = function (name, before) {
          name = d3_selection_creator(name);
          before = d3_selection_selector(before);
          return this.select(function () {
              return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
          });
      };
      d3_selectionPrototype.remove = function () {
          return this.each(d3_selectionRemove);
      };
      function d3_selectionRemove() {
          var parent = this.parentNode;
          if (parent) parent.removeChild(this);
      }
  
      d3_selectionPrototype.data = function (value, key) {
          var i = -1, n = this.length, group, node;
          if (!arguments.length) {
              value = new Array(n = (group = this[0]).length);
              while (++i < n) {
                  if (node = group[i]) {
                      value[i] = node.__data__;
                  }
              }
              return value;
          }
          function bind(group, groupData) {
              var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
              if (key) {
                  var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
                  for (i = -1; ++i < n;) {
                      if (nodeByKeyValue.has(keyValue = key.call(node = group[i], node.__data__, i))) {
                          exitNodes[i] = node;
                      } else {
                          nodeByKeyValue.set(keyValue, node);
                      }
                      keyValues[i] = keyValue;
                  }
                  for (i = -1; ++i < m;) {
                      if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
                          enterNodes[i] = d3_selection_dataNode(nodeData);
                      } else if (node !== true) {
                          updateNodes[i] = node;
                          node.__data__ = nodeData;
                      }
                      nodeByKeyValue.set(keyValue, true);
                  }
                  for (i = -1; ++i < n;) {
                      if (nodeByKeyValue.get(keyValues[i]) !== true) {
                          exitNodes[i] = group[i];
                      }
                  }
              } else {
                  for (i = -1; ++i < n0;) {
                      node = group[i];
                      nodeData = groupData[i];
                      if (node) {
                          node.__data__ = nodeData;
                          updateNodes[i] = node;
                      } else {
                          enterNodes[i] = d3_selection_dataNode(nodeData);
                      }
                  }
                  for (; i < m; ++i) {
                      enterNodes[i] = d3_selection_dataNode(groupData[i]);
                  }
                  for (; i < n; ++i) {
                      exitNodes[i] = group[i];
                  }
              }
              enterNodes.update = updateNodes;
              enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
              enter.push(enterNodes);
              update.push(updateNodes);
              exit.push(exitNodes);
          }
  
          var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
          if (typeof value === "function") {
              while (++i < n) {
                  bind(group = this[i], value.call(group, group.parentNode.__data__, i));
              }
          } else {
              while (++i < n) {
                  bind(group = this[i], value);
              }
          }
          update.enter = function () {
              return enter;
          };
          update.exit = function () {
              return exit;
          };
          return update;
      };
      function d3_selection_dataNode(data) {
          return {
              __data__: data
          };
      }
  
      d3_selectionPrototype.datum = function (value) {
          return arguments.length ? this.property("__data__", value) : this.property("__data__");
      };
      d3_selectionPrototype.filter = function (filter) {
          var subgroups = [], subgroup, group, node;
          if (typeof filter !== "function") filter = d3_selection_filter(filter);
          for (var j = 0, m = this.length; j < m; j++) {
              subgroups.push(subgroup = []);
              subgroup.parentNode = (group = this[j]).parentNode;
              for (var i = 0, n = group.length; i < n; i++) {
                  if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
                      subgroup.push(node);
                  }
              }
          }
          return d3_selection(subgroups);
      };
      function d3_selection_filter(selector) {
          return function () {
              return d3_selectMatches(this, selector);
          };
      }
  
      d3_selectionPrototype.order = function () {
          for (var j = -1, m = this.length; ++j < m;) {
              for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
                  if (node = group[i]) {
                      if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
                      next = node;
                  }
              }
          }
          return this;
      };
      d3_selectionPrototype.sort = function (comparator) {
          comparator = d3_selection_sortComparator.apply(this, arguments);
          for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator);
          return this.order();
      };
      function d3_selection_sortComparator(comparator) {
          if (!arguments.length) comparator = d3_ascending;
          return function (a, b) {
              return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
          };
      }
  
      d3_selectionPrototype.each = function (callback) {
          return d3_selection_each(this, function (node, i, j) {
              callback.call(node, node.__data__, i, j);
          });
      };
      function d3_selection_each(groups, callback) {
          for (var j = 0, m = groups.length; j < m; j++) {
              for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
                  if (node = group[i]) callback(node, i, j);
              }
          }
          return groups;
      }
  
      d3_selectionPrototype.call = function (callback) {
          var args = d3_array(arguments);
          callback.apply(args[0] = this, args);
          return this;
      };
      d3_selectionPrototype.empty = function () {
          return !this.node();
      };
      d3_selectionPrototype.node = function () {
          for (var j = 0, m = this.length; j < m; j++) {
              for (var group = this[j], i = 0, n = group.length; i < n; i++) {
                  var node = group[i];
                  if (node) return node;
              }
          }
          return null;
      };
      d3_selectionPrototype.size = function () {
          var n = 0;
          d3_selection_each(this, function () {
              ++n;
          });
          return n;
      };
      function d3_selection_enter(selection) {
          d3_subclass(selection, d3_selection_enterPrototype);
          return selection;
      }
  
      var d3_selection_enterPrototype = [];
      d3.selection.enter = d3_selection_enter;
      d3.selection.enter.prototype = d3_selection_enterPrototype;
      d3_selection_enterPrototype.append = d3_selectionPrototype.append;
      d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
      d3_selection_enterPrototype.node = d3_selectionPrototype.node;
      d3_selection_enterPrototype.call = d3_selectionPrototype.call;
      d3_selection_enterPrototype.size = d3_selectionPrototype.size;
      d3_selection_enterPrototype.select = function (selector) {
          var subgroups = [], subgroup, subnode, upgroup, group, node;
          for (var j = -1, m = this.length; ++j < m;) {
              upgroup = (group = this[j]).update;
              subgroups.push(subgroup = []);
              subgroup.parentNode = group.parentNode;
              for (var i = -1, n = group.length; ++i < n;) {
                  if (node = group[i]) {
                      subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
                      subnode.__data__ = node.__data__;
                  } else {
                      subgroup.push(null);
                  }
              }
          }
          return d3_selection(subgroups);
      };
      d3_selection_enterPrototype.insert = function (name, before) {
          if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
          return d3_selectionPrototype.insert.call(this, name, before);
      };
      function d3_selection_enterInsertBefore(enter) {
          var i0, j0;
          return function (d, i, j) {
              var group = enter[j].update, n = group.length, node;
              if (j != j0) j0 = j, i0 = 0;
              if (i >= i0) i0 = i + 1;
              while (!(node = group[i0]) && ++i0 < n) ;
              return node;
          };
      }
  
      d3.select = function (node) {
          var group = [typeof node === "string" ? d3_select(node, d3_document) : node];
          group.parentNode = d3_documentElement;
          return d3_selection([group]);
      };
      d3.selectAll = function (nodes) {
          var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes);
          group.parentNode = d3_documentElement;
          return d3_selection([group]);
      };
      var d3_selectionRoot = d3.select(d3_documentElement);
      d3_selectionPrototype.on = function (type, listener, capture) {
          var n = arguments.length;
          if (n < 3) {
              if (typeof type !== "string") {
                  if (n < 2) listener = false;
                  for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
                  return this;
              }
              if (n < 2) return (n = this.node()["__on" + type]) && n._;
              capture = false;
          }
          return this.each(d3_selection_on(type, listener, capture));
      };
      function d3_selection_on(type, listener, capture) {
          var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
          if (i > 0) type = type.slice(0, i);
          var filter = d3_selection_onFilters.get(type);
          if (filter) type = filter, wrap = d3_selection_onFilter;
          function onRemove() {
              var l = this[name];
              if (l) {
                  this.removeEventListener(type, l, l.$);
                  delete this[name];
              }
          }
  
          function onAdd() {
              var l = wrap(listener, d3_array(arguments));
              onRemove.call(this);
              this.addEventListener(type, this[name] = l, l.$ = capture);
              l._ = listener;
          }
  
          function removeAll() {
              var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
              for (var name in this) {
                  if (match = name.match(re)) {
                      var l = this[name];
                      this.removeEventListener(match[1], l, l.$);
                      delete this[name];
                  }
              }
          }
  
          return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
      }
  
      var d3_selection_onFilters = d3.map({
          mouseenter: "mouseover",
          mouseleave: "mouseout"
      });
      d3_selection_onFilters.forEach(function (k) {
          if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
      });
      function d3_selection_onListener(listener, argumentz) {
          return function (e) {
              var o = d3.event;
              d3.event = e;
              argumentz[0] = this.__data__;
              try {
                  listener.apply(this, argumentz);
              } finally {
                  d3.event = o;
              }
          };
      }
  
      function d3_selection_onFilter(listener, argumentz) {
          var l = d3_selection_onListener(listener, argumentz);
          return function (e) {
              var target = this, related = e.relatedTarget;
              if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
                  l.call(target, e);
              }
          };
      }
  
      var d3_event_dragSelect = "onselectstart" in d3_document ? null : d3_vendorSymbol(d3_documentElement.style, "userSelect"), d3_event_dragId = 0;
  
      function d3_event_dragSuppress() {
          var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
          if (d3_event_dragSelect) {
              var style = d3_documentElement.style, select = style[d3_event_dragSelect];
              style[d3_event_dragSelect] = "none";
          }
          return function (suppressClick) {
              w.on(name, null);
              if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
              if (suppressClick) {
                  var off = function () {
                      w.on(click, null);
                  };
                  w.on(click, function () {
                      d3_eventPreventDefault();
                      off();
                  }, true);
                  setTimeout(off, 0);
              }
          };
      }
  
      d3.mouse = function (container) {
          return d3_mousePoint(container, d3_eventSource());
      };
      var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0;
  
      function d3_mousePoint(container, e) {
          if (e.changedTouches) e = e.changedTouches[0];
          var svg = container.ownerSVGElement || container;
          if (svg.createSVGPoint) {
              var point = svg.createSVGPoint();
              if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) {
                  svg = d3.select("body").append("svg").style({
                      position: "absolute",
                      top: 0,
                      left: 0,
                      margin: 0,
                      padding: 0,
                      border: "none"
                  }, "important");
                  var ctm = svg[0][0].getScreenCTM();
                  d3_mouse_bug44083 = !(ctm.f || ctm.e);
                  svg.remove();
              }
              if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX,
                  point.y = e.clientY;
              point = point.matrixTransform(container.getScreenCTM().inverse());
              return [point.x, point.y];
          }
          var rect = container.getBoundingClientRect();
          return [e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop];
      }
  
      d3.touch = function (container, touches, identifier) {
          if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
          if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
              if ((touch = touches[i]).identifier === identifier) {
                  return d3_mousePoint(container, touch);
              }
          }
      };
      d3.behavior.drag = function () {
          var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_behavior_dragMouseSubject, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_behavior_dragTouchSubject, "touchmove", "touchend");
  
          function drag() {
              this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
          }
  
          function dragstart(id, position, subject, move, end) {
              return function () {
                  var that = this, target = d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject()).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(), position0 = position(parent, dragId);
                  if (origin) {
                      dragOffset = origin.apply(that, arguments);
                      dragOffset = [dragOffset.x - position0[0], dragOffset.y - position0[1]];
                  } else {
                      dragOffset = [0, 0];
                  }
                  dispatch({
                      type: "dragstart"
                  });
                  function moved() {
                      var position1 = position(parent, dragId), dx, dy;
                      if (!position1) return;
                      dx = position1[0] - position0[0];
                      dy = position1[1] - position0[1];
                      dragged |= dx | dy;
                      position0 = position1;
                      dispatch({
                          type: "drag",
                          x: position1[0] + dragOffset[0],
                          y: position1[1] + dragOffset[1],
                          dx: dx,
                          dy: dy
                      });
                  }
  
                  function ended() {
                      if (!position(parent, dragId)) return;
                      dragSubject.on(move + dragName, null).on(end + dragName, null);
                      dragRestore(dragged && d3.event.target === target);
                      dispatch({
                          type: "dragend"
                      });
                  }
              };
          }
  
          drag.origin = function (x) {
              if (!arguments.length) return origin;
              origin = x;
              return drag;
          };
          return d3.rebind(drag, event, "on");
      };
      function d3_behavior_dragTouchId() {
          return d3.event.changedTouches[0].identifier;
      }
  
      function d3_behavior_dragTouchSubject() {
          return d3.event.target;
      }
  
      function d3_behavior_dragMouseSubject() {
          return d3_window;
      }
  
      d3.touches = function (container, touches) {
          if (arguments.length < 2) touches = d3_eventSource().touches;
          return touches ? d3_array(touches).map(function (touch) {
              var point = d3_mousePoint(container, touch);
              point.identifier = touch.identifier;
              return point;
          }) : [];
      };
      var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  
      function d3_sgn(x) {
          return x > 0 ? 1 : x < 0 ? -1 : 0;
      }
  
      function d3_cross2d(a, b, c) {
          return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
      }
  
      function d3_acos(x) {
          return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
      }
  
      function d3_asin(x) {
          return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
      }
  
      function d3_sinh(x) {
          return ((x = Math.exp(x)) - 1 / x) / 2;
      }
  
      function d3_cosh(x) {
          return ((x = Math.exp(x)) + 1 / x) / 2;
      }
  
      function d3_tanh(x) {
          return ((x = Math.exp(2 * x)) - 1) / (x + 1);
      }
  
      function d3_haversin(x) {
          return (x = Math.sin(x / 2)) * x;
      }
  
      var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
      d3.interpolateZoom = function (p0, p1) {
          var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2];
          var dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), dr = r1 - r0, S = (dr || Math.log(w1 / w0)) / ρ;
  
          function interpolate(t) {
              var s = t * S;
              if (dr) {
                  var coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
                  return [ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0)];
              }
              return [ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * s)];
          }
  
          interpolate.duration = S * 1e3;
          return interpolate;
      };
      d3.behavior.zoom = function () {
          var view = {
              x: 0,
              y: 0,
              k: 1
          }, translate0, center0, center, size = [960, 500], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
  
          function zoom(g) {
              g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
          }
  
          zoom.event = function (g) {
              g.each(function () {
                  var dispatch = event.of(this, arguments), view1 = view;
                  if (d3_transitionInheritId) {
                      d3.select(this).transition().each("start.zoom", function () {
                          view = this.__chart__ || {
                              x: 0,
                              y: 0,
                              k: 1
                          };
                          zoomstarted(dispatch);
                      }).tween("zoom:zoom", function () {
                          var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([(cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k], [(cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k]);
                          return function (t) {
                              var l = i(t), k = dx / l[2];
                              this.__chart__ = view = {
                                  x: cx - l[0] * k,
                                  y: cy - l[1] * k,
                                  k: k
                              };
                              zoomed(dispatch);
                          };
                      }).each("interrupt.zoom", function () {
                          zoomended(dispatch);
                      }).each("end.zoom", function () {
                          zoomended(dispatch);
                      });
                  } else {
                      this.__chart__ = view;
                      zoomstarted(dispatch);
                      zoomed(dispatch);
                      zoomended(dispatch);
                  }
              });
          };
          zoom.translate = function (_) {
              if (!arguments.length) return [view.x, view.y];
              view = {
                  x: +_[0],
                  y: +_[1],
                  k: view.k
              };
              rescale();
              return zoom;
          };
          zoom.scale = function (_) {
              if (!arguments.length) return view.k;
              view = {
                  x: view.x,
                  y: view.y,
                  k: +_
              };
              rescale();
              return zoom;
          };
          zoom.scaleExtent = function (_) {
              if (!arguments.length) return scaleExtent;
              scaleExtent = _ == null ? d3_behavior_zoomInfinity : [+_[0], +_[1]];
              return zoom;
          };
          zoom.center = function (_) {
              if (!arguments.length) return center;
              center = _ && [+_[0], +_[1]];
              return zoom;
          };
          zoom.size = function (_) {
              if (!arguments.length) return size;
              size = _ && [+_[0], +_[1]];
              return zoom;
          };
          zoom.duration = function (_) {
              if (!arguments.length) return duration;
              duration = +_;
              return zoom;
          };
          zoom.x = function (z) {
              if (!arguments.length) return x1;
              x1 = z;
              x0 = z.copy();
              view = {
                  x: 0,
                  y: 0,
                  k: 1
              };
              return zoom;
          };
          zoom.y = function (z) {
              if (!arguments.length) return y1;
              y1 = z;
              y0 = z.copy();
              view = {
                  x: 0,
                  y: 0,
                  k: 1
              };
              return zoom;
          };
          function location(p) {
              return [(p[0] - view.x) / view.k, (p[1] - view.y) / view.k];
          }
  
          function point(l) {
              return [l[0] * view.k + view.x, l[1] * view.k + view.y];
          }
  
          function scaleTo(s) {
              view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
          }
  
          function translateTo(p, l) {
              l = point(l);
              view.x += p[0] - l[0];
              view.y += p[1] - l[1];
          }
  
          function zoomTo(that, p, l, k) {
              that.__chart__ = {
                  x: view.x,
                  y: view.y,
                  k: view.k
              };
              scaleTo(Math.pow(2, k));
              translateTo(center0 = p, l);
              that = d3.select(that);
              if (duration > 0) that = that.transition().duration(duration);
              that.call(zoom.event);
          }
  
          function rescale() {
              if (x1) x1.domain(x0.range().map(function (x) {
                  return (x - view.x) / view.k;
              }).map(x0.invert));
              if (y1) y1.domain(y0.range().map(function (y) {
                  return (y - view.y) / view.k;
              }).map(y0.invert));
          }
  
          function zoomstarted(dispatch) {
              if (!zooming++) dispatch({
                  type: "zoomstart"
              });
          }
  
          function zoomed(dispatch) {
              rescale();
              dispatch({
                  type: "zoom",
                  scale: view.k,
                  translate: [view.x, view.y]
              });
          }
  
          function zoomended(dispatch) {
              if (!--zooming) dispatch({
                  type: "zoomend"
              });
              center0 = null;
          }
  
          function mousedowned() {
              var that = this, target = d3.event.target, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress();
              d3_selection_interrupt.call(that);
              zoomstarted(dispatch);
              function moved() {
                  dragged = 1;
                  translateTo(d3.mouse(that), location0);
                  zoomed(dispatch);
              }
  
              function ended() {
                  subject.on(mousemove, null).on(mouseup, null);
                  dragRestore(dragged && d3.event.target === target);
                  zoomended(dispatch);
              }
          }
  
          function touchstarted() {
              var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress();
              started();
              zoomstarted(dispatch);
              subject.on(mousedown, null).on(touchstart, started);
              function relocate() {
                  var touches = d3.touches(that);
                  scale0 = view.k;
                  touches.forEach(function (t) {
                      if (t.identifier in locations0) locations0[t.identifier] = location(t);
                  });
                  return touches;
              }
  
              function started() {
                  var target = d3.event.target;
                  d3.select(target).on(touchmove, moved).on(touchend, ended);
                  targets.push(target);
                  var changed = d3.event.changedTouches;
                  for (var i = 0, n = changed.length; i < n; ++i) {
                      locations0[changed[i].identifier] = null;
                  }
                  var touches = relocate(), now = Date.now();
                  if (touches.length === 1) {
                      if (now - touchtime < 500) {
                          var p = touches[0];
                          zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
                          d3_eventPreventDefault();
                      }
                      touchtime = now;
                  } else if (touches.length > 1) {
                      var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
                      distance0 = dx * dx + dy * dy;
                  }
              }
  
              function moved() {
                  var touches = d3.touches(that), p0, l0, p1, l1;
                  d3_selection_interrupt.call(that);
                  for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
                      p1 = touches[i];
                      if (l1 = locations0[p1.identifier]) {
                          if (l0) break;
                          p0 = p1, l0 = l1;
                      }
                  }
                  if (l1) {
                      var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
                      p0 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
                      l0 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
                      scaleTo(scale1 * scale0);
                  }
                  touchtime = null;
                  translateTo(p0, l0);
                  zoomed(dispatch);
              }
  
              function ended() {
                  if (d3.event.touches.length) {
                      var changed = d3.event.changedTouches;
                      for (var i = 0, n = changed.length; i < n; ++i) {
                          delete locations0[changed[i].identifier];
                      }
                      for (var identifier in locations0) {
                          return void relocate();
                      }
                  }
                  d3.selectAll(targets).on(zoomName, null);
                  subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
                  dragRestore();
                  zoomended(dispatch);
              }
          }
  
          function mousewheeled() {
              var dispatch = event.of(this, arguments);
              if (mousewheelTimer) clearTimeout(mousewheelTimer); else translate0 = location(center0 = center || d3.mouse(this)),
                  d3_selection_interrupt.call(this), zoomstarted(dispatch);
              mousewheelTimer = setTimeout(function () {
                  mousewheelTimer = null;
                  zoomended(dispatch);
              }, 50);
              d3_eventPreventDefault();
              scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
              translateTo(center0, translate0);
              zoomed(dispatch);
          }
  
          function dblclicked() {
              var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
              zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
          }
  
          return d3.rebind(zoom, event, "on");
      };
      var d3_behavior_zoomInfinity = [0, Infinity];
      var d3_behavior_zoomDelta, d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function () {
          return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function () {
          return d3.event.wheelDelta;
      }, "mousewheel") : (d3_behavior_zoomDelta = function () {
          return -d3.event.detail;
      }, "MozMousePixelScroll");
      d3.color = d3_color;
      function d3_color() {
      }
  
      d3_color.prototype.toString = function () {
          return this.rgb() + "";
      };
      d3.hsl = d3_hsl;
      function d3_hsl(h, s, l) {
          return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
      }
  
      var d3_hslPrototype = d3_hsl.prototype = new d3_color();
      d3_hslPrototype.brighter = function (k) {
          k = Math.pow(.7, arguments.length ? k : 1);
          return new d3_hsl(this.h, this.s, this.l / k);
      };
      d3_hslPrototype.darker = function (k) {
          k = Math.pow(.7, arguments.length ? k : 1);
          return new d3_hsl(this.h, this.s, k * this.l);
      };
      d3_hslPrototype.rgb = function () {
          return d3_hsl_rgb(this.h, this.s, this.l);
      };
      function d3_hsl_rgb(h, s, l) {
          var m1, m2;
          h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
          s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
          l = l < 0 ? 0 : l > 1 ? 1 : l;
          m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
          m1 = 2 * l - m2;
          function v(h) {
              if (h > 360) h -= 360; else if (h < 0) h += 360;
              if (h < 60) return m1 + (m2 - m1) * h / 60;
              if (h < 180) return m2;
              if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
              return m1;
          }
  
          function vv(h) {
              return Math.round(v(h) * 255);
          }
  
          return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
      }
  
      d3.hcl = d3_hcl;
      function d3_hcl(h, c, l) {
          return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
      }
  
      var d3_hclPrototype = d3_hcl.prototype = new d3_color();
      d3_hclPrototype.brighter = function (k) {
          return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
      };
      d3_hclPrototype.darker = function (k) {
          return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
      };
      d3_hclPrototype.rgb = function () {
          return d3_hcl_lab(this.h, this.c, this.l).rgb();
      };
      function d3_hcl_lab(h, c, l) {
          if (isNaN(h)) h = 0;
          if (isNaN(c)) c = 0;
          return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
      }
  
      d3.lab = d3_lab;
      function d3_lab(l, a, b) {
          return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
      }
  
      var d3_lab_K = 18;
      var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
      var d3_labPrototype = d3_lab.prototype = new d3_color();
      d3_labPrototype.brighter = function (k) {
          return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
      };
      d3_labPrototype.darker = function (k) {
          return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
      };
      d3_labPrototype.rgb = function () {
          return d3_lab_rgb(this.l, this.a, this.b);
      };
      function d3_lab_rgb(l, a, b) {
          var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
          x = d3_lab_xyz(x) * d3_lab_X;
          y = d3_lab_xyz(y) * d3_lab_Y;
          z = d3_lab_xyz(z) * d3_lab_Z;
          return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
      }
  
      function d3_lab_hcl(l, a, b) {
          return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
      }
  
      function d3_lab_xyz(x) {
          return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
      }
  
      function d3_xyz_lab(x) {
          return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
      }
  
      function d3_xyz_rgb(r) {
          return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
      }
  
      d3.rgb = d3_rgb;
      function d3_rgb(r, g, b) {
          return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
      }
  
      function d3_rgbNumber(value) {
          return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
      }
  
      function d3_rgbString(value) {
          return d3_rgbNumber(value) + "";
      }
  
      var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
      d3_rgbPrototype.brighter = function (k) {
          k = Math.pow(.7, arguments.length ? k : 1);
          var r = this.r, g = this.g, b = this.b, i = 30;
          if (!r && !g && !b) return new d3_rgb(i, i, i);
          if (r && r < i) r = i;
          if (g && g < i) g = i;
          if (b && b < i) b = i;
          return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
      };
      d3_rgbPrototype.darker = function (k) {
          k = Math.pow(.7, arguments.length ? k : 1);
          return new d3_rgb(k * this.r, k * this.g, k * this.b);
      };
      d3_rgbPrototype.hsl = function () {
          return d3_rgb_hsl(this.r, this.g, this.b);
      };
      d3_rgbPrototype.toString = function () {
          return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
      };
      function d3_rgb_hex(v) {
          return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
      }
  
      function d3_rgb_parse(format, rgb, hsl) {
          var r = 0, g = 0, b = 0, m1, m2, color;
          m1 = /([a-z]+)\((.*)\)/i.exec(format);
          if (m1) {
              m2 = m1[2].split(",");
              switch (m1[1]) {
                  case "hsl":
                  {
                      return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
                  }
  
                  case "rgb":
                  {
                      return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
                  }
              }
          }
          if (color = d3_rgb_names.get(format)) return rgb(color.r, color.g, color.b);
          if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
              if (format.length === 4) {
                  r = (color & 3840) >> 4;
                  r = r >> 4 | r;
                  g = color & 240;
                  g = g >> 4 | g;
                  b = color & 15;
                  b = b << 4 | b;
              } else if (format.length === 7) {
                  r = (color & 16711680) >> 16;
                  g = (color & 65280) >> 8;
                  b = color & 255;
              }
          }
          return rgb(r, g, b);
      }
  
      function d3_rgb_hsl(r, g, b) {
          var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
          if (d) {
              s = l < .5 ? d / (max + min) : d / (2 - max - min);
              if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
              h *= 60;
          } else {
              h = NaN;
              s = l > 0 && l < 1 ? 0 : h;
          }
          return new d3_hsl(h, s, l);
      }
  
      function d3_rgb_lab(r, g, b) {
          r = d3_rgb_xyz(r);
          g = d3_rgb_xyz(g);
          b = d3_rgb_xyz(b);
          var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
          return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
      }
  
      function d3_rgb_xyz(r) {
          return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
      }
  
      function d3_rgb_parseNumber(c) {
          var f = parseFloat(c);
          return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
      }
  
      var d3_rgb_names = d3.map({
          aliceblue: 15792383,
          antiquewhite: 16444375,
          aqua: 65535,
          aquamarine: 8388564,
          azure: 15794175,
          beige: 16119260,
          bisque: 16770244,
          black: 0,
          blanchedalmond: 16772045,
          blue: 255,
          blueviolet: 9055202,
          brown: 10824234,
          burlywood: 14596231,
          cadetblue: 6266528,
          chartreuse: 8388352,
          chocolate: 13789470,
          coral: 16744272,
          cornflowerblue: 6591981,
          cornsilk: 16775388,
          crimson: 14423100,
          cyan: 65535,
          darkblue: 139,
          darkcyan: 35723,
          darkgoldenrod: 12092939,
          darkgray: 11119017,
          darkgreen: 25600,
          darkgrey: 11119017,
          darkkhaki: 12433259,
          darkmagenta: 9109643,
          darkolivegreen: 5597999,
          darkorange: 16747520,
          darkorchid: 10040012,
          darkred: 9109504,
          darksalmon: 15308410,
          darkseagreen: 9419919,
          darkslateblue: 4734347,
          darkslategray: 3100495,
          darkslategrey: 3100495,
          darkturquoise: 52945,
          darkviolet: 9699539,
          deeppink: 16716947,
          deepskyblue: 49151,
          dimgray: 6908265,
          dimgrey: 6908265,
          dodgerblue: 2003199,
          firebrick: 11674146,
          floralwhite: 16775920,
          forestgreen: 2263842,
          fuchsia: 16711935,
          gainsboro: 14474460,
          ghostwhite: 16316671,
          gold: 16766720,
          goldenrod: 14329120,
          gray: 8421504,
          green: 32768,
          greenyellow: 11403055,
          grey: 8421504,
          honeydew: 15794160,
          hotpink: 16738740,
          indianred: 13458524,
          indigo: 4915330,
          ivory: 16777200,
          khaki: 15787660,
          lavender: 15132410,
          lavenderblush: 16773365,
          lawngreen: 8190976,
          lemonchiffon: 16775885,
          lightblue: 11393254,
          lightcoral: 15761536,
          lightcyan: 14745599,
          lightgoldenrodyellow: 16448210,
          lightgray: 13882323,
          lightgreen: 9498256,
          lightgrey: 13882323,
          lightpink: 16758465,
          lightsalmon: 16752762,
          lightseagreen: 2142890,
          lightskyblue: 8900346,
          lightslategray: 7833753,
          lightslategrey: 7833753,
          lightsteelblue: 11584734,
          lightyellow: 16777184,
          lime: 65280,
          limegreen: 3329330,
          linen: 16445670,
          magenta: 16711935,
          maroon: 8388608,
          mediumaquamarine: 6737322,
          mediumblue: 205,
          mediumorchid: 12211667,
          mediumpurple: 9662683,
          mediumseagreen: 3978097,
          mediumslateblue: 8087790,
          mediumspringgreen: 64154,
          mediumturquoise: 4772300,
          mediumvioletred: 13047173,
          midnightblue: 1644912,
          mintcream: 16121850,
          mistyrose: 16770273,
          moccasin: 16770229,
          navajowhite: 16768685,
          navy: 128,
          oldlace: 16643558,
          olive: 8421376,
          olivedrab: 7048739,
          orange: 16753920,
          orangered: 16729344,
          orchid: 14315734,
          palegoldenrod: 15657130,
          palegreen: 10025880,
          paleturquoise: 11529966,
          palevioletred: 14381203,
          papayawhip: 16773077,
          peachpuff: 16767673,
          peru: 13468991,
          pink: 16761035,
          plum: 14524637,
          powderblue: 11591910,
          purple: 8388736,
          red: 16711680,
          rosybrown: 12357519,
          royalblue: 4286945,
          saddlebrown: 9127187,
          salmon: 16416882,
          sandybrown: 16032864,
          seagreen: 3050327,
          seashell: 16774638,
          sienna: 10506797,
          silver: 12632256,
          skyblue: 8900331,
          slateblue: 6970061,
          slategray: 7372944,
          slategrey: 7372944,
          snow: 16775930,
          springgreen: 65407,
          steelblue: 4620980,
          tan: 13808780,
          teal: 32896,
          thistle: 14204888,
          tomato: 16737095,
          turquoise: 4251856,
          violet: 15631086,
          wheat: 16113331,
          white: 16777215,
          whitesmoke: 16119285,
          yellow: 16776960,
          yellowgreen: 10145074
      });
      d3_rgb_names.forEach(function (key, value) {
          d3_rgb_names.set(key, d3_rgbNumber(value));
      });
      function d3_functor(v) {
          return typeof v === "function" ? v : function () {
              return v;
          };
      }
  
      d3.functor = d3_functor;
      function d3_identity(d) {
          return d;
      }
  
      d3.xhr = d3_xhrType(d3_identity);
      function d3_xhrType(response) {
          return function (url, mimeType, callback) {
              if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType,
                  mimeType = null;
              return d3_xhr(url, mimeType, response, callback);
          };
      }
  
      function d3_xhr(url, mimeType, response, callback) {
          var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
          if (d3_window.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
          "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function () {
              request.readyState > 3 && respond();
          };
          function respond() {
              var status = request.status, result;
              if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
                  try {
                      result = response.call(xhr, request);
                  } catch (e) {
                      dispatch.error.call(xhr, e);
                      return;
                  }
                  dispatch.load.call(xhr, result);
              } else {
                  dispatch.error.call(xhr, request);
              }
          }
  
          request.onprogress = function (event) {
              var o = d3.event;
              d3.event = event;
              try {
                  dispatch.progress.call(xhr, request);
              } finally {
                  d3.event = o;
              }
          };
          xhr.header = function (name, value) {
              name = (name + "").toLowerCase();
              if (arguments.length < 2) return headers[name];
              if (value == null) delete headers[name]; else headers[name] = value + "";
              return xhr;
          };
          xhr.mimeType = function (value) {
              if (!arguments.length) return mimeType;
              mimeType = value == null ? null : value + "";
              return xhr;
          };
          xhr.responseType = function (value) {
              if (!arguments.length) return responseType;
              responseType = value;
              return xhr;
          };
          xhr.response = function (value) {
              response = value;
              return xhr;
          };
          ["get", "post"].forEach(function (method) {
              xhr[method] = function () {
                  return xhr.send.apply(xhr, [method].concat(d3_array(arguments)));
              };
          });
          xhr.send = function (method, data, callback) {
              if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
              request.open(method, url, true);
              if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
              if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
              if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
              if (responseType != null) request.responseType = responseType;
              if (callback != null) xhr.on("error", callback).on("load", function (request) {
                  callback(null, request);
              });
              dispatch.beforesend.call(xhr, request);
              request.send(data == null ? null : data);
              return xhr;
          };
          xhr.abort = function () {
              request.abort();
              return xhr;
          };
          d3.rebind(xhr, dispatch, "on");
          return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
      }
  
      function d3_xhr_fixCallback(callback) {
          return callback.length === 1 ? function (error, request) {
              callback(error == null ? request : null);
          } : callback;
      }
  
      function d3_xhrHasResponse(request) {
          var type = request.responseType;
          return type && type !== "text" ? request.response : request.responseText;
      }
  
      d3.dsv = function (delimiter, mimeType) {
          var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
  
          function dsv(url, row, callback) {
              if (arguments.length < 3) callback = row, row = null;
              var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
              xhr.row = function (_) {
                  return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
              };
              return xhr;
          }
  
          function response(request) {
              return dsv.parse(request.responseText);
          }
  
          function typedResponse(f) {
              return function (request) {
                  return dsv.parse(request.responseText, f);
              };
          }
  
          dsv.parse = function (text, f) {
              var o;
              return dsv.parseRows(text, function (row, i) {
                  if (o) return o(row, i - 1);
                  var a = new Function("d", "return {" + row.map(function (name, i) {
                      return JSON.stringify(name) + ": d[" + i + "]";
                  }).join(",") + "}");
                  o = f ? function (row, i) {
                      return f(a(row), i);
                  } : a;
              });
          };
          dsv.parseRows = function (text, f) {
              var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
  
              function token() {
                  if (I >= N) return EOF;
                  if (eol) return eol = false, EOL;
                  var j = I;
                  if (text.charCodeAt(j) === 34) {
                      var i = j;
                      while (i++ < N) {
                          if (text.charCodeAt(i) === 34) {
                              if (text.charCodeAt(i + 1) !== 34) break;
                              ++i;
                          }
                      }
                      I = i + 2;
                      var c = text.charCodeAt(i + 1);
                      if (c === 13) {
                          eol = true;
                          if (text.charCodeAt(i + 2) === 10) ++I;
                      } else if (c === 10) {
                          eol = true;
                      }
                      return text.slice(j + 1, i).replace(/""/g, '"');
                  }
                  while (I < N) {
                      var c = text.charCodeAt(I++), k = 1;
                      if (c === 10) eol = true; else if (c === 13) {
                          eol = true;
                          if (text.charCodeAt(I) === 10) ++I, ++k;
                      } else if (c !== delimiterCode) continue;
                      return text.slice(j, I - k);
                  }
                  return text.slice(j);
              }
  
              while ((t = token()) !== EOF) {
                  var a = [];
                  while (t !== EOL && t !== EOF) {
                      a.push(t);
                      t = token();
                  }
                  if (f && (a = f(a, n++)) == null) continue;
                  rows.push(a);
              }
              return rows;
          };
          dsv.format = function (rows) {
              if (Array.isArray(rows[0])) return dsv.formatRows(rows);
              var fieldSet = new d3_Set(), fields = [];
              rows.forEach(function (row) {
                  for (var field in row) {
                      if (!fieldSet.has(field)) {
                          fields.push(fieldSet.add(field));
                      }
                  }
              });
              return [fields.map(formatValue).join(delimiter)].concat(rows.map(function (row) {
                  return fields.map(function (field) {
                      return formatValue(row[field]);
                  }).join(delimiter);
              })).join("\n");
          };
          dsv.formatRows = function (rows) {
              return rows.map(formatRow).join("\n");
          };
          function formatRow(row) {
              return row.map(formatValue).join(delimiter);
          }
  
          function formatValue(text) {
              return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
          }
  
          return dsv;
      };
      d3.csv = d3.dsv(",", "text/csv");
      d3.tsv = d3.dsv("	", "text/tab-separated-values");
      var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_active, d3_timer_frame = d3_window[d3_vendorSymbol(d3_window, "requestAnimationFrame")] || function (callback) {
              setTimeout(callback, 17);
          };
      d3.timer = function (callback, delay, then) {
          var n = arguments.length;
          if (n < 2) delay = 0;
          if (n < 3) then = Date.now();
          var time = then + delay, timer = {
              c: callback,
              t: time,
              f: false,
              n: null
          };
          if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
          d3_timer_queueTail = timer;
          if (!d3_timer_interval) {
              d3_timer_timeout = clearTimeout(d3_timer_timeout);
              d3_timer_interval = 1;
              d3_timer_frame(d3_timer_step);
          }
      };
      function d3_timer_step() {
          var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
          if (delay > 24) {
              if (isFinite(delay)) {
                  clearTimeout(d3_timer_timeout);
                  d3_timer_timeout = setTimeout(d3_timer_step, delay);
              }
              d3_timer_interval = 0;
          } else {
              d3_timer_interval = 1;
              d3_timer_frame(d3_timer_step);
          }
      }
  
      d3.timer.flush = function () {
          d3_timer_mark();
          d3_timer_sweep();
      };
      function d3_timer_mark() {
          var now = Date.now();
          d3_timer_active = d3_timer_queueHead;
          while (d3_timer_active) {
              if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t);
              d3_timer_active = d3_timer_active.n;
          }
          return now;
      }
  
      function d3_timer_sweep() {
          var t0, t1 = d3_timer_queueHead, time = Infinity;
          while (t1) {
              if (t1.f) {
                  t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
              } else {
                  if (t1.t < time) time = t1.t;
                  t1 = (t0 = t1).n;
              }
          }
          d3_timer_queueTail = t0;
          return time;
      }
  
      function d3_format_precision(x, p) {
          return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
      }
  
      d3.round = function (x, n) {
          return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
      };
      var d3_formatPrefixes = ["y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y"].map(d3_formatPrefix);
      d3.formatPrefix = function (value, precision) {
          var i = 0;
          if (value) {
              if (value < 0) value *= -1;
              if (precision) value = d3.round(value, d3_format_precision(value, precision));
              i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
              i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
          }
          return d3_formatPrefixes[8 + i / 3];
      };
      function d3_formatPrefix(d, i) {
          var k = Math.pow(10, abs(8 - i) * 3);
          return {
              scale: i > 8 ? function (d) {
                  return d / k;
              } : function (d) {
                  return d * k;
              },
              symbol: d
          };
      }
  
      function d3_locale_numberFormat(locale) {
          var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function (value, width) {
              var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
              while (i > 0 && g > 0) {
                  if (length + g + 1 > width) g = Math.max(1, width - length);
                  t.push(value.substring(i -= g, i + g));
                  if ((length += g + 1) > width) break;
                  g = locale_grouping[j = (j + 1) % locale_grouping.length];
              }
              return t.reverse().join(locale_thousands);
          } : d3_identity;
          return function (specifier) {
              var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
              if (precision) precision = +precision.substring(1);
              if (zfill || fill === "0" && align === "=") {
                  zfill = fill = "0";
                  align = "=";
              }
              switch (type) {
                  case "n":
                      comma = true;
                      type = "g";
                      break;
  
                  case "%":
                      scale = 100;
                      suffix = "%";
                      type = "f";
                      break;
  
                  case "p":
                      scale = 100;
                      suffix = "%";
                      type = "r";
                      break;
  
                  case "b":
                  case "o":
                  case "x":
                  case "X":
                      if (symbol === "#") prefix = "0" + type.toLowerCase();
  
                  case "c":
                      exponent = false;
  
                  case "d":
                      integer = true;
                      precision = 0;
                      break;
  
                  case "s":
                      scale = -1;
                      type = "r";
                      break;
              }
              if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
              if (type == "r" && !precision) type = "g";
              if (precision != null) {
                  if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
              }
              type = d3_format_types.get(type) || d3_format_typeDefault;
              var zcomma = zfill && comma;
              return function (value) {
                  var fullSuffix = suffix;
                  if (integer && value % 1) return "";
                  var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
                  if (scale < 0) {
                      var unit = d3.formatPrefix(value, precision);
                      value = unit.scale(value);
                      fullSuffix = unit.symbol + suffix;
                  } else {
                      value *= scale;
                  }
                  value = type(value, precision);
                  var i = value.lastIndexOf("."), before, after;
                  if (i < 0) {
                      var j = exponent ? value.lastIndexOf("e") : -1;
                      if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
                  } else {
                      before = value.substring(0, i);
                      after = locale_decimal + value.substring(i + 1);
                  }
                  if (!zfill && comma) before = formatGroup(before, Infinity);
                  var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
                  if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
                  negative += prefix;
                  value = before + after;
                  return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
              };
          };
      }
  
      var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
      var d3_format_types = d3.map({
          b: function (x) {
              return x.toString(2);
          },
          c: function (x) {
              return String.fromCharCode(x);
          },
          o: function (x) {
              return x.toString(8);
          },
          x: function (x) {
              return x.toString(16);
          },
          X: function (x) {
              return x.toString(16).toUpperCase();
          },
          g: function (x, p) {
              return x.toPrecision(p);
          },
          e: function (x, p) {
              return x.toExponential(p);
          },
          f: function (x, p) {
              return x.toFixed(p);
          },
          r: function (x, p) {
              return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
          }
      });
  
      function d3_format_typeDefault(x) {
          return x + "";
      }
  
      var d3_time = d3.time = {}, d3_date = Date;
  
      function d3_date_utc() {
          this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
      }
  
      d3_date_utc.prototype = {
          getDate: function () {
              return this._.getUTCDate();
          },
          getDay: function () {
              return this._.getUTCDay();
          },
          getFullYear: function () {
              return this._.getUTCFullYear();
          },
          getHours: function () {
              return this._.getUTCHours();
          },
          getMilliseconds: function () {
              return this._.getUTCMilliseconds();
          },
          getMinutes: function () {
              return this._.getUTCMinutes();
          },
          getMonth: function () {
              return this._.getUTCMonth();
          },
          getSeconds: function () {
              return this._.getUTCSeconds();
          },
          getTime: function () {
              return this._.getTime();
          },
          getTimezoneOffset: function () {
              return 0;
          },
          valueOf: function () {
              return this._.valueOf();
          },
          setDate: function () {
              d3_time_prototype.setUTCDate.apply(this._, arguments);
          },
          setDay: function () {
              d3_time_prototype.setUTCDay.apply(this._, arguments);
          },
          setFullYear: function () {
              d3_time_prototype.setUTCFullYear.apply(this._, arguments);
          },
          setHours: function () {
              d3_time_prototype.setUTCHours.apply(this._, arguments);
          },
          setMilliseconds: function () {
              d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
          },
          setMinutes: function () {
              d3_time_prototype.setUTCMinutes.apply(this._, arguments);
          },
          setMonth: function () {
              d3_time_prototype.setUTCMonth.apply(this._, arguments);
          },
          setSeconds: function () {
              d3_time_prototype.setUTCSeconds.apply(this._, arguments);
          },
          setTime: function () {
              d3_time_prototype.setTime.apply(this._, arguments);
          }
      };
      var d3_time_prototype = Date.prototype;
  
      function d3_time_interval(local, step, number) {
          function round(date) {
              var d0 = local(date), d1 = offset(d0, 1);
              return date - d0 < d1 - date ? d0 : d1;
          }
  
          function ceil(date) {
              step(date = local(new d3_date(date - 1)), 1);
              return date;
          }
  
          function offset(date, k) {
              step(date = new d3_date(+date), k);
              return date;
          }
  
          function range(t0, t1, dt) {
              var time = ceil(t0), times = [];
              if (dt > 1) {
                  while (time < t1) {
                      if (!(number(time) % dt)) times.push(new Date(+time));
                      step(time, 1);
                  }
              } else {
                  while (time < t1) times.push(new Date(+time)), step(time, 1);
              }
              return times;
          }
  
          function range_utc(t0, t1, dt) {
              try {
                  d3_date = d3_date_utc;
                  var utc = new d3_date_utc();
                  utc._ = t0;
                  return range(utc, t1, dt);
              } finally {
                  d3_date = Date;
              }
          }
  
          local.floor = local;
          local.round = round;
          local.ceil = ceil;
          local.offset = offset;
          local.range = range;
          var utc = local.utc = d3_time_interval_utc(local);
          utc.floor = utc;
          utc.round = d3_time_interval_utc(round);
          utc.ceil = d3_time_interval_utc(ceil);
          utc.offset = d3_time_interval_utc(offset);
          utc.range = range_utc;
          return local;
      }
  
      function d3_time_interval_utc(method) {
          return function (date, k) {
              try {
                  d3_date = d3_date_utc;
                  var utc = new d3_date_utc();
                  utc._ = date;
                  return method(utc, k)._;
              } finally {
                  d3_date = Date;
              }
          };
      }
  
      d3_time.year = d3_time_interval(function (date) {
          date = d3_time.day(date);
          date.setMonth(0, 1);
          return date;
      }, function (date, offset) {
          date.setFullYear(date.getFullYear() + offset);
      }, function (date) {
          return date.getFullYear();
      });
      d3_time.years = d3_time.year.range;
      d3_time.years.utc = d3_time.year.utc.range;
      d3_time.day = d3_time_interval(function (date) {
          var day = new d3_date(2e3, 0);
          day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
          return day;
      }, function (date, offset) {
          date.setDate(date.getDate() + offset);
      }, function (date) {
          return date.getDate() - 1;
      });
      d3_time.days = d3_time.day.range;
      d3_time.days.utc = d3_time.day.utc.range;
      d3_time.dayOfYear = function (date) {
          var year = d3_time.year(date);
          return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
      };
      ["sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday"].forEach(function (day, i) {
          i = 7 - i;
          var interval = d3_time[day] = d3_time_interval(function (date) {
              (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
              return date;
          }, function (date, offset) {
              date.setDate(date.getDate() + Math.floor(offset) * 7);
          }, function (date) {
              var day = d3_time.year(date).getDay();
              return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
          });
          d3_time[day + "s"] = interval.range;
          d3_time[day + "s"].utc = interval.utc.range;
          d3_time[day + "OfYear"] = function (date) {
              var day = d3_time.year(date).getDay();
              return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
          };
      });
      d3_time.week = d3_time.sunday;
      d3_time.weeks = d3_time.sunday.range;
      d3_time.weeks.utc = d3_time.sunday.utc.range;
      d3_time.weekOfYear = d3_time.sundayOfYear;
      function d3_locale_timeFormat(locale) {
          var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
  
          function d3_time_format(template) {
              var n = template.length;
  
              function format(date) {
                  var string = [], i = -1, j = 0, c, p, f;
                  while (++i < n) {
                      if (template.charCodeAt(i) === 37) {
                          string.push(template.slice(j, i));
                          if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
                          if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
                          string.push(c);
                          j = i + 1;
                      }
                  }
                  string.push(template.slice(j, i));
                  return string.join("");
              }
  
              format.parse = function (string) {
                  var d = {
                      y: 1900,
                      m: 0,
                      d: 1,
                      H: 0,
                      M: 0,
                      S: 0,
                      L: 0,
                      Z: null
                  }, i = d3_time_parse(d, template, string, 0);
                  if (i != string.length) return null;
                  if ("p" in d) d.H = d.H % 12 + d.p * 12;
                  var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
                  if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("w" in d && ("W" in d || "U" in d)) {
                      date.setFullYear(d.y, 0, 1);
                      date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
                  } else date.setFullYear(d.y, d.m, d.d);
                  date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
                  return localZ ? date._ : date;
              };
              format.toString = function () {
                  return template;
              };
              return format;
          }
  
          function d3_time_parse(date, template, string, j) {
              var c, p, t, i = 0, n = template.length, m = string.length;
              while (i < n) {
                  if (j >= m) return -1;
                  c = template.charCodeAt(i++);
                  if (c === 37) {
                      t = template.charAt(i++);
                      p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
                      if (!p || (j = p(date, string, j)) < 0) return -1;
                  } else if (c != string.charCodeAt(j++)) {
                      return -1;
                  }
              }
              return j;
          }
  
          d3_time_format.utc = function (template) {
              var local = d3_time_format(template);
  
              function format(date) {
                  try {
                      d3_date = d3_date_utc;
                      var utc = new d3_date();
                      utc._ = date;
                      return local(utc);
                  } finally {
                      d3_date = Date;
                  }
              }
  
              format.parse = function (string) {
                  try {
                      d3_date = d3_date_utc;
                      var date = local.parse(string);
                      return date && date._;
                  } finally {
                      d3_date = Date;
                  }
              };
              format.toString = local.toString;
              return format;
          };
          d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
          var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
          locale_periods.forEach(function (p, i) {
              d3_time_periodLookup.set(p.toLowerCase(), i);
          });
          var d3_time_formats = {
              a: function (d) {
                  return locale_shortDays[d.getDay()];
              },
              A: function (d) {
                  return locale_days[d.getDay()];
              },
              b: function (d) {
                  return locale_shortMonths[d.getMonth()];
              },
              B: function (d) {
                  return locale_months[d.getMonth()];
              },
              c: d3_time_format(locale_dateTime),
              d: function (d, p) {
                  return d3_time_formatPad(d.getDate(), p, 2);
              },
              e: function (d, p) {
                  return d3_time_formatPad(d.getDate(), p, 2);
              },
              H: function (d, p) {
                  return d3_time_formatPad(d.getHours(), p, 2);
              },
              I: function (d, p) {
                  return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
              },
              j: function (d, p) {
                  return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
              },
              L: function (d, p) {
                  return d3_time_formatPad(d.getMilliseconds(), p, 3);
              },
              m: function (d, p) {
                  return d3_time_formatPad(d.getMonth() + 1, p, 2);
              },
              M: function (d, p) {
                  return d3_time_formatPad(d.getMinutes(), p, 2);
              },
              p: function (d) {
                  return locale_periods[+(d.getHours() >= 12)];
              },
              S: function (d, p) {
                  return d3_time_formatPad(d.getSeconds(), p, 2);
              },
              U: function (d, p) {
                  return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
              },
              w: function (d) {
                  return d.getDay();
              },
              W: function (d, p) {
                  return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
              },
              x: d3_time_format(locale_date),
              X: d3_time_format(locale_time),
              y: function (d, p) {
                  return d3_time_formatPad(d.getFullYear() % 100, p, 2);
              },
              Y: function (d, p) {
                  return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
              },
              Z: d3_time_zone,
              "%": function () {
                  return "%";
              }
          };
          var d3_time_parsers = {
              a: d3_time_parseWeekdayAbbrev,
              A: d3_time_parseWeekday,
              b: d3_time_parseMonthAbbrev,
              B: d3_time_parseMonth,
              c: d3_time_parseLocaleFull,
              d: d3_time_parseDay,
              e: d3_time_parseDay,
              H: d3_time_parseHour24,
              I: d3_time_parseHour24,
              j: d3_time_parseDayOfYear,
              L: d3_time_parseMilliseconds,
              m: d3_time_parseMonthNumber,
              M: d3_time_parseMinutes,
              p: d3_time_parseAmPm,
              S: d3_time_parseSeconds,
              U: d3_time_parseWeekNumberSunday,
              w: d3_time_parseWeekdayNumber,
              W: d3_time_parseWeekNumberMonday,
              x: d3_time_parseLocaleDate,
              X: d3_time_parseLocaleTime,
              y: d3_time_parseYear,
              Y: d3_time_parseFullYear,
              Z: d3_time_parseZone,
              "%": d3_time_parseLiteralPercent
          };
  
          function d3_time_parseWeekdayAbbrev(date, string, i) {
              d3_time_dayAbbrevRe.lastIndex = 0;
              var n = d3_time_dayAbbrevRe.exec(string.slice(i));
              return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
          }
  
          function d3_time_parseWeekday(date, string, i) {
              d3_time_dayRe.lastIndex = 0;
              var n = d3_time_dayRe.exec(string.slice(i));
              return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
          }
  
          function d3_time_parseMonthAbbrev(date, string, i) {
              d3_time_monthAbbrevRe.lastIndex = 0;
              var n = d3_time_monthAbbrevRe.exec(string.slice(i));
              return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
          }
  
          function d3_time_parseMonth(date, string, i) {
              d3_time_monthRe.lastIndex = 0;
              var n = d3_time_monthRe.exec(string.slice(i));
              return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
          }
  
          function d3_time_parseLocaleFull(date, string, i) {
              return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
          }
  
          function d3_time_parseLocaleDate(date, string, i) {
              return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
          }
  
          function d3_time_parseLocaleTime(date, string, i) {
              return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
          }
  
          function d3_time_parseAmPm(date, string, i) {
              var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
              return n == null ? -1 : (date.p = n, i);
          }
  
          return d3_time_format;
      }
  
      var d3_time_formatPads = {
          "-": "",
          _: " ",
          "0": "0"
      }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  
      function d3_time_formatPad(value, fill, width) {
          var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
          return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
      }
  
      function d3_time_formatRe(names) {
          return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
      }
  
      function d3_time_formatLookup(names) {
          var map = new d3_Map(), i = -1, n = names.length;
          while (++i < n) map.set(names[i].toLowerCase(), i);
          return map;
      }
  
      function d3_time_parseWeekdayNumber(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 1));
          return n ? (date.w = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseWeekNumberSunday(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i));
          return n ? (date.U = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseWeekNumberMonday(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i));
          return n ? (date.W = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseFullYear(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 4));
          return n ? (date.y = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseYear(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
      }
  
      function d3_time_parseZone(date, string, i) {
          return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string,
          i + 5) : -1;
      }
  
      function d3_time_expandYear(d) {
          return d + (d > 68 ? 1900 : 2e3);
      }
  
      function d3_time_parseMonthNumber(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
      }
  
      function d3_time_parseDay(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.d = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseDayOfYear(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 3));
          return n ? (date.j = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseHour24(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.H = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseMinutes(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.M = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseSeconds(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 2));
          return n ? (date.S = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_parseMilliseconds(date, string, i) {
          d3_time_numberRe.lastIndex = 0;
          var n = d3_time_numberRe.exec(string.slice(i, i + 3));
          return n ? (date.L = +n[0], i + n[0].length) : -1;
      }
  
      function d3_time_zone(d) {
          var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
          return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
      }
  
      function d3_time_parseLiteralPercent(date, string, i) {
          d3_time_percentRe.lastIndex = 0;
          var n = d3_time_percentRe.exec(string.slice(i, i + 1));
          return n ? i + n[0].length : -1;
      }
  
      function d3_time_formatMulti(formats) {
          var n = formats.length, i = -1;
          while (++i < n) formats[i][0] = this(formats[i][0]);
          return function (date) {
              var i = 0, f = formats[i];
              while (!f[1](date)) f = formats[++i];
              return f[0](date);
          };
      }
  
      d3.locale = function (locale) {
          return {
              numberFormat: d3_locale_numberFormat(locale),
              timeFormat: d3_locale_timeFormat(locale)
          };
      };
      var d3_locale_enUS = d3.locale({
          decimal: ".",
          thousands: ",",
          grouping: [3],
          currency: ["$", ""],
          dateTime: "%a %b %e %X %Y",
          date: "%m/%d/%Y",
          time: "%H:%M:%S",
          periods: ["AM", "PM"],
          days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
          shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
          months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
          shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
      });
      d3.format = d3_locale_enUS.numberFormat;
      d3.geo = {};
      function d3_adder() {
      }
  
      d3_adder.prototype = {
          s: 0,
          t: 0,
          add: function (y) {
              d3_adderSum(y, this.t, d3_adderTemp);
              d3_adderSum(d3_adderTemp.s, this.s, this);
              if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
          },
          reset: function () {
              this.s = this.t = 0;
          },
          valueOf: function () {
              return this.s;
          }
      };
      var d3_adderTemp = new d3_adder();
  
      function d3_adderSum(a, b, o) {
          var x = o.s = a + b, bv = x - a, av = x - bv;
          o.t = a - av + (b - bv);
      }
  
      d3.geo.stream = function (object, listener) {
          if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
              d3_geo_streamObjectType[object.type](object, listener);
          } else {
              d3_geo_streamGeometry(object, listener);
          }
      };
      function d3_geo_streamGeometry(geometry, listener) {
          if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
              d3_geo_streamGeometryType[geometry.type](geometry, listener);
          }
      }
  
      var d3_geo_streamObjectType = {
          Feature: function (feature, listener) {
              d3_geo_streamGeometry(feature.geometry, listener);
          },
          FeatureCollection: function (object, listener) {
              var features = object.features, i = -1, n = features.length;
              while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
          }
      };
      var d3_geo_streamGeometryType = {
          Sphere: function (object, listener) {
              listener.sphere();
          },
          Point: function (object, listener) {
              object = object.coordinates;
              listener.point(object[0], object[1], object[2]);
          },
          MultiPoint: function (object, listener) {
              var coordinates = object.coordinates, i = -1, n = coordinates.length;
              while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
          },
          LineString: function (object, listener) {
              d3_geo_streamLine(object.coordinates, listener, 0);
          },
          MultiLineString: function (object, listener) {
              var coordinates = object.coordinates, i = -1, n = coordinates.length;
              while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
          },
          Polygon: function (object, listener) {
              d3_geo_streamPolygon(object.coordinates, listener);
          },
          MultiPolygon: function (object, listener) {
              var coordinates = object.coordinates, i = -1, n = coordinates.length;
              while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
          },
          GeometryCollection: function (object, listener) {
              var geometries = object.geometries, i = -1, n = geometries.length;
              while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
          }
      };
  
      function d3_geo_streamLine(coordinates, listener, closed) {
          var i = -1, n = coordinates.length - closed, coordinate;
          listener.lineStart();
          while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
          listener.lineEnd();
      }
  
      function d3_geo_streamPolygon(coordinates, listener) {
          var i = -1, n = coordinates.length;
          listener.polygonStart();
          while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
          listener.polygonEnd();
      }
  
      d3.geo.area = function (object) {
          d3_geo_areaSum = 0;
          d3.geo.stream(object, d3_geo_area);
          return d3_geo_areaSum;
      };
      var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
      var d3_geo_area = {
          sphere: function () {
              d3_geo_areaSum += 4 * π;
          },
          point: d3_noop,
          lineStart: d3_noop,
          lineEnd: d3_noop,
          polygonStart: function () {
              d3_geo_areaRingSum.reset();
              d3_geo_area.lineStart = d3_geo_areaRingStart;
          },
          polygonEnd: function () {
              var area = 2 * d3_geo_areaRingSum;
              d3_geo_areaSum += area < 0 ? 4 * π + area : area;
              d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
          }
      };
  
      function d3_geo_areaRingStart() {
          var λ00, φ00, λ0, cosφ0, sinφ0;
          d3_geo_area.point = function (λ, φ) {
              d3_geo_area.point = nextPoint;
              λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4),
                  sinφ0 = Math.sin(φ);
          };
          function nextPoint(λ, φ) {
              λ *= d3_radians;
              φ = φ * d3_radians / 2 + π / 4;
              var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
              d3_geo_areaRingSum.add(Math.atan2(v, u));
              λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
          }
  
          d3_geo_area.lineEnd = function () {
              nextPoint(λ00, φ00);
          };
      }
  
      function d3_geo_cartesian(spherical) {
          var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
          return [cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ)];
      }
  
      function d3_geo_cartesianDot(a, b) {
          return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
      }
  
      function d3_geo_cartesianCross(a, b) {
          return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]];
      }
  
      function d3_geo_cartesianAdd(a, b) {
          a[0] += b[0];
          a[1] += b[1];
          a[2] += b[2];
      }
  
      function d3_geo_cartesianScale(vector, k) {
          return [vector[0] * k, vector[1] * k, vector[2] * k];
      }
  
      function d3_geo_cartesianNormalize(d) {
          var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
          d[0] /= l;
          d[1] /= l;
          d[2] /= l;
      }
  
      function d3_geo_spherical(cartesian) {
          return [Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2])];
      }
  
      function d3_geo_sphericalEqual(a, b) {
          return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
      }
  
      d3.geo.bounds = function () {
          var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
          var bound = {
              point: point,
              lineStart: lineStart,
              lineEnd: lineEnd,
              polygonStart: function () {
                  bound.point = ringPoint;
                  bound.lineStart = ringStart;
                  bound.lineEnd = ringEnd;
                  dλSum = 0;
                  d3_geo_area.polygonStart();
              },
              polygonEnd: function () {
                  d3_geo_area.polygonEnd();
                  bound.point = point;
                  bound.lineStart = lineStart;
                  bound.lineEnd = lineEnd;
                  if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
                  range[0] = λ0, range[1] = λ1;
              }
          };
  
          function point(λ, φ) {
              ranges.push(range = [λ0 = λ, λ1 = λ]);
              if (φ < φ0) φ0 = φ;
              if (φ > φ1) φ1 = φ;
          }
  
          function linePoint(λ, φ) {
              var p = d3_geo_cartesian([λ * d3_radians, φ * d3_radians]);
              if (p0) {
                  var normal = d3_geo_cartesianCross(p0, p), equatorial = [normal[1], -normal[0], 0], inflection = d3_geo_cartesianCross(equatorial, normal);
                  d3_geo_cartesianNormalize(inflection);
                  inflection = d3_geo_spherical(inflection);
                  var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
                  if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
                      var φi = inflection[1] * d3_degrees;
                      if (φi > φ1) φ1 = φi;
                  } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
                      var φi = -inflection[1] * d3_degrees;
                      if (φi < φ0) φ0 = φi;
                  } else {
                      if (φ < φ0) φ0 = φ;
                      if (φ > φ1) φ1 = φ;
                  }
                  if (antimeridian) {
                      if (λ < λ_) {
                          if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
                      } else {
                          if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
                      }
                  } else {
                      if (λ1 >= λ0) {
                          if (λ < λ0) λ0 = λ;
                          if (λ > λ1) λ1 = λ;
                      } else {
                          if (λ > λ_) {
                              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
                          } else {
                              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
                          }
                      }
                  }
              } else {
                  point(λ, φ);
              }
              p0 = p, λ_ = λ;
          }
  
          function lineStart() {
              bound.point = linePoint;
          }
  
          function lineEnd() {
              range[0] = λ0, range[1] = λ1;
              bound.point = point;
              p0 = null;
          }
  
          function ringPoint(λ, φ) {
              if (p0) {
                  var dλ = λ - λ_;
                  dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
              } else λ__ = λ, φ__ = φ;
              d3_geo_area.point(λ, φ);
              linePoint(λ, φ);
          }
  
          function ringStart() {
              d3_geo_area.lineStart();
          }
  
          function ringEnd() {
              ringPoint(λ__, φ__);
              d3_geo_area.lineEnd();
              if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
              range[0] = λ0, range[1] = λ1;
              p0 = null;
          }
  
          function angle(λ0, λ1) {
              return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
          }
  
          function compareRanges(a, b) {
              return a[0] - b[0];
          }
  
          function withinRange(x, range) {
              return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
          }
  
          return function (feature) {
              φ1 = λ1 = -(λ0 = φ0 = Infinity);
              ranges = [];
              d3.geo.stream(feature, bound);
              var n = ranges.length;
              if (n) {
                  ranges.sort(compareRanges);
                  for (var i = 1, a = ranges[0], b, merged = [a]; i < n; ++i) {
                      b = ranges[i];
                      if (withinRange(b[0], a) || withinRange(b[1], a)) {
                          if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
                          if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
                      } else {
                          merged.push(a = b);
                      }
                  }
                  var best = -Infinity, dλ;
                  for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
                      b = merged[i];
                      if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
                  }
              }
              ranges = range = null;
              return λ0 === Infinity || φ0 === Infinity ? [[NaN, NaN], [NaN, NaN]] : [[λ0, φ0], [λ1, φ1]];
          };
      }();
      d3.geo.centroid = function (object) {
          d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
          d3.geo.stream(object, d3_geo_centroid);
          var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
          if (m < ε2) {
              x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
              if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
              m = x * x + y * y + z * z;
              if (m < ε2) return [NaN, NaN];
          }
          return [Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees];
      };
      var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
      var d3_geo_centroid = {
          sphere: d3_noop,
          point: d3_geo_centroidPoint,
          lineStart: d3_geo_centroidLineStart,
          lineEnd: d3_geo_centroidLineEnd,
          polygonStart: function () {
              d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
          },
          polygonEnd: function () {
              d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
          }
      };
  
      function d3_geo_centroidPoint(λ, φ) {
          λ *= d3_radians;
          var cosφ = Math.cos(φ *= d3_radians);
          d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
      }
  
      function d3_geo_centroidPointXYZ(x, y, z) {
          ++d3_geo_centroidW0;
          d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
          d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
          d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
      }
  
      function d3_geo_centroidLineStart() {
          var x0, y0, z0;
          d3_geo_centroid.point = function (λ, φ) {
              λ *= d3_radians;
              var cosφ = Math.cos(φ *= d3_radians);
              x0 = cosφ * Math.cos(λ);
              y0 = cosφ * Math.sin(λ);
              z0 = Math.sin(φ);
              d3_geo_centroid.point = nextPoint;
              d3_geo_centroidPointXYZ(x0, y0, z0);
          };
          function nextPoint(λ, φ) {
              λ *= d3_radians;
              var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
              d3_geo_centroidW1 += w;
              d3_geo_centroidX1 += w * (x0 + (x0 = x));
              d3_geo_centroidY1 += w * (y0 + (y0 = y));
              d3_geo_centroidZ1 += w * (z0 + (z0 = z));
              d3_geo_centroidPointXYZ(x0, y0, z0);
          }
      }
  
      function d3_geo_centroidLineEnd() {
          d3_geo_centroid.point = d3_geo_centroidPoint;
      }
  
      function d3_geo_centroidRingStart() {
          var λ00, φ00, x0, y0, z0;
          d3_geo_centroid.point = function (λ, φ) {
              λ00 = λ, φ00 = φ;
              d3_geo_centroid.point = nextPoint;
              λ *= d3_radians;
              var cosφ = Math.cos(φ *= d3_radians);
              x0 = cosφ * Math.cos(λ);
              y0 = cosφ * Math.sin(λ);
              z0 = Math.sin(φ);
              d3_geo_centroidPointXYZ(x0, y0, z0);
          };
          d3_geo_centroid.lineEnd = function () {
              nextPoint(λ00, φ00);
              d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
              d3_geo_centroid.point = d3_geo_centroidPoint;
          };
          function nextPoint(λ, φ) {
              λ *= d3_radians;
              var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
              d3_geo_centroidX2 += v * cx;
              d3_geo_centroidY2 += v * cy;
              d3_geo_centroidZ2 += v * cz;
              d3_geo_centroidW1 += w;
              d3_geo_centroidX1 += w * (x0 + (x0 = x));
              d3_geo_centroidY1 += w * (y0 + (y0 = y));
              d3_geo_centroidZ1 += w * (z0 + (z0 = z));
              d3_geo_centroidPointXYZ(x0, y0, z0);
          }
      }
  
      function d3_geo_compose(a, b) {
          function compose(x, y) {
              return x = a(x, y), b(x[0], x[1]);
          }
  
          if (a.invert && b.invert) compose.invert = function (x, y) {
              return x = b.invert(x, y), x && a.invert(x[0], x[1]);
          };
          return compose;
      }
  
      function d3_true() {
          return true;
      }
  
      function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
          var subject = [], clip = [];
          segments.forEach(function (segment) {
              if ((n = segment.length - 1) <= 0) return;
              var n, p0 = segment[0], p1 = segment[n];
              if (d3_geo_sphericalEqual(p0, p1)) {
                  listener.lineStart();
                  for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
                  listener.lineEnd();
                  return;
              }
              var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
              a.o = b;
              subject.push(a);
              clip.push(b);
              a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
              b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
              a.o = b;
              subject.push(a);
              clip.push(b);
          });
          clip.sort(compare);
          d3_geo_clipPolygonLinkCircular(subject);
          d3_geo_clipPolygonLinkCircular(clip);
          if (!subject.length) return;
          for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
              clip[i].e = entry = !entry;
          }
          var start = subject[0], points, point;
          while (1) {
              var current = start, isSubject = true;
              while (current.v) if ((current = current.n) === start) return;
              points = current.z;
              listener.lineStart();
              do {
                  current.v = current.o.v = true;
                  if (current.e) {
                      if (isSubject) {
                          for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
                      } else {
                          interpolate(current.x, current.n.x, 1, listener);
                      }
                      current = current.n;
                  } else {
                      if (isSubject) {
                          points = current.p.z;
                          for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
                      } else {
                          interpolate(current.x, current.p.x, -1, listener);
                      }
                      current = current.p;
                  }
                  current = current.o;
                  points = current.z;
                  isSubject = !isSubject;
              } while (!current.v);
              listener.lineEnd();
          }
      }
  
      function d3_geo_clipPolygonLinkCircular(array) {
          if (!(n = array.length)) return;
          var n, i = 0, a = array[0], b;
          while (++i < n) {
              a.n = b = array[i];
              b.p = a;
              a = b;
          }
          a.n = b = array[0];
          b.p = a;
      }
  
      function d3_geo_clipPolygonIntersection(point, points, other, entry) {
          this.x = point;
          this.z = points;
          this.o = other;
          this.e = entry;
          this.v = false;
          this.n = this.p = null;
      }
  
      function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
          return function (rotate, listener) {
              var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
              var clip = {
                  point: point,
                  lineStart: lineStart,
                  lineEnd: lineEnd,
                  polygonStart: function () {
                      clip.point = pointRing;
                      clip.lineStart = ringStart;
                      clip.lineEnd = ringEnd;
                      segments = [];
                      polygon = [];
                  },
                  polygonEnd: function () {
                      clip.point = point;
                      clip.lineStart = lineStart;
                      clip.lineEnd = lineEnd;
                      segments = d3.merge(segments);
                      var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
                      if (segments.length) {
                          if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
                          d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
                      } else if (clipStartInside) {
                          if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
                          listener.lineStart();
                          interpolate(null, null, 1, listener);
                          listener.lineEnd();
                      }
                      if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
                      segments = polygon = null;
                  },
                  sphere: function () {
                      listener.polygonStart();
                      listener.lineStart();
                      interpolate(null, null, 1, listener);
                      listener.lineEnd();
                      listener.polygonEnd();
                  }
              };
  
              function point(λ, φ) {
                  var point = rotate(λ, φ);
                  if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
              }
  
              function pointLine(λ, φ) {
                  var point = rotate(λ, φ);
                  line.point(point[0], point[1]);
              }
  
              function lineStart() {
                  clip.point = pointLine;
                  line.lineStart();
              }
  
              function lineEnd() {
                  clip.point = point;
                  line.lineEnd();
              }
  
              var segments;
              var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
  
              function pointRing(λ, φ) {
                  ring.push([λ, φ]);
                  var point = rotate(λ, φ);
                  ringListener.point(point[0], point[1]);
              }
  
              function ringStart() {
                  ringListener.lineStart();
                  ring = [];
              }
  
              function ringEnd() {
                  pointRing(ring[0][0], ring[0][1]);
                  ringListener.lineEnd();
                  var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
                  ring.pop();
                  polygon.push(ring);
                  ring = null;
                  if (!n) return;
                  if (clean & 1) {
                      segment = ringSegments[0];
                      var n = segment.length - 1, i = -1, point;
                      if (n > 0) {
                          if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
                          listener.lineStart();
                          while (++i < n) listener.point((point = segment[i])[0], point[1]);
                          listener.lineEnd();
                      }
                      return;
                  }
                  if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
                  segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
              }
  
              return clip;
          };
      }
  
      function d3_geo_clipSegmentLength1(segment) {
          return segment.length > 1;
      }
  
      function d3_geo_clipBufferListener() {
          var lines = [], line;
          return {
              lineStart: function () {
                  lines.push(line = []);
              },
              point: function (λ, φ) {
                  line.push([λ, φ]);
              },
              lineEnd: d3_noop,
              buffer: function () {
                  var buffer = lines;
                  lines = [];
                  line = null;
                  return buffer;
              },
              rejoin: function () {
                  if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
              }
          };
      }
  
      function d3_geo_clipSort(a, b) {
          return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
      }
  
      var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [-π, -π / 2]);
  
      function d3_geo_clipAntimeridianLine(listener) {
          var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
          return {
              lineStart: function () {
                  listener.lineStart();
                  clean = 1;
              },
              point: function (λ1, φ1) {
                  var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
                  if (abs(dλ - π) < ε) {
                      listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
                      listener.point(sλ0, φ0);
                      listener.lineEnd();
                      listener.lineStart();
                      listener.point(sλ1, φ0);
                      listener.point(λ1, φ0);
                      clean = 0;
                  } else if (sλ0 !== sλ1 && dλ >= π) {
                      if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
                      if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
                      φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
                      listener.point(sλ0, φ0);
                      listener.lineEnd();
                      listener.lineStart();
                      listener.point(sλ1, φ0);
                      clean = 0;
                  }
                  listener.point(λ0 = λ1, φ0 = φ1);
                  sλ0 = sλ1;
              },
              lineEnd: function () {
                  listener.lineEnd();
                  λ0 = φ0 = NaN;
              },
              clean: function () {
                  return 2 - clean;
              }
          };
      }
  
      function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
          var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
          return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
      }
  
      function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
          var φ;
          if (from == null) {
              φ = direction * halfπ;
              listener.point(-π, φ);
              listener.point(0, φ);
              listener.point(π, φ);
              listener.point(π, 0);
              listener.point(π, -φ);
              listener.point(0, -φ);
              listener.point(-π, -φ);
              listener.point(-π, 0);
              listener.point(-π, φ);
          } else if (abs(from[0] - to[0]) > ε) {
              var s = from[0] < to[0] ? π : -π;
              φ = direction * s / 2;
              listener.point(-s, φ);
              listener.point(0, φ);
              listener.point(s, φ);
          } else {
              listener.point(to[0], to[1]);
          }
      }
  
      function d3_geo_pointInPolygon(point, polygon) {
          var meridian = point[0], parallel = point[1], meridianNormal = [Math.sin(meridian), -Math.cos(meridian), 0], polarAngle = 0, winding = 0;
          d3_geo_areaRingSum.reset();
          for (var i = 0, n = polygon.length; i < n; ++i) {
              var ring = polygon[i], m = ring.length;
              if (!m) continue;
              var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
              while (true) {
                  if (j === m) j = 0;
                  point = ring[j];
                  var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
                  d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
                  polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
                  if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
                      var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
                      d3_geo_cartesianNormalize(arc);
                      var intersection = d3_geo_cartesianCross(meridianNormal, arc);
                      d3_geo_cartesianNormalize(intersection);
                      var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
                      if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
                          winding += antimeridian ^ dλ >= 0 ? 1 : -1;
                      }
                  }
                  if (!j++) break;
                  λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
              }
          }
          return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
      }
  
      function d3_geo_clipCircle(radius) {
          var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
          return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-π, radius - π]);
          function visible(λ, φ) {
              return Math.cos(λ) * Math.cos(φ) > cr;
          }
  
          function clipLine(listener) {
              var point0, c0, v0, v00, clean;
              return {
                  lineStart: function () {
                      v00 = v0 = false;
                      clean = 1;
                  },
                  point: function (λ, φ) {
                      var point1 = [λ, φ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
                      if (!point0 && (v00 = v0 = v)) listener.lineStart();
                      if (v !== v0) {
                          point2 = intersect(point0, point1);
                          if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
                              point1[0] += ε;
                              point1[1] += ε;
                              v = visible(point1[0], point1[1]);
                          }
                      }
                      if (v !== v0) {
                          clean = 0;
                          if (v) {
                              listener.lineStart();
                              point2 = intersect(point1, point0);
                              listener.point(point2[0], point2[1]);
                          } else {
                              point2 = intersect(point0, point1);
                              listener.point(point2[0], point2[1]);
                              listener.lineEnd();
                          }
                          point0 = point2;
                      } else if (notHemisphere && point0 && smallRadius ^ v) {
                          var t;
                          if (!(c & c0) && (t = intersect(point1, point0, true))) {
                              clean = 0;
                              if (smallRadius) {
                                  listener.lineStart();
                                  listener.point(t[0][0], t[0][1]);
                                  listener.point(t[1][0], t[1][1]);
                                  listener.lineEnd();
                              } else {
                                  listener.point(t[1][0], t[1][1]);
                                  listener.lineEnd();
                                  listener.lineStart();
                                  listener.point(t[0][0], t[0][1]);
                              }
                          }
                      }
                      if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
                          listener.point(point1[0], point1[1]);
                      }
                      point0 = point1, v0 = v, c0 = c;
                  },
                  lineEnd: function () {
                      if (v0) listener.lineEnd();
                      point0 = null;
                  },
                  clean: function () {
                      return clean | (v00 && v0) << 1;
                  }
              };
          }
  
          function intersect(a, b, two) {
              var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
              var n1 = [1, 0, 0], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
              if (!determinant) return !two && a;
              var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
              d3_geo_cartesianAdd(A, B);
              var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
              if (t2 < 0) return;
              var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
              d3_geo_cartesianAdd(q, A);
              q = d3_geo_spherical(q);
              if (!two) return q;
              var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
              if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
              var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
              if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
              if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
                  var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
                  d3_geo_cartesianAdd(q1, A);
                  return [q, d3_geo_spherical(q1)];
              }
          }
  
          function code(λ, φ) {
              var r = smallRadius ? radius : π - radius, code = 0;
              if (λ < -r) code |= 1; else if (λ > r) code |= 2;
              if (φ < -r) code |= 4; else if (φ > r) code |= 8;
              return code;
          }
      }
  
      function d3_geom_clipLine(x0, y0, x1, y1) {
          return function (line) {
              var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
              r = x0 - ax;
              if (!dx && r > 0) return;
              r /= dx;
              if (dx < 0) {
                  if (r < t0) return;
                  if (r < t1) t1 = r;
              } else if (dx > 0) {
                  if (r > t1) return;
                  if (r > t0) t0 = r;
              }
              r = x1 - ax;
              if (!dx && r < 0) return;
              r /= dx;
              if (dx < 0) {
                  if (r > t1) return;
                  if (r > t0) t0 = r;
              } else if (dx > 0) {
                  if (r < t0) return;
                  if (r < t1) t1 = r;
              }
              r = y0 - ay;
              if (!dy && r > 0) return;
              r /= dy;
              if (dy < 0) {
                  if (r < t0) return;
                  if (r < t1) t1 = r;
              } else if (dy > 0) {
                  if (r > t1) return;
                  if (r > t0) t0 = r;
              }
              r = y1 - ay;
              if (!dy && r < 0) return;
              r /= dy;
              if (dy < 0) {
                  if (r > t1) return;
                  if (r > t0) t0 = r;
              } else if (dy > 0) {
                  if (r < t0) return;
                  if (r < t1) t1 = r;
              }
              if (t0 > 0) line.a = {
                  x: ax + t0 * dx,
                  y: ay + t0 * dy
              };
              if (t1 < 1) line.b = {
                  x: ax + t1 * dx,
                  y: ay + t1 * dy
              };
              return line;
          };
      }
  
      var d3_geo_clipExtentMAX = 1e9;
      d3.geo.clipExtent = function () {
          var x0, y0, x1, y1, stream, clip, clipExtent = {
              stream: function (output) {
                  if (stream) stream.valid = false;
                  stream = clip(output);
                  stream.valid = true;
                  return stream;
              },
              extent: function (_) {
                  if (!arguments.length) return [[x0, y0], [x1, y1]];
                  clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
                  if (stream) stream.valid = false, stream = null;
                  return clipExtent;
              }
          };
          return clipExtent.extent([[0, 0], [960, 500]]);
      };
      function d3_geo_clipExtent(x0, y0, x1, y1) {
          return function (listener) {
              var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
              var clip = {
                  point: point,
                  lineStart: lineStart,
                  lineEnd: lineEnd,
                  polygonStart: function () {
                      listener = bufferListener;
                      segments = [];
                      polygon = [];
                      clean = true;
                  },
                  polygonEnd: function () {
                      listener = listener_;
                      segments = d3.merge(segments);
                      var clipStartInside = insidePolygon([x0, y1]), inside = clean && clipStartInside, visible = segments.length;
                      if (inside || visible) {
                          listener.polygonStart();
                          if (inside) {
                              listener.lineStart();
                              interpolate(null, null, 1, listener);
                              listener.lineEnd();
                          }
                          if (visible) {
                              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
                          }
                          listener.polygonEnd();
                      }
                      segments = polygon = ring = null;
                  }
              };
  
              function insidePolygon(p) {
                  var wn = 0, n = polygon.length, y = p[1];
                  for (var i = 0; i < n; ++i) {
                      for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
                          b = v[j];
                          if (a[1] <= y) {
                              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
                          } else {
                              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
                          }
                          a = b;
                      }
                  }
                  return wn !== 0;
              }
  
              function interpolate(from, to, direction, listener) {
                  var a = 0, a1 = 0;
                  if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
                      do {
                          listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
                      } while ((a = (a + direction + 4) % 4) !== a1);
                  } else {
                      listener.point(to[0], to[1]);
                  }
              }
  
              function pointVisible(x, y) {
                  return x0 <= x && x <= x1 && y0 <= y && y <= y1;
              }
  
              function point(x, y) {
                  if (pointVisible(x, y)) listener.point(x, y);
              }
  
              var x__, y__, v__, x_, y_, v_, first, clean;
  
              function lineStart() {
                  clip.point = linePoint;
                  if (polygon) polygon.push(ring = []);
                  first = true;
                  v_ = false;
                  x_ = y_ = NaN;
              }
  
              function lineEnd() {
                  if (segments) {
                      linePoint(x__, y__);
                      if (v__ && v_) bufferListener.rejoin();
                      segments.push(bufferListener.buffer());
                  }
                  clip.point = point;
                  if (v_) listener.lineEnd();
              }
  
              function linePoint(x, y) {
                  x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
                  y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
                  var v = pointVisible(x, y);
                  if (polygon) ring.push([x, y]);
                  if (first) {
                      x__ = x, y__ = y, v__ = v;
                      first = false;
                      if (v) {
                          listener.lineStart();
                          listener.point(x, y);
                      }
                  } else {
                      if (v && v_) listener.point(x, y); else {
                          var l = {
                              a: {
                                  x: x_,
                                  y: y_
                              },
                              b: {
                                  x: x,
                                  y: y
                              }
                          };
                          if (clipLine(l)) {
                              if (!v_) {
                                  listener.lineStart();
                                  listener.point(l.a.x, l.a.y);
                              }
                              listener.point(l.b.x, l.b.y);
                              if (!v) listener.lineEnd();
                              clean = false;
                          } else if (v) {
                              listener.lineStart();
                              listener.point(x, y);
                              clean = false;
                          }
                      }
                  }
                  x_ = x, y_ = y, v_ = v;
              }
  
              return clip;
          };
          function corner(p, direction) {
              return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
          }
  
          function compare(a, b) {
              return comparePoints(a.x, b.x);
          }
  
          function comparePoints(a, b) {
              var ca = corner(a, 1), cb = corner(b, 1);
              return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
          }
      }
  
      function d3_geo_conic(projectAt) {
          var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
          p.parallels = function (_) {
              if (!arguments.length) return [φ0 / π * 180, φ1 / π * 180];
              return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
          };
          return p;
      }
  
      function d3_geo_conicEqualArea(φ0, φ1) {
          var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
  
          function forward(λ, φ) {
              var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
              return [ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ)];
          }
  
          forward.invert = function (x, y) {
              var ρ0_y = ρ0 - y;
              return [Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n))];
          };
          return forward;
      }
  
      (d3.geo.conicEqualArea = function () {
          return d3_geo_conic(d3_geo_conicEqualArea);
      }).raw = d3_geo_conicEqualArea;
      d3.geo.albers = function () {
          return d3.geo.conicEqualArea().rotate([96, 0]).center([-.6, 38.7]).parallels([29.5, 45.5]).scale(1070);
      };
      d3.geo.albersUsa = function () {
          var lower48 = d3.geo.albers();
          var alaska = d3.geo.conicEqualArea().rotate([154, 0]).center([-2, 58.5]).parallels([55, 65]);
          var hawaii = d3.geo.conicEqualArea().rotate([157, 0]).center([-3, 19.9]).parallels([8, 18]);
          var point, pointStream = {
              point: function (x, y) {
                  point = [x, y];
              }
          }, lower48Point, alaskaPoint, hawaiiPoint;
  
          function albersUsa(coordinates) {
              var x = coordinates[0], y = coordinates[1];
              point = null;
              (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
              return point;
          }
  
          albersUsa.invert = function (coordinates) {
              var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
              return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
          };
          albersUsa.stream = function (stream) {
              var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
              return {
                  point: function (x, y) {
                      lower48Stream.point(x, y);
                      alaskaStream.point(x, y);
                      hawaiiStream.point(x, y);
                  },
                  sphere: function () {
                      lower48Stream.sphere();
                      alaskaStream.sphere();
                      hawaiiStream.sphere();
                  },
                  lineStart: function () {
                      lower48Stream.lineStart();
                      alaskaStream.lineStart();
                      hawaiiStream.lineStart();
                  },
                  lineEnd: function () {
                      lower48Stream.lineEnd();
                      alaskaStream.lineEnd();
                      hawaiiStream.lineEnd();
                  },
                  polygonStart: function () {
                      lower48Stream.polygonStart();
                      alaskaStream.polygonStart();
                      hawaiiStream.polygonStart();
                  },
                  polygonEnd: function () {
                      lower48Stream.polygonEnd();
                      alaskaStream.polygonEnd();
                      hawaiiStream.polygonEnd();
                  }
              };
          };
          albersUsa.precision = function (_) {
              if (!arguments.length) return lower48.precision();
              lower48.precision(_);
              alaska.precision(_);
              hawaii.precision(_);
              return albersUsa;
          };
          albersUsa.scale = function (_) {
              if (!arguments.length) return lower48.scale();
              lower48.scale(_);
              alaska.scale(_ * .35);
              hawaii.scale(_);
              return albersUsa.translate(lower48.translate());
          };
          albersUsa.translate = function (_) {
              if (!arguments.length) return lower48.translate();
              var k = lower48.scale(), x = +_[0], y = +_[1];
              lower48Point = lower48.translate(_).clipExtent([[x - .455 * k, y - .238 * k], [x + .455 * k, y + .238 * k]]).stream(pointStream).point;
              alaskaPoint = alaska.translate([x - .307 * k, y + .201 * k]).clipExtent([[x - .425 * k + ε, y + .12 * k + ε], [x - .214 * k - ε, y + .234 * k - ε]]).stream(pointStream).point;
              hawaiiPoint = hawaii.translate([x - .205 * k, y + .212 * k]).clipExtent([[x - .214 * k + ε, y + .166 * k + ε], [x - .115 * k - ε, y + .234 * k - ε]]).stream(pointStream).point;
              return albersUsa;
          };
          return albersUsa.scale(1070);
      };
      var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
          point: d3_noop,
          lineStart: d3_noop,
          lineEnd: d3_noop,
          polygonStart: function () {
              d3_geo_pathAreaPolygon = 0;
              d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
          },
          polygonEnd: function () {
              d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
              d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
          }
      };
  
      function d3_geo_pathAreaRingStart() {
          var x00, y00, x0, y0;
          d3_geo_pathArea.point = function (x, y) {
              d3_geo_pathArea.point = nextPoint;
              x00 = x0 = x, y00 = y0 = y;
          };
          function nextPoint(x, y) {
              d3_geo_pathAreaPolygon += y0 * x - x0 * y;
              x0 = x, y0 = y;
          }
  
          d3_geo_pathArea.lineEnd = function () {
              nextPoint(x00, y00);
          };
      }
  
      var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
      var d3_geo_pathBounds = {
          point: d3_geo_pathBoundsPoint,
          lineStart: d3_noop,
          lineEnd: d3_noop,
          polygonStart: d3_noop,
          polygonEnd: d3_noop
      };
  
      function d3_geo_pathBoundsPoint(x, y) {
          if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
          if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
          if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
          if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
      }
  
      function d3_geo_pathBuffer() {
          var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
          var stream = {
              point: point,
              lineStart: function () {
                  stream.point = pointLineStart;
              },
              lineEnd: lineEnd,
              polygonStart: function () {
                  stream.lineEnd = lineEndPolygon;
              },
              polygonEnd: function () {
                  stream.lineEnd = lineEnd;
                  stream.point = point;
              },
              pointRadius: function (_) {
                  pointCircle = d3_geo_pathBufferCircle(_);
                  return stream;
              },
              result: function () {
                  if (buffer.length) {
                      var result = buffer.join("");
                      buffer = [];
                      return result;
                  }
              }
          };
  
          function point(x, y) {
              buffer.push("M", x, ",", y, pointCircle);
          }
  
          function pointLineStart(x, y) {
              buffer.push("M", x, ",", y);
              stream.point = pointLine;
          }
  
          function pointLine(x, y) {
              buffer.push("L", x, ",", y);
          }
  
          function lineEnd() {
              stream.point = point;
          }
  
          function lineEndPolygon() {
              buffer.push("Z");
          }
  
          return stream;
      }
  
      function d3_geo_pathBufferCircle(radius) {
          return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
      }
  
      var d3_geo_pathCentroid = {
          point: d3_geo_pathCentroidPoint,
          lineStart: d3_geo_pathCentroidLineStart,
          lineEnd: d3_geo_pathCentroidLineEnd,
          polygonStart: function () {
              d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
          },
          polygonEnd: function () {
              d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
              d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
              d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
          }
      };
  
      function d3_geo_pathCentroidPoint(x, y) {
          d3_geo_centroidX0 += x;
          d3_geo_centroidY0 += y;
          ++d3_geo_centroidZ0;
      }
  
      function d3_geo_pathCentroidLineStart() {
          var x0, y0;
          d3_geo_pathCentroid.point = function (x, y) {
              d3_geo_pathCentroid.point = nextPoint;
              d3_geo_pathCentroidPoint(x0 = x, y0 = y);
          };
          function nextPoint(x, y) {
              var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
              d3_geo_centroidX1 += z * (x0 + x) / 2;
              d3_geo_centroidY1 += z * (y0 + y) / 2;
              d3_geo_centroidZ1 += z;
              d3_geo_pathCentroidPoint(x0 = x, y0 = y);
          }
      }
  
      function d3_geo_pathCentroidLineEnd() {
          d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      }
  
      function d3_geo_pathCentroidRingStart() {
          var x00, y00, x0, y0;
          d3_geo_pathCentroid.point = function (x, y) {
              d3_geo_pathCentroid.point = nextPoint;
              d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
          };
          function nextPoint(x, y) {
              var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
              d3_geo_centroidX1 += z * (x0 + x) / 2;
              d3_geo_centroidY1 += z * (y0 + y) / 2;
              d3_geo_centroidZ1 += z;
              z = y0 * x - x0 * y;
              d3_geo_centroidX2 += z * (x0 + x);
              d3_geo_centroidY2 += z * (y0 + y);
              d3_geo_centroidZ2 += z * 3;
              d3_geo_pathCentroidPoint(x0 = x, y0 = y);
          }
  
          d3_geo_pathCentroid.lineEnd = function () {
              nextPoint(x00, y00);
          };
      }
  
      function d3_geo_pathContext(context) {
          var pointRadius = 4.5;
          var stream = {
              point: point,
              lineStart: function () {
                  stream.point = pointLineStart;
              },
              lineEnd: lineEnd,
              polygonStart: function () {
                  stream.lineEnd = lineEndPolygon;
              },
              polygonEnd: function () {
                  stream.lineEnd = lineEnd;
                  stream.point = point;
              },
              pointRadius: function (_) {
                  pointRadius = _;
                  return stream;
              },
              result: d3_noop
          };
  
          function point(x, y) {
              context.moveTo(x + pointRadius, y);
              context.arc(x, y, pointRadius, 0, τ);
          }
  
          function pointLineStart(x, y) {
              context.moveTo(x, y);
              stream.point = pointLine;
          }
  
          function pointLine(x, y) {
              context.lineTo(x, y);
          }
  
          function lineEnd() {
              stream.point = point;
          }
  
          function lineEndPolygon() {
              context.closePath();
          }
  
          return stream;
      }
  
      function d3_geo_resample(project) {
          var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
  
          function resample(stream) {
              return (maxDepth ? resampleRecursive : resampleNone)(stream);
          }
  
          function resampleNone(stream) {
              return d3_geo_transformPoint(stream, function (x, y) {
                  x = project(x, y);
                  stream.point(x[0], x[1]);
              });
          }
  
          function resampleRecursive(stream) {
              var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
              var resample = {
                  point: point,
                  lineStart: lineStart,
                  lineEnd: lineEnd,
                  polygonStart: function () {
                      stream.polygonStart();
                      resample.lineStart = ringStart;
                  },
                  polygonEnd: function () {
                      stream.polygonEnd();
                      resample.lineStart = lineStart;
                  }
              };
  
              function point(x, y) {
                  x = project(x, y);
                  stream.point(x[0], x[1]);
              }
  
              function lineStart() {
                  x0 = NaN;
                  resample.point = linePoint;
                  stream.lineStart();
              }
  
              function linePoint(λ, φ) {
                  var c = d3_geo_cartesian([λ, φ]), p = project(λ, φ);
                  resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
                  stream.point(x0, y0);
              }
  
              function lineEnd() {
                  resample.point = point;
                  stream.lineEnd();
              }
  
              function ringStart() {
                  lineStart();
                  resample.point = ringPoint;
                  resample.lineEnd = ringEnd;
              }
  
              function ringPoint(λ, φ) {
                  linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
                  resample.point = linePoint;
              }
  
              function ringEnd() {
                  resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
                  resample.lineEnd = lineEnd;
                  lineEnd();
              }
  
              return resample;
          }
  
          function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
              var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
              if (d2 > 4 * δ2 && depth--) {
                  var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
                  if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
                      resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
                      stream.point(x2, y2);
                      resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
                  }
              }
          }
  
          resample.precision = function (_) {
              if (!arguments.length) return Math.sqrt(δ2);
              maxDepth = (δ2 = _ * _) > 0 && 16;
              return resample;
          };
          return resample;
      }
  
      d3.geo.path = function () {
          var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
  
          function path(object) {
              if (object) {
                  if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
                  if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
                  d3.geo.stream(object, cacheStream);
              }
              return contextStream.result();
          }
  
          path.area = function (object) {
              d3_geo_pathAreaSum = 0;
              d3.geo.stream(object, projectStream(d3_geo_pathArea));
              return d3_geo_pathAreaSum;
          };
          path.centroid = function (object) {
              d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
              d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
              return d3_geo_centroidZ2 ? [d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2] : d3_geo_centroidZ1 ? [d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1] : d3_geo_centroidZ0 ? [d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0] : [NaN, NaN];
          };
          path.bounds = function (object) {
              d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
              d3.geo.stream(object, projectStream(d3_geo_pathBounds));
              return [[d3_geo_pathBoundsX0, d3_geo_pathBoundsY0], [d3_geo_pathBoundsX1, d3_geo_pathBoundsY1]];
          };
          path.projection = function (_) {
              if (!arguments.length) return projection;
              projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
              return reset();
          };
          path.context = function (_) {
              if (!arguments.length) return context;
              contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
              if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
              return reset();
          };
          path.pointRadius = function (_) {
              if (!arguments.length) return pointRadius;
              pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
              return path;
          };
          function reset() {
              cacheStream = null;
              return path;
          }
  
          return path.projection(d3.geo.albersUsa()).context(null);
      };
      function d3_geo_pathProjectStream(project) {
          var resample = d3_geo_resample(function (x, y) {
              return project([x * d3_degrees, y * d3_degrees]);
          });
          return function (stream) {
              return d3_geo_projectionRadians(resample(stream));
          };
      }
  
      d3.geo.transform = function (methods) {
          return {
              stream: function (stream) {
                  var transform = new d3_geo_transform(stream);
                  for (var k in methods) transform[k] = methods[k];
                  return transform;
              }
          };
      };
      function d3_geo_transform(stream) {
          this.stream = stream;
      }
  
      d3_geo_transform.prototype = {
          point: function (x, y) {
              this.stream.point(x, y);
          },
          sphere: function () {
              this.stream.sphere();
          },
          lineStart: function () {
              this.stream.lineStart();
          },
          lineEnd: function () {
              this.stream.lineEnd();
          },
          polygonStart: function () {
              this.stream.polygonStart();
          },
          polygonEnd: function () {
              this.stream.polygonEnd();
          }
      };
      function d3_geo_transformPoint(stream, point) {
          return {
              point: point,
              sphere: function () {
                  stream.sphere();
              },
              lineStart: function () {
                  stream.lineStart();
              },
              lineEnd: function () {
                  stream.lineEnd();
              },
              polygonStart: function () {
                  stream.polygonStart();
              },
              polygonEnd: function () {
                  stream.polygonEnd();
              }
          };
      }
  
      d3.geo.projection = d3_geo_projection;
      d3.geo.projectionMutator = d3_geo_projectionMutator;
      function d3_geo_projection(project) {
          return d3_geo_projectionMutator(function () {
              return project;
          })();
      }
  
      function d3_geo_projectionMutator(projectAt) {
          var project, rotate, projectRotate, projectResample = d3_geo_resample(function (x, y) {
              x = project(x, y);
              return [x[0] * k + δx, δy - x[1] * k];
          }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
  
          function projection(point) {
              point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
              return [point[0] * k + δx, δy - point[1] * k];
          }
  
          function invert(point) {
              point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
              return point && [point[0] * d3_degrees, point[1] * d3_degrees];
          }
  
          projection.stream = function (output) {
              if (stream) stream.valid = false;
              stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
              stream.valid = true;
              return stream;
          };
          projection.clipAngle = function (_) {
              if (!arguments.length) return clipAngle;
              preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
              return invalidate();
          };
          projection.clipExtent = function (_) {
              if (!arguments.length) return clipExtent;
              clipExtent = _;
              postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
              return invalidate();
          };
          projection.scale = function (_) {
              if (!arguments.length) return k;
              k = +_;
              return reset();
          };
          projection.translate = function (_) {
              if (!arguments.length) return [x, y];
              x = +_[0];
              y = +_[1];
              return reset();
          };
          projection.center = function (_) {
              if (!arguments.length) return [λ * d3_degrees, φ * d3_degrees];
              λ = _[0] % 360 * d3_radians;
              φ = _[1] % 360 * d3_radians;
              return reset();
          };
          projection.rotate = function (_) {
              if (!arguments.length) return [δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees];
              δλ = _[0] % 360 * d3_radians;
              δφ = _[1] % 360 * d3_radians;
              δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
              return reset();
          };
          d3.rebind(projection, projectResample, "precision");
          function reset() {
              projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
              var center = project(λ, φ);
              δx = x - center[0] * k;
              δy = y + center[1] * k;
              return invalidate();
          }
  
          function invalidate() {
              if (stream) stream.valid = false, stream = null;
              return projection;
          }
  
          return function () {
              project = projectAt.apply(this, arguments);
              projection.invert = project.invert && invert;
              return reset();
          };
      }
  
      function d3_geo_projectionRadians(stream) {
          return d3_geo_transformPoint(stream, function (x, y) {
              stream.point(x * d3_radians, y * d3_radians);
          });
      }
  
      function d3_geo_equirectangular(λ, φ) {
          return [λ, φ];
      }
  
      (d3.geo.equirectangular = function () {
          return d3_geo_projection(d3_geo_equirectangular);
      }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
      d3.geo.rotation = function (rotate) {
          rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
          function forward(coordinates) {
              coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
              return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
          }
  
          forward.invert = function (coordinates) {
              coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
              return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
          };
          return forward;
      };
      function d3_geo_identityRotation(λ, φ) {
          return [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ];
      }
  
      d3_geo_identityRotation.invert = d3_geo_equirectangular;
      function d3_geo_rotation(δλ, δφ, δγ) {
          return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
      }
  
      function d3_geo_forwardRotationλ(δλ) {
          return function (λ, φ) {
              return λ += δλ, [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ];
          };
      }
  
      function d3_geo_rotationλ(δλ) {
          var rotation = d3_geo_forwardRotationλ(δλ);
          rotation.invert = d3_geo_forwardRotationλ(-δλ);
          return rotation;
      }
  
      function d3_geo_rotationφγ(δφ, δγ) {
          var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
  
          function rotation(λ, φ) {
              var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
              return [Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ)];
          }
  
          rotation.invert = function (λ, φ) {
              var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
              return [Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ)];
          };
          return rotation;
      }
  
      d3.geo.circle = function () {
          var origin = [0, 0], angle, precision = 6, interpolate;
  
          function circle() {
              var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
              interpolate(null, null, 1, {
                  point: function (x, y) {
                      ring.push(x = rotate(x, y));
                      x[0] *= d3_degrees, x[1] *= d3_degrees;
                  }
              });
              return {
                  type: "Polygon",
                  coordinates: [ring]
              };
          }
  
          circle.origin = function (x) {
              if (!arguments.length) return origin;
              origin = x;
              return circle;
          };
          circle.angle = function (x) {
              if (!arguments.length) return angle;
              interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
              return circle;
          };
          circle.precision = function (_) {
              if (!arguments.length) return precision;
              interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
              return circle;
          };
          return circle.angle(90);
      };
      function d3_geo_circleInterpolate(radius, precision) {
          var cr = Math.cos(radius), sr = Math.sin(radius);
          return function (from, to, direction, listener) {
              var step = direction * precision;
              if (from != null) {
                  from = d3_geo_circleAngle(cr, from);
                  to = d3_geo_circleAngle(cr, to);
                  if (direction > 0 ? from < to : from > to) from += direction * τ;
              } else {
                  from = radius + direction * τ;
                  to = radius - .5 * step;
              }
              for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
                  listener.point((point = d3_geo_spherical([cr, -sr * Math.cos(t), -sr * Math.sin(t)]))[0], point[1]);
              }
          };
      }
  
      function d3_geo_circleAngle(cr, point) {
          var a = d3_geo_cartesian(point);
          a[0] -= cr;
          d3_geo_cartesianNormalize(a);
          var angle = d3_acos(-a[1]);
          return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
      }
  
      d3.geo.distance = function (a, b) {
          var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
          return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
      };
      d3.geo.graticule = function () {
          var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
  
          function graticule() {
              return {
                  type: "MultiLineString",
                  coordinates: lines()
              };
          }
  
          function lines() {
              return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function (x) {
                  return abs(x % DX) > ε;
              }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function (y) {
                  return abs(y % DY) > ε;
              }).map(y));
          }
  
          graticule.lines = function () {
              return lines().map(function (coordinates) {
                  return {
                      type: "LineString",
                      coordinates: coordinates
                  };
              });
          };
          graticule.outline = function () {
              return {
                  type: "Polygon",
                  coordinates: [X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1))]
              };
          };
          graticule.extent = function (_) {
              if (!arguments.length) return graticule.minorExtent();
              return graticule.majorExtent(_).minorExtent(_);
          };
          graticule.majorExtent = function (_) {
              if (!arguments.length) return [[X0, Y0], [X1, Y1]];
              X0 = +_[0][0], X1 = +_[1][0];
              Y0 = +_[0][1], Y1 = +_[1][1];
              if (X0 > X1) _ = X0, X0 = X1, X1 = _;
              if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
              return graticule.precision(precision);
          };
          graticule.minorExtent = function (_) {
              if (!arguments.length) return [[x0, y0], [x1, y1]];
              x0 = +_[0][0], x1 = +_[1][0];
              y0 = +_[0][1], y1 = +_[1][1];
              if (x0 > x1) _ = x0, x0 = x1, x1 = _;
              if (y0 > y1) _ = y0, y0 = y1, y1 = _;
              return graticule.precision(precision);
          };
          graticule.step = function (_) {
              if (!arguments.length) return graticule.minorStep();
              return graticule.majorStep(_).minorStep(_);
          };
          graticule.majorStep = function (_) {
              if (!arguments.length) return [DX, DY];
              DX = +_[0], DY = +_[1];
              return graticule;
          };
          graticule.minorStep = function (_) {
              if (!arguments.length) return [dx, dy];
              dx = +_[0], dy = +_[1];
              return graticule;
          };
          graticule.precision = function (_) {
              if (!arguments.length) return precision;
              precision = +_;
              x = d3_geo_graticuleX(y0, y1, 90);
              y = d3_geo_graticuleY(x0, x1, precision);
              X = d3_geo_graticuleX(Y0, Y1, 90);
              Y = d3_geo_graticuleY(X0, X1, precision);
              return graticule;
          };
          return graticule.majorExtent([[-180, -90 + ε], [180, 90 - ε]]).minorExtent([[-180, -80 - ε], [180, 80 + ε]]);
      };
      function d3_geo_graticuleX(y0, y1, dy) {
          var y = d3.range(y0, y1 - ε, dy).concat(y1);
          return function (x) {
              return y.map(function (y) {
                  return [x, y];
              });
          };
      }
  
      function d3_geo_graticuleY(x0, x1, dx) {
          var x = d3.range(x0, x1 - ε, dx).concat(x1);
          return function (y) {
              return x.map(function (x) {
                  return [x, y];
              });
          };
      }
  
      function d3_source(d) {
          return d.source;
      }
  
      function d3_target(d) {
          return d.target;
      }
  
      d3.geo.greatArc = function () {
          var source = d3_source, source_, target = d3_target, target_;
  
          function greatArc() {
              return {
                  type: "LineString",
                  coordinates: [source_ || source.apply(this, arguments), target_ || target.apply(this, arguments)]
              };
          }
  
          greatArc.distance = function () {
              return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
          };
          greatArc.source = function (_) {
              if (!arguments.length) return source;
              source = _, source_ = typeof _ === "function" ? null : _;
              return greatArc;
          };
          greatArc.target = function (_) {
              if (!arguments.length) return target;
              target = _, target_ = typeof _ === "function" ? null : _;
              return greatArc;
          };
          greatArc.precision = function () {
              return arguments.length ? greatArc : 0;
          };
          return greatArc;
      };
      d3.geo.interpolate = function (source, target) {
          return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
      };
      function d3_geo_interpolate(x0, y0, x1, y1) {
          var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
          var interpolate = d ? function (t) {
              var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
              return [Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees];
          } : function () {
              return [x0 * d3_degrees, y0 * d3_degrees];
          };
          interpolate.distance = d;
          return interpolate;
      }
  
      d3.geo.length = function (object) {
          d3_geo_lengthSum = 0;
          d3.geo.stream(object, d3_geo_length);
          return d3_geo_lengthSum;
      };
      var d3_geo_lengthSum;
      var d3_geo_length = {
          sphere: d3_noop,
          point: d3_noop,
          lineStart: d3_geo_lengthLineStart,
          lineEnd: d3_noop,
          polygonStart: d3_noop,
          polygonEnd: d3_noop
      };
  
      function d3_geo_lengthLineStart() {
          var λ0, sinφ0, cosφ0;
          d3_geo_length.point = function (λ, φ) {
              λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
              d3_geo_length.point = nextPoint;
          };
          d3_geo_length.lineEnd = function () {
              d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
          };
          function nextPoint(λ, φ) {
              var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
              d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
              λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
          }
      }
  
      function d3_geo_azimuthal(scale, angle) {
          function azimuthal(λ, φ) {
              var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
              return [k * cosφ * Math.sin(λ), k * Math.sin(φ)];
          }
  
          azimuthal.invert = function (x, y) {
              var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
              return [Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ)];
          };
          return azimuthal;
      }
  
      var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function (cosλcosφ) {
          return Math.sqrt(2 / (1 + cosλcosφ));
      }, function (ρ) {
          return 2 * Math.asin(ρ / 2);
      });
      (d3.geo.azimuthalEqualArea = function () {
          return d3_geo_projection(d3_geo_azimuthalEqualArea);
      }).raw = d3_geo_azimuthalEqualArea;
      var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function (cosλcosφ) {
          var c = Math.acos(cosλcosφ);
          return c && c / Math.sin(c);
      }, d3_identity);
      (d3.geo.azimuthalEquidistant = function () {
          return d3_geo_projection(d3_geo_azimuthalEquidistant);
      }).raw = d3_geo_azimuthalEquidistant;
      function d3_geo_conicConformal(φ0, φ1) {
          var cosφ0 = Math.cos(φ0), t = function (φ) {
              return Math.tan(π / 4 + φ / 2);
          }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
          if (!n) return d3_geo_mercator;
          function forward(λ, φ) {
              if (F > 0) {
                  if (φ < -halfπ + ε) φ = -halfπ + ε;
              } else {
                  if (φ > halfπ - ε) φ = halfπ - ε;
              }
              var ρ = F / Math.pow(t(φ), n);
              return [ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ)];
          }
  
          forward.invert = function (x, y) {
              var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
              return [Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ];
          };
          return forward;
      }
  
      (d3.geo.conicConformal = function () {
          return d3_geo_conic(d3_geo_conicConformal);
      }).raw = d3_geo_conicConformal;
      function d3_geo_conicEquidistant(φ0, φ1) {
          var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
          if (abs(n) < ε) return d3_geo_equirectangular;
          function forward(λ, φ) {
              var ρ = G - φ;
              return [ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ)];
          }
  
          forward.invert = function (x, y) {
              var ρ0_y = G - y;
              return [Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y)];
          };
          return forward;
      }
  
      (d3.geo.conicEquidistant = function () {
          return d3_geo_conic(d3_geo_conicEquidistant);
      }).raw = d3_geo_conicEquidistant;
      var d3_geo_gnomonic = d3_geo_azimuthal(function (cosλcosφ) {
          return 1 / cosλcosφ;
      }, Math.atan);
      (d3.geo.gnomonic = function () {
          return d3_geo_projection(d3_geo_gnomonic);
      }).raw = d3_geo_gnomonic;
      function d3_geo_mercator(λ, φ) {
          return [λ, Math.log(Math.tan(π / 4 + φ / 2))];
      }
  
      d3_geo_mercator.invert = function (x, y) {
          return [x, 2 * Math.atan(Math.exp(y)) - halfπ];
      };
      function d3_geo_mercatorProjection(project) {
          var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
          m.scale = function () {
              var v = scale.apply(m, arguments);
              return v === m ? clipAuto ? m.clipExtent(null) : m : v;
          };
          m.translate = function () {
              var v = translate.apply(m, arguments);
              return v === m ? clipAuto ? m.clipExtent(null) : m : v;
          };
          m.clipExtent = function (_) {
              var v = clipExtent.apply(m, arguments);
              if (v === m) {
                  if (clipAuto = _ == null) {
                      var k = π * scale(), t = translate();
                      clipExtent([[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]]);
                  }
              } else if (clipAuto) {
                  v = null;
              }
              return v;
          };
          return m.clipExtent(null);
      }
  
      (d3.geo.mercator = function () {
          return d3_geo_mercatorProjection(d3_geo_mercator);
      }).raw = d3_geo_mercator;
      var d3_geo_orthographic = d3_geo_azimuthal(function () {
          return 1;
      }, Math.asin);
      (d3.geo.orthographic = function () {
          return d3_geo_projection(d3_geo_orthographic);
      }).raw = d3_geo_orthographic;
      var d3_geo_stereographic = d3_geo_azimuthal(function (cosλcosφ) {
          return 1 / (1 + cosλcosφ);
      }, function (ρ) {
          return 2 * Math.atan(ρ);
      });
      (d3.geo.stereographic = function () {
          return d3_geo_projection(d3_geo_stereographic);
      }).raw = d3_geo_stereographic;
      function d3_geo_transverseMercator(λ, φ) {
          return [Math.log(Math.tan(π / 4 + φ / 2)), -λ];
      }
  
      d3_geo_transverseMercator.invert = function (x, y) {
          return [-y, 2 * Math.atan(Math.exp(x)) - halfπ];
      };
      (d3.geo.transverseMercator = function () {
          var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
          projection.center = function (_) {
              return _ ? center([-_[1], _[0]]) : (_ = center(), [_[1], -_[0]]);
          };
          projection.rotate = function (_) {
              return _ ? rotate([_[0], _[1], _.length > 2 ? _[2] + 90 : 90]) : (_ = rotate(),
                  [_[0], _[1], _[2] - 90]);
          };
          return rotate([0, 0, 90]);
      }).raw = d3_geo_transverseMercator;
      d3.geom = {};
      function d3_geom_pointX(d) {
          return d[0];
      }
  
      function d3_geom_pointY(d) {
          return d[1];
      }
  
      d3.geom.hull = function (vertices) {
          var x = d3_geom_pointX, y = d3_geom_pointY;
          if (arguments.length) return hull(vertices);
          function hull(data) {
              if (data.length < 3) return [];
              var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
              for (i = 0; i < n; i++) {
                  points.push([+fx.call(this, data[i], i), +fy.call(this, data[i], i), i]);
              }
              points.sort(d3_geom_hullOrder);
              for (i = 0; i < n; i++) flippedPoints.push([points[i][0], -points[i][1]]);
              var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
              var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
              for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
              for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
              return polygon;
          }
  
          hull.x = function (_) {
              return arguments.length ? (x = _, hull) : x;
          };
          hull.y = function (_) {
              return arguments.length ? (y = _, hull) : y;
          };
          return hull;
      };
      function d3_geom_hullUpper(points) {
          var n = points.length, hull = [0, 1], hs = 2;
          for (var i = 2; i < n; i++) {
              while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
              hull[hs++] = i;
          }
          return hull.slice(0, hs);
      }
  
      function d3_geom_hullOrder(a, b) {
          return a[0] - b[0] || a[1] - b[1];
      }
  
      d3.geom.polygon = function (coordinates) {
          d3_subclass(coordinates, d3_geom_polygonPrototype);
          return coordinates;
      };
      var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
      d3_geom_polygonPrototype.area = function () {
          var i = -1, n = this.length, a, b = this[n - 1], area = 0;
          while (++i < n) {
              a = b;
              b = this[i];
              area += a[1] * b[0] - a[0] * b[1];
          }
          return area * .5;
      };
      d3_geom_polygonPrototype.centroid = function (k) {
          var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
          if (!arguments.length) k = -1 / (6 * this.area());
          while (++i < n) {
              a = b;
              b = this[i];
              c = a[0] * b[1] - b[0] * a[1];
              x += (a[0] + b[0]) * c;
              y += (a[1] + b[1]) * c;
          }
          return [x * k, y * k];
      };
      d3_geom_polygonPrototype.clip = function (subject) {
          var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
          while (++i < n) {
              input = subject.slice();
              subject.length = 0;
              b = this[i];
              c = input[(m = input.length - closed) - 1];
              j = -1;
              while (++j < m) {
                  d = input[j];
                  if (d3_geom_polygonInside(d, a, b)) {
                      if (!d3_geom_polygonInside(c, a, b)) {
                          subject.push(d3_geom_polygonIntersect(c, d, a, b));
                      }
                      subject.push(d);
                  } else if (d3_geom_polygonInside(c, a, b)) {
                      subject.push(d3_geom_polygonIntersect(c, d, a, b));
                  }
                  c = d;
              }
              if (closed) subject.push(subject[0]);
              a = b;
          }
          return subject;
      };
      function d3_geom_polygonInside(p, a, b) {
          return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
      }
  
      function d3_geom_polygonIntersect(c, d, a, b) {
          var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
          return [x1 + ua * x21, y1 + ua * y21];
      }
  
      function d3_geom_polygonClosed(coordinates) {
          var a = coordinates[0], b = coordinates[coordinates.length - 1];
          return !(a[0] - b[0] || a[1] - b[1]);
      }
  
      var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  
      function d3_geom_voronoiBeach() {
          d3_geom_voronoiRedBlackNode(this);
          this.edge = this.site = this.circle = null;
      }
  
      function d3_geom_voronoiCreateBeach(site) {
          var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
          beach.site = site;
          return beach;
      }
  
      function d3_geom_voronoiDetachBeach(beach) {
          d3_geom_voronoiDetachCircle(beach);
          d3_geom_voronoiBeaches.remove(beach);
          d3_geom_voronoiBeachPool.push(beach);
          d3_geom_voronoiRedBlackNode(beach);
      }
  
      function d3_geom_voronoiRemoveBeach(beach) {
          var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
              x: x,
              y: y
          }, previous = beach.P, next = beach.N, disappearing = [beach];
          d3_geom_voronoiDetachBeach(beach);
          var lArc = previous;
          while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
              previous = lArc.P;
              disappearing.unshift(lArc);
              d3_geom_voronoiDetachBeach(lArc);
              lArc = previous;
          }
          disappearing.unshift(lArc);
          d3_geom_voronoiDetachCircle(lArc);
          var rArc = next;
          while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
              next = rArc.N;
              disappearing.push(rArc);
              d3_geom_voronoiDetachBeach(rArc);
              rArc = next;
          }
          disappearing.push(rArc);
          d3_geom_voronoiDetachCircle(rArc);
          var nArcs = disappearing.length, iArc;
          for (iArc = 1; iArc < nArcs; ++iArc) {
              rArc = disappearing[iArc];
              lArc = disappearing[iArc - 1];
              d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
          }
          lArc = disappearing[0];
          rArc = disappearing[nArcs - 1];
          rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
          d3_geom_voronoiAttachCircle(lArc);
          d3_geom_voronoiAttachCircle(rArc);
      }
  
      function d3_geom_voronoiAddBeach(site) {
          var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
          while (node) {
              dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
              if (dxl > ε) node = node.L; else {
                  dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
                  if (dxr > ε) {
                      if (!node.R) {
                          lArc = node;
                          break;
                      }
                      node = node.R;
                  } else {
                      if (dxl > -ε) {
                          lArc = node.P;
                          rArc = node;
                      } else if (dxr > -ε) {
                          lArc = node;
                          rArc = node.N;
                      } else {
                          lArc = rArc = node;
                      }
                      break;
                  }
              }
          }
          var newArc = d3_geom_voronoiCreateBeach(site);
          d3_geom_voronoiBeaches.insert(lArc, newArc);
          if (!lArc && !rArc) return;
          if (lArc === rArc) {
              d3_geom_voronoiDetachCircle(lArc);
              rArc = d3_geom_voronoiCreateBeach(lArc.site);
              d3_geom_voronoiBeaches.insert(newArc, rArc);
              newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
              d3_geom_voronoiAttachCircle(lArc);
              d3_geom_voronoiAttachCircle(rArc);
              return;
          }
          if (!rArc) {
              newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
              return;
          }
          d3_geom_voronoiDetachCircle(lArc);
          d3_geom_voronoiDetachCircle(rArc);
          var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
              x: (cy * hb - by * hc) / d + ax,
              y: (bx * hc - cx * hb) / d + ay
          };
          d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
          newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
          rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
          d3_geom_voronoiAttachCircle(lArc);
          d3_geom_voronoiAttachCircle(rArc);
      }
  
      function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
          var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
          if (!pby2) return rfocx;
          var lArc = arc.P;
          if (!lArc) return -Infinity;
          site = lArc.site;
          var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
          if (!plby2) return lfocx;
          var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
          if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
          return (rfocx + lfocx) / 2;
      }
  
      function d3_geom_voronoiRightBreakPoint(arc, directrix) {
          var rArc = arc.N;
          if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
          var site = arc.site;
          return site.y === directrix ? site.x : Infinity;
      }
  
      function d3_geom_voronoiCell(site) {
          this.site = site;
          this.edges = [];
      }
  
      d3_geom_voronoiCell.prototype.prepare = function () {
          var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
          while (iHalfEdge--) {
              edge = halfEdges[iHalfEdge].edge;
              if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
          }
          halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
          return halfEdges.length;
      };
      function d3_geom_voronoiCloseCells(extent) {
          var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
          while (iCell--) {
              cell = cells[iCell];
              if (!cell || !cell.prepare()) continue;
              halfEdges = cell.edges;
              nHalfEdges = halfEdges.length;
              iHalfEdge = 0;
              while (iHalfEdge < nHalfEdges) {
                  end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
                  start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
                  if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
                      halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
                          x: x0,
                          y: abs(x2 - x0) < ε ? y2 : y1
                      } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
                          x: abs(y2 - y1) < ε ? x2 : x1,
                          y: y1
                      } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
                          x: x1,
                          y: abs(x2 - x1) < ε ? y2 : y0
                      } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
                          x: abs(y2 - y0) < ε ? x2 : x0,
                          y: y0
                      } : null), cell.site, null));
                      ++nHalfEdges;
                  }
              }
          }
      }
  
      function d3_geom_voronoiHalfEdgeOrder(a, b) {
          return b.angle - a.angle;
      }
  
      function d3_geom_voronoiCircle() {
          d3_geom_voronoiRedBlackNode(this);
          this.x = this.y = this.arc = this.site = this.cy = null;
      }
  
      function d3_geom_voronoiAttachCircle(arc) {
          var lArc = arc.P, rArc = arc.N;
          if (!lArc || !rArc) return;
          var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
          if (lSite === rSite) return;
          var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
          var d = 2 * (ax * cy - ay * cx);
          if (d >= -ε2) return;
          var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
          var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
          circle.arc = arc;
          circle.site = cSite;
          circle.x = x + bx;
          circle.y = cy + Math.sqrt(x * x + y * y);
          circle.cy = cy;
          arc.circle = circle;
          var before = null, node = d3_geom_voronoiCircles._;
          while (node) {
              if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
                  if (node.L) node = node.L; else {
                      before = node.P;
                      break;
                  }
              } else {
                  if (node.R) node = node.R; else {
                      before = node;
                      break;
                  }
              }
          }
          d3_geom_voronoiCircles.insert(before, circle);
          if (!before) d3_geom_voronoiFirstCircle = circle;
      }
  
      function d3_geom_voronoiDetachCircle(arc) {
          var circle = arc.circle;
          if (circle) {
              if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
              d3_geom_voronoiCircles.remove(circle);
              d3_geom_voronoiCirclePool.push(circle);
              d3_geom_voronoiRedBlackNode(circle);
              arc.circle = null;
          }
      }
  
      function d3_geom_voronoiClipEdges(extent) {
          var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
          while (i--) {
              e = edges[i];
              if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
                  e.a = e.b = null;
                  edges.splice(i, 1);
              }
          }
      }
  
      function d3_geom_voronoiConnectEdge(edge, extent) {
          var vb = edge.b;
          if (vb) return true;
          var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
          if (ry === ly) {
              if (fx < x0 || fx >= x1) return;
              if (lx > rx) {
                  if (!va) va = {
                      x: fx,
                      y: y0
                  }; else if (va.y >= y1) return;
                  vb = {
                      x: fx,
                      y: y1
                  };
              } else {
                  if (!va) va = {
                      x: fx,
                      y: y1
                  }; else if (va.y < y0) return;
                  vb = {
                      x: fx,
                      y: y0
                  };
              }
          } else {
              fm = (lx - rx) / (ry - ly);
              fb = fy - fm * fx;
              if (fm < -1 || fm > 1) {
                  if (lx > rx) {
                      if (!va) va = {
                          x: (y0 - fb) / fm,
                          y: y0
                      }; else if (va.y >= y1) return;
                      vb = {
                          x: (y1 - fb) / fm,
                          y: y1
                      };
                  } else {
                      if (!va) va = {
                          x: (y1 - fb) / fm,
                          y: y1
                      }; else if (va.y < y0) return;
                      vb = {
                          x: (y0 - fb) / fm,
                          y: y0
                      };
                  }
              } else {
                  if (ly < ry) {
                      if (!va) va = {
                          x: x0,
                          y: fm * x0 + fb
                      }; else if (va.x >= x1) return;
                      vb = {
                          x: x1,
                          y: fm * x1 + fb
                      };
                  } else {
                      if (!va) va = {
                          x: x1,
                          y: fm * x1 + fb
                      }; else if (va.x < x0) return;
                      vb = {
                          x: x0,
                          y: fm * x0 + fb
                      };
                  }
              }
          }
          edge.a = va;
          edge.b = vb;
          return true;
      }
  
      function d3_geom_voronoiEdge(lSite, rSite) {
          this.l = lSite;
          this.r = rSite;
          this.a = this.b = null;
      }
  
      function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
          var edge = new d3_geom_voronoiEdge(lSite, rSite);
          d3_geom_voronoiEdges.push(edge);
          if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
          if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
          d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
          d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
          return edge;
      }
  
      function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
          var edge = new d3_geom_voronoiEdge(lSite, null);
          edge.a = va;
          edge.b = vb;
          d3_geom_voronoiEdges.push(edge);
          return edge;
      }
  
      function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
          if (!edge.a && !edge.b) {
              edge.a = vertex;
              edge.l = lSite;
              edge.r = rSite;
          } else if (edge.l === rSite) {
              edge.b = vertex;
          } else {
              edge.a = vertex;
          }
      }
  
      function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
          var va = edge.a, vb = edge.b;
          this.edge = edge;
          this.site = lSite;
          this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
      }
  
      d3_geom_voronoiHalfEdge.prototype = {
          start: function () {
              return this.edge.l === this.site ? this.edge.a : this.edge.b;
          },
          end: function () {
              return this.edge.l === this.site ? this.edge.b : this.edge.a;
          }
      };
      function d3_geom_voronoiRedBlackTree() {
          this._ = null;
      }
  
      function d3_geom_voronoiRedBlackNode(node) {
          node.U = node.C = node.L = node.R = node.P = node.N = null;
      }
  
      d3_geom_voronoiRedBlackTree.prototype = {
          insert: function (after, node) {
              var parent, grandpa, uncle;
              if (after) {
                  node.P = after;
                  node.N = after.N;
                  if (after.N) after.N.P = node;
                  after.N = node;
                  if (after.R) {
                      after = after.R;
                      while (after.L) after = after.L;
                      after.L = node;
                  } else {
                      after.R = node;
                  }
                  parent = after;
              } else if (this._) {
                  after = d3_geom_voronoiRedBlackFirst(this._);
                  node.P = null;
                  node.N = after;
                  after.P = after.L = node;
                  parent = after;
              } else {
                  node.P = node.N = null;
                  this._ = node;
                  parent = null;
              }
              node.L = node.R = null;
              node.U = parent;
              node.C = true;
              after = node;
              while (parent && parent.C) {
                  grandpa = parent.U;
                  if (parent === grandpa.L) {
                      uncle = grandpa.R;
                      if (uncle && uncle.C) {
                          parent.C = uncle.C = false;
                          grandpa.C = true;
                          after = grandpa;
                      } else {
                          if (after === parent.R) {
                              d3_geom_voronoiRedBlackRotateLeft(this, parent);
                              after = parent;
                              parent = after.U;
                          }
                          parent.C = false;
                          grandpa.C = true;
                          d3_geom_voronoiRedBlackRotateRight(this, grandpa);
                      }
                  } else {
                      uncle = grandpa.L;
                      if (uncle && uncle.C) {
                          parent.C = uncle.C = false;
                          grandpa.C = true;
                          after = grandpa;
                      } else {
                          if (after === parent.L) {
                              d3_geom_voronoiRedBlackRotateRight(this, parent);
                              after = parent;
                              parent = after.U;
                          }
                          parent.C = false;
                          grandpa.C = true;
                          d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
                      }
                  }
                  parent = after.U;
              }
              this._.C = false;
          },
          remove: function (node) {
              if (node.N) node.N.P = node.P;
              if (node.P) node.P.N = node.N;
              node.N = node.P = null;
              var parent = node.U, sibling, left = node.L, right = node.R, next, red;
              if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
              if (parent) {
                  if (parent.L === node) parent.L = next; else parent.R = next;
              } else {
                  this._ = next;
              }
              if (left && right) {
                  red = next.C;
                  next.C = node.C;
                  next.L = left;
                  left.U = next;
                  if (next !== right) {
                      parent = next.U;
                      next.U = node.U;
                      node = next.R;
                      parent.L = node;
                      next.R = right;
                      right.U = next;
                  } else {
                      next.U = parent;
                      parent = next;
                      node = next.R;
                  }
              } else {
                  red = node.C;
                  node = next;
              }
              if (node) node.U = parent;
              if (red) return;
              if (node && node.C) {
                  node.C = false;
                  return;
              }
              do {
                  if (node === this._) break;
                  if (node === parent.L) {
                      sibling = parent.R;
                      if (sibling.C) {
                          sibling.C = false;
                          parent.C = true;
                          d3_geom_voronoiRedBlackRotateLeft(this, parent);
                          sibling = parent.R;
                      }
                      if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
                          if (!sibling.R || !sibling.R.C) {
                              sibling.L.C = false;
                              sibling.C = true;
                              d3_geom_voronoiRedBlackRotateRight(this, sibling);
                              sibling = parent.R;
                          }
                          sibling.C = parent.C;
                          parent.C = sibling.R.C = false;
                          d3_geom_voronoiRedBlackRotateLeft(this, parent);
                          node = this._;
                          break;
                      }
                  } else {
                      sibling = parent.L;
                      if (sibling.C) {
                          sibling.C = false;
                          parent.C = true;
                          d3_geom_voronoiRedBlackRotateRight(this, parent);
                          sibling = parent.L;
                      }
                      if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
                          if (!sibling.L || !sibling.L.C) {
                              sibling.R.C = false;
                              sibling.C = true;
                              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
                              sibling = parent.L;
                          }
                          sibling.C = parent.C;
                          parent.C = sibling.L.C = false;
                          d3_geom_voronoiRedBlackRotateRight(this, parent);
                          node = this._;
                          break;
                      }
                  }
                  sibling.C = true;
                  node = parent;
                  parent = parent.U;
              } while (!node.C);
              if (node) node.C = false;
          }
      };
      function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
          var p = node, q = node.R, parent = p.U;
          if (parent) {
              if (parent.L === p) parent.L = q; else parent.R = q;
          } else {
              tree._ = q;
          }
          q.U = parent;
          p.U = q;
          p.R = q.L;
          if (p.R) p.R.U = p;
          q.L = p;
      }
  
      function d3_geom_voronoiRedBlackRotateRight(tree, node) {
          var p = node, q = node.L, parent = p.U;
          if (parent) {
              if (parent.L === p) parent.L = q; else parent.R = q;
          } else {
              tree._ = q;
          }
          q.U = parent;
          p.U = q;
          p.L = q.R;
          if (p.L) p.L.U = p;
          q.R = p;
      }
  
      function d3_geom_voronoiRedBlackFirst(node) {
          while (node.L) node = node.L;
          return node;
      }
  
      function d3_geom_voronoi(sites, bbox) {
          var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
          d3_geom_voronoiEdges = [];
          d3_geom_voronoiCells = new Array(sites.length);
          d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
          d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
          while (true) {
              circle = d3_geom_voronoiFirstCircle;
              if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
                  if (site.x !== x0 || site.y !== y0) {
                      d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
                      d3_geom_voronoiAddBeach(site);
                      x0 = site.x, y0 = site.y;
                  }
                  site = sites.pop();
              } else if (circle) {
                  d3_geom_voronoiRemoveBeach(circle.arc);
              } else {
                  break;
              }
          }
          if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
          var diagram = {
              cells: d3_geom_voronoiCells,
              edges: d3_geom_voronoiEdges
          };
          d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
          return diagram;
      }
  
      function d3_geom_voronoiVertexOrder(a, b) {
          return b.y - a.y || b.x - a.x;
      }
  
      d3.geom.voronoi = function (points) {
          var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
          if (points) return voronoi(points);
          function voronoi(data) {
              var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
              d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function (cell, i) {
                  var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function (e) {
                      var s = e.start();
                      return [s.x, s.y];
                  }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [[x0, y1], [x1, y1], [x1, y0], [x0, y0]] : [];
                  polygon.point = data[i];
              });
              return polygons;
          }
  
          function sites(data) {
              return data.map(function (d, i) {
                  return {
                      x: Math.round(fx(d, i) / ε) * ε,
                      y: Math.round(fy(d, i) / ε) * ε,
                      i: i
                  };
              });
          }
  
          voronoi.links = function (data) {
              return d3_geom_voronoi(sites(data)).edges.filter(function (edge) {
                  return edge.l && edge.r;
              }).map(function (edge) {
                  return {
                      source: data[edge.l.i],
                      target: data[edge.r.i]
                  };
              });
          };
          voronoi.triangles = function (data) {
              var triangles = [];
              d3_geom_voronoi(sites(data)).cells.forEach(function (cell, i) {
                  var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
                  while (++j < m) {
                      e0 = e1;
                      s0 = s1;
                      e1 = edges[j].edge;
                      s1 = e1.l === site ? e1.r : e1.l;
                      if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
                          triangles.push([data[i], data[s0.i], data[s1.i]]);
                      }
                  }
              });
              return triangles;
          };
          voronoi.x = function (_) {
              return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
          };
          voronoi.y = function (_) {
              return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
          };
          voronoi.clipExtent = function (_) {
              if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
              clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
              return voronoi;
          };
          voronoi.size = function (_) {
              if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
              return voronoi.clipExtent(_ && [[0, 0], _]);
          };
          return voronoi;
      };
      var d3_geom_voronoiClipExtent = [[-1e6, -1e6], [1e6, 1e6]];
  
      function d3_geom_voronoiTriangleArea(a, b, c) {
          return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
      }
  
      d3.geom.delaunay = function (vertices) {
          return d3.geom.voronoi().triangles(vertices);
      };
      d3.geom.quadtree = function (points, x1, y1, x2, y2) {
          var x = d3_geom_pointX, y = d3_geom_pointY, compat;
          if (compat = arguments.length) {
              x = d3_geom_quadtreeCompatX;
              y = d3_geom_quadtreeCompatY;
              if (compat === 3) {
                  y2 = y1;
                  x2 = x1;
                  y1 = x1 = 0;
              }
              return quadtree(points);
          }
          function quadtree(data) {
              var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
              if (x1 != null) {
                  x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
              } else {
                  x2_ = y2_ = -(x1_ = y1_ = Infinity);
                  xs = [], ys = [];
                  n = data.length;
                  if (compat) for (i = 0; i < n; ++i) {
                      d = data[i];
                      if (d.x < x1_) x1_ = d.x;
                      if (d.y < y1_) y1_ = d.y;
                      if (d.x > x2_) x2_ = d.x;
                      if (d.y > y2_) y2_ = d.y;
                      xs.push(d.x);
                      ys.push(d.y);
                  } else for (i = 0; i < n; ++i) {
                      var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
                      if (x_ < x1_) x1_ = x_;
                      if (y_ < y1_) y1_ = y_;
                      if (x_ > x2_) x2_ = x_;
                      if (y_ > y2_) y2_ = y_;
                      xs.push(x_);
                      ys.push(y_);
                  }
              }
              var dx = x2_ - x1_, dy = y2_ - y1_;
              if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
              function insert(n, d, x, y, x1, y1, x2, y2) {
                  if (isNaN(x) || isNaN(y)) return;
                  if (n.leaf) {
                      var nx = n.x, ny = n.y;
                      if (nx != null) {
                          if (abs(nx - x) + abs(ny - y) < .01) {
                              insertChild(n, d, x, y, x1, y1, x2, y2);
                          } else {
                              var nPoint = n.point;
                              n.x = n.y = n.point = null;
                              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
                              insertChild(n, d, x, y, x1, y1, x2, y2);
                          }
                      } else {
                          n.x = x, n.y = y, n.point = d;
                      }
                  } else {
                      insertChild(n, d, x, y, x1, y1, x2, y2);
                  }
              }
  
              function insertChild(n, d, x, y, x1, y1, x2, y2) {
                  var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
                  n.leaf = false;
                  n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
                  if (right) x1 = xm; else x2 = xm;
                  if (below) y1 = ym; else y2 = ym;
                  insert(n, d, x, y, x1, y1, x2, y2);
              }
  
              var root = d3_geom_quadtreeNode();
              root.add = function (d) {
                  insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
              };
              root.visit = function (f) {
                  d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
              };
              root.find = function (point) {
                  return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
              };
              i = -1;
              if (x1 == null) {
                  while (++i < n) {
                      insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
                  }
                  --i;
              } else data.forEach(root.add);
              xs = ys = data = d = null;
              return root;
          }
  
          quadtree.x = function (_) {
              return arguments.length ? (x = _, quadtree) : x;
          };
          quadtree.y = function (_) {
              return arguments.length ? (y = _, quadtree) : y;
          };
          quadtree.extent = function (_) {
              if (!arguments.length) return x1 == null ? null : [[x1, y1], [x2, y2]];
              if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0],
                  y2 = +_[1][1];
              return quadtree;
          };
          quadtree.size = function (_) {
              if (!arguments.length) return x1 == null ? null : [x2 - x1, y2 - y1];
              if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
              return quadtree;
          };
          return quadtree;
      };
      function d3_geom_quadtreeCompatX(d) {
          return d.x;
      }
  
      function d3_geom_quadtreeCompatY(d) {
          return d.y;
      }
  
      function d3_geom_quadtreeNode() {
          return {
              leaf: true,
              nodes: [],
              point: null,
              x: null,
              y: null
          };
      }
  
      function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
          if (!f(node, x1, y1, x2, y2)) {
              var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
              if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
              if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
              if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
              if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
          }
      }
  
      function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
          var minDistance2 = Infinity, closestPoint;
          (function find(node, x1, y1, x2, y2) {
              if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
              if (point = node.point) {
                  var point, dx = x - point[0], dy = y - point[1], distance2 = dx * dx + dy * dy;
                  if (distance2 < minDistance2) {
                      var distance = Math.sqrt(minDistance2 = distance2);
                      x0 = x - distance, y0 = y - distance;
                      x3 = x + distance, y3 = y + distance;
                      closestPoint = point;
                  }
              }
              var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
              for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
                  if (node = children[i & 3]) switch (i & 3) {
                      case 0:
                          find(node, x1, y1, xm, ym);
                          break;
  
                      case 1:
                          find(node, xm, y1, x2, ym);
                          break;
  
                      case 2:
                          find(node, x1, ym, xm, y2);
                          break;
  
                      case 3:
                          find(node, xm, ym, x2, y2);
                          break;
                  }
              }
          })(root, x0, y0, x3, y3);
          return closestPoint;
      }
  
      d3.interpolateRgb = d3_interpolateRgb;
      function d3_interpolateRgb(a, b) {
          a = d3.rgb(a);
          b = d3.rgb(b);
          var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
          return function (t) {
              return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
          };
      }
  
      d3.interpolateObject = d3_interpolateObject;
      function d3_interpolateObject(a, b) {
          var i = {}, c = {}, k;
          for (k in a) {
              if (k in b) {
                  i[k] = d3_interpolate(a[k], b[k]);
              } else {
                  c[k] = a[k];
              }
          }
          for (k in b) {
              if (!(k in a)) {
                  c[k] = b[k];
              }
          }
          return function (t) {
              for (k in i) c[k] = i[k](t);
              return c;
          };
      }
  
      d3.interpolateNumber = d3_interpolateNumber;
      function d3_interpolateNumber(a, b) {
          a = +a, b = +b;
          return function (t) {
              return a * (1 - t) + b * t;
          };
      }
  
      d3.interpolateString = d3_interpolateString;
      function d3_interpolateString(a, b) {
          var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
          a = a + "", b = b + "";
          while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
              if ((bs = bm.index) > bi) {
                  bs = b.slice(bi, bs);
                  if (s[i]) s[i] += bs; else s[++i] = bs;
              }
              if ((am = am[0]) === (bm = bm[0])) {
                  if (s[i]) s[i] += bm; else s[++i] = bm;
              } else {
                  s[++i] = null;
                  q.push({
                      i: i,
                      x: d3_interpolateNumber(am, bm)
                  });
              }
              bi = d3_interpolate_numberB.lastIndex;
          }
          if (bi < b.length) {
              bs = b.slice(bi);
              if (s[i]) s[i] += bs; else s[++i] = bs;
          }
          return s.length < 2 ? q[0] ? (b = q[0].x, function (t) {
              return b(t) + "";
          }) : function () {
              return b;
          } : (b = q.length, function (t) {
              for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
              return s.join("");
          });
      }
  
      var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
      d3.interpolate = d3_interpolate;
      function d3_interpolate(a, b) {
          var i = d3.interpolators.length, f;
          while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
          return f;
      }
  
      d3.interpolators = [function (a, b) {
          var t = typeof b;
          return (t === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
      }];
      d3.interpolateArray = d3_interpolateArray;
      function d3_interpolateArray(a, b) {
          var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
          for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
          for (; i < na; ++i) c[i] = a[i];
          for (; i < nb; ++i) c[i] = b[i];
          return function (t) {
              for (i = 0; i < n0; ++i) c[i] = x[i](t);
              return c;
          };
      }
  
      var d3_ease_default = function () {
          return d3_identity;
      };
      var d3_ease = d3.map({
          linear: d3_ease_default,
          poly: d3_ease_poly,
          quad: function () {
              return d3_ease_quad;
          },
          cubic: function () {
              return d3_ease_cubic;
          },
          sin: function () {
              return d3_ease_sin;
          },
          exp: function () {
              return d3_ease_exp;
          },
          circle: function () {
              return d3_ease_circle;
          },
          elastic: d3_ease_elastic,
          back: d3_ease_back,
          bounce: function () {
              return d3_ease_bounce;
          }
      });
      var d3_ease_mode = d3.map({
          "in": d3_identity,
          out: d3_ease_reverse,
          "in-out": d3_ease_reflect,
          "out-in": function (f) {
              return d3_ease_reflect(d3_ease_reverse(f));
          }
      });
      d3.ease = function (name) {
          var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
          t = d3_ease.get(t) || d3_ease_default;
          m = d3_ease_mode.get(m) || d3_identity;
          return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
      };
      function d3_ease_clamp(f) {
          return function (t) {
              return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
          };
      }
  
      function d3_ease_reverse(f) {
          return function (t) {
              return 1 - f(1 - t);
          };
      }
  
      function d3_ease_reflect(f) {
          return function (t) {
              return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
          };
      }
  
      function d3_ease_quad(t) {
          return t * t;
      }
  
      function d3_ease_cubic(t) {
          return t * t * t;
      }
  
      function d3_ease_cubicInOut(t) {
          if (t <= 0) return 0;
          if (t >= 1) return 1;
          var t2 = t * t, t3 = t2 * t;
          return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
      }
  
      function d3_ease_poly(e) {
          return function (t) {
              return Math.pow(t, e);
          };
      }
  
      function d3_ease_sin(t) {
          return 1 - Math.cos(t * halfπ);
      }
  
      function d3_ease_exp(t) {
          return Math.pow(2, 10 * (t - 1));
      }
  
      function d3_ease_circle(t) {
          return 1 - Math.sqrt(1 - t * t);
      }
  
      function d3_ease_elastic(a, p) {
          var s;
          if (arguments.length < 2) p = .45;
          if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
          return function (t) {
              return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
          };
      }
  
      function d3_ease_back(s) {
          if (!s) s = 1.70158;
          return function (t) {
              return t * t * ((s + 1) * t - s);
          };
      }
  
      function d3_ease_bounce(t) {
          return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
      }
  
      d3.interpolateHcl = d3_interpolateHcl;
      function d3_interpolateHcl(a, b) {
          a = d3.hcl(a);
          b = d3.hcl(b);
          var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
          if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
          if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
          return function (t) {
              return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
          };
      }
  
      d3.interpolateHsl = d3_interpolateHsl;
      function d3_interpolateHsl(a, b) {
          a = d3.hsl(a);
          b = d3.hsl(b);
          var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
          if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
          if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
          return function (t) {
              return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
          };
      }
  
      d3.interpolateLab = d3_interpolateLab;
      function d3_interpolateLab(a, b) {
          a = d3.lab(a);
          b = d3.lab(b);
          var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
          return function (t) {
              return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
          };
      }
  
      d3.interpolateRound = d3_interpolateRound;
      function d3_interpolateRound(a, b) {
          b -= a;
          return function (t) {
              return Math.round(a + b * t);
          };
      }
  
      d3.transform = function (string) {
          var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
          return (d3.transform = function (string) {
              if (string != null) {
                  g.setAttribute("transform", string);
                  var t = g.transform.baseVal.consolidate();
              }
              return new d3_transform(t ? t.matrix : d3_transformIdentity);
          })(string);
      };
      function d3_transform(m) {
          var r0 = [m.a, m.b], r1 = [m.c, m.d], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
          if (r0[0] * r1[1] < r1[0] * r0[1]) {
              r0[0] *= -1;
              r0[1] *= -1;
              kx *= -1;
              kz *= -1;
          }
          this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
          this.translate = [m.e, m.f];
          this.scale = [kx, ky];
          this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
      }
  
      d3_transform.prototype.toString = function () {
          return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
      };
      function d3_transformDot(a, b) {
          return a[0] * b[0] + a[1] * b[1];
      }
  
      function d3_transformNormalize(a) {
          var k = Math.sqrt(d3_transformDot(a, a));
          if (k) {
              a[0] /= k;
              a[1] /= k;
          }
          return k;
      }
  
      function d3_transformCombine(a, b, k) {
          a[0] += k * b[0];
          a[1] += k * b[1];
          return a;
      }
  
      var d3_transformIdentity = {
          a: 1,
          b: 0,
          c: 0,
          d: 1,
          e: 0,
          f: 0
      };
      d3.interpolateTransform = d3_interpolateTransform;
      function d3_interpolateTransform(a, b) {
          var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
          if (ta[0] != tb[0] || ta[1] != tb[1]) {
              s.push("translate(", null, ",", null, ")");
              q.push({
                  i: 1,
                  x: d3_interpolateNumber(ta[0], tb[0])
              }, {
                  i: 3,
                  x: d3_interpolateNumber(ta[1], tb[1])
              });
          } else if (tb[0] || tb[1]) {
              s.push("translate(" + tb + ")");
          } else {
              s.push("");
          }
          if (ra != rb) {
              if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
              q.push({
                  i: s.push(s.pop() + "rotate(", null, ")") - 2,
                  x: d3_interpolateNumber(ra, rb)
              });
          } else if (rb) {
              s.push(s.pop() + "rotate(" + rb + ")");
          }
          if (wa != wb) {
              q.push({
                  i: s.push(s.pop() + "skewX(", null, ")") - 2,
                  x: d3_interpolateNumber(wa, wb)
              });
          } else if (wb) {
              s.push(s.pop() + "skewX(" + wb + ")");
          }
          if (ka[0] != kb[0] || ka[1] != kb[1]) {
              n = s.push(s.pop() + "scale(", null, ",", null, ")");
              q.push({
                  i: n - 4,
                  x: d3_interpolateNumber(ka[0], kb[0])
              }, {
                  i: n - 2,
                  x: d3_interpolateNumber(ka[1], kb[1])
              });
          } else if (kb[0] != 1 || kb[1] != 1) {
              s.push(s.pop() + "scale(" + kb + ")");
          }
          n = q.length;
          return function (t) {
              var i = -1, o;
              while (++i < n) s[(o = q[i]).i] = o.x(t);
              return s.join("");
          };
      }
  
      function d3_uninterpolateNumber(a, b) {
          b = (b -= a = +a) || 1 / b;
          return function (x) {
              return (x - a) / b;
          };
      }
  
      function d3_uninterpolateClamp(a, b) {
          b = (b -= a = +a) || 1 / b;
          return function (x) {
              return Math.max(0, Math.min(1, (x - a) / b));
          };
      }
  
      d3.layout = {};
      d3.layout.bundle = function () {
          return function (links) {
              var paths = [], i = -1, n = links.length;
              while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
              return paths;
          };
      };
      function d3_layout_bundlePath(link) {
          var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [start];
          while (start !== lca) {
              start = start.parent;
              points.push(start);
          }
          var k = points.length;
          while (end !== lca) {
              points.splice(k, 0, end);
              end = end.parent;
          }
          return points;
      }
  
      function d3_layout_bundleAncestors(node) {
          var ancestors = [], parent = node.parent;
          while (parent != null) {
              ancestors.push(node);
              node = parent;
              parent = parent.parent;
          }
          ancestors.push(node);
          return ancestors;
      }
  
      function d3_layout_bundleLeastCommonAncestor(a, b) {
          if (a === b) return a;
          var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
          while (aNode === bNode) {
              sharedNode = aNode;
              aNode = aNodes.pop();
              bNode = bNodes.pop();
          }
          return sharedNode;
      }
  
      d3.layout.chord = function () {
          var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
  
          function relayout() {
              var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
              chords = [];
              groups = [];
              k = 0, i = -1;
              while (++i < n) {
                  x = 0, j = -1;
                  while (++j < n) {
                      x += matrix[i][j];
                  }
                  groupSums.push(x);
                  subgroupIndex.push(d3.range(n));
                  k += x;
              }
              if (sortGroups) {
                  groupIndex.sort(function (a, b) {
                      return sortGroups(groupSums[a], groupSums[b]);
                  });
              }
              if (sortSubgroups) {
                  subgroupIndex.forEach(function (d, i) {
                      d.sort(function (a, b) {
                          return sortSubgroups(matrix[i][a], matrix[i][b]);
                      });
                  });
              }
              k = (τ - padding * n) / k;
              x = 0, i = -1;
              while (++i < n) {
                  x0 = x, j = -1;
                  while (++j < n) {
                      var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
                      subgroups[di + "-" + dj] = {
                          index: di,
                          subindex: dj,
                          startAngle: a0,
                          endAngle: a1,
                          value: v
                      };
                  }
                  groups[di] = {
                      index: di,
                      startAngle: x0,
                      endAngle: x,
                      value: (x - x0) / k
                  };
                  x += padding;
              }
              i = -1;
              while (++i < n) {
                  j = i - 1;
                  while (++j < n) {
                      var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
                      if (source.value || target.value) {
                          chords.push(source.value < target.value ? {
                              source: target,
                              target: source
                          } : {
                              source: source,
                              target: target
                          });
                      }
                  }
              }
              if (sortChords) resort();
          }
  
          function resort() {
              chords.sort(function (a, b) {
                  return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
              });
          }
  
          chord.matrix = function (x) {
              if (!arguments.length) return matrix;
              n = (matrix = x) && matrix.length;
              chords = groups = null;
              return chord;
          };
          chord.padding = function (x) {
              if (!arguments.length) return padding;
              padding = x;
              chords = groups = null;
              return chord;
          };
          chord.sortGroups = function (x) {
              if (!arguments.length) return sortGroups;
              sortGroups = x;
              chords = groups = null;
              return chord;
          };
          chord.sortSubgroups = function (x) {
              if (!arguments.length) return sortSubgroups;
              sortSubgroups = x;
              chords = null;
              return chord;
          };
          chord.sortChords = function (x) {
              if (!arguments.length) return sortChords;
              sortChords = x;
              if (chords) resort();
              return chord;
          };
          chord.chords = function () {
              if (!chords) relayout();
              return chords;
          };
          chord.groups = function () {
              if (!groups) relayout();
              return groups;
          };
          return chord;
      };
      d3.layout.force = function () {
          var force = {}, event = d3.dispatch("start", "tick", "end"), size = [1, 1], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
  
          function repulse(node) {
              return function (quad, x1, _, x2) {
                  if (quad.point !== node) {
                      var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
                      if (dw * dw / theta2 < dn) {
                          if (dn < chargeDistance2) {
                              var k = quad.charge / dn;
                              node.px -= dx * k;
                              node.py -= dy * k;
                          }
                          return true;
                      }
                      if (quad.point && dn && dn < chargeDistance2) {
                          var k = quad.pointCharge / dn;
                          node.px -= dx * k;
                          node.py -= dy * k;
                      }
                  }
                  return !quad.charge;
              };
          }
  
          force.tick = function () {
              if ((alpha *= .99) < .005) {
                  event.end({
                      type: "end",
                      alpha: alpha = 0
                  });
                  return true;
              }
              var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
              for (i = 0; i < m; ++i) {
                  o = links[i];
                  s = o.source;
                  t = o.target;
                  x = t.x - s.x;
                  y = t.y - s.y;
                  if (l = x * x + y * y) {
                      l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
                      x *= l;
                      y *= l;
                      t.x -= x * (k = s.weight / (t.weight + s.weight));
                      t.y -= y * k;
                      s.x += x * (k = 1 - k);
                      s.y += y * k;
                  }
              }
              if (k = alpha * gravity) {
                  x = size[0] / 2;
                  y = size[1] / 2;
                  i = -1;
                  if (k) while (++i < n) {
                      o = nodes[i];
                      o.x += (x - o.x) * k;
                      o.y += (y - o.y) * k;
                  }
              }
              if (charge) {
                  d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
                  i = -1;
                  while (++i < n) {
                      if (!(o = nodes[i]).fixed) {
                          q.visit(repulse(o));
                      }
                  }
              }
              i = -1;
              while (++i < n) {
                  o = nodes[i];
                  if (o.fixed) {
                      o.x = o.px;
                      o.y = o.py;
                  } else {
                      o.x -= (o.px - (o.px = o.x)) * friction;
                      o.y -= (o.py - (o.py = o.y)) * friction;
                  }
              }
              event.tick({
                  type: "tick",
                  alpha: alpha
              });
          };
          force.nodes = function (x) {
              if (!arguments.length) return nodes;
              nodes = x;
              return force;
          };
          force.links = function (x) {
              if (!arguments.length) return links;
              links = x;
              return force;
          };
          force.size = function (x) {
              if (!arguments.length) return size;
              size = x;
              return force;
          };
          force.linkDistance = function (x) {
              if (!arguments.length) return linkDistance;
              linkDistance = typeof x === "function" ? x : +x;
              return force;
          };
          force.distance = force.linkDistance;
          force.linkStrength = function (x) {
              if (!arguments.length) return linkStrength;
              linkStrength = typeof x === "function" ? x : +x;
              return force;
          };
          force.friction = function (x) {
              if (!arguments.length) return friction;
              friction = +x;
              return force;
          };
          force.charge = function (x) {
              if (!arguments.length) return charge;
              charge = typeof x === "function" ? x : +x;
              return force;
          };
          force.chargeDistance = function (x) {
              if (!arguments.length) return Math.sqrt(chargeDistance2);
              chargeDistance2 = x * x;
              return force;
          };
          force.gravity = function (x) {
              if (!arguments.length) return gravity;
              gravity = +x;
              return force;
          };
          force.theta = function (x) {
              if (!arguments.length) return Math.sqrt(theta2);
              theta2 = x * x;
              return force;
          };
          force.alpha = function (x) {
              if (!arguments.length) return alpha;
              x = +x;
              if (alpha) {
                  if (x > 0) alpha = x; else alpha = 0;
              } else if (x > 0) {
                  event.start({
                      type: "start",
                      alpha: alpha = x
                  });
                  d3.timer(force.tick);
              }
              return force;
          };
          force.start = function () {
              var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
              for (i = 0; i < n; ++i) {
                  (o = nodes[i]).index = i;
                  o.weight = 0;
              }
              for (i = 0; i < m; ++i) {
                  o = links[i];
                  if (typeof o.source == "number") o.source = nodes[o.source];
                  if (typeof o.target == "number") o.target = nodes[o.target];
                  ++o.source.weight;
                  ++o.target.weight;
              }
              for (i = 0; i < n; ++i) {
                  o = nodes[i];
                  if (isNaN(o.x)) o.x = position("x", w);
                  if (isNaN(o.y)) o.y = position("y", h);
                  if (isNaN(o.px)) o.px = o.x;
                  if (isNaN(o.py)) o.py = o.y;
              }
              distances = [];
              if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
              strengths = [];
              if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
              charges = [];
              if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
              function position(dimension, size) {
                  if (!neighbors) {
                      neighbors = new Array(n);
                      for (j = 0; j < n; ++j) {
                          neighbors[j] = [];
                      }
                      for (j = 0; j < m; ++j) {
                          var o = links[j];
                          neighbors[o.source.index].push(o.target);
                          neighbors[o.target.index].push(o.source);
                      }
                  }
                  var candidates = neighbors[i], j = -1, m = candidates.length, x;
                  while (++j < m) if (!isNaN(x = candidates[j][dimension])) return x;
                  return Math.random() * size;
              }
  
              return force.resume();
          };
          force.resume = function () {
              return force.alpha(.1);
          };
          force.stop = function () {
              return force.alpha(0);
          };
          force.drag = function () {
              if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
              if (!arguments.length) return drag;
              this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
          };
          function dragmove(d) {
              d.px = d3.event.x, d.py = d3.event.y;
              force.resume();
          }
  
          return d3.rebind(force, event, "on");
      };
      function d3_layout_forceDragstart(d) {
          d.fixed |= 2;
      }
  
      function d3_layout_forceDragend(d) {
          d.fixed &= ~6;
      }
  
      function d3_layout_forceMouseover(d) {
          d.fixed |= 4;
          d.px = d.x, d.py = d.y;
      }
  
      function d3_layout_forceMouseout(d) {
          d.fixed &= ~4;
      }
  
      function d3_layout_forceAccumulate(quad, alpha, charges) {
          var cx = 0, cy = 0;
          quad.charge = 0;
          if (!quad.leaf) {
              var nodes = quad.nodes, n = nodes.length, i = -1, c;
              while (++i < n) {
                  c = nodes[i];
                  if (c == null) continue;
                  d3_layout_forceAccumulate(c, alpha, charges);
                  quad.charge += c.charge;
                  cx += c.charge * c.cx;
                  cy += c.charge * c.cy;
              }
          }
          if (quad.point) {
              if (!quad.leaf) {
                  quad.point.x += Math.random() - .5;
                  quad.point.y += Math.random() - .5;
              }
              var k = alpha * charges[quad.point.index];
              quad.charge += quad.pointCharge = k;
              cx += k * quad.point.x;
              cy += k * quad.point.y;
          }
          quad.cx = cx / quad.charge;
          quad.cy = cy / quad.charge;
      }
  
      var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
      d3.layout.hierarchy = function () {
          var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
  
          function hierarchy(root) {
              var stack = [root], nodes = [], node;
              root.depth = 0;
              while ((node = stack.pop()) != null) {
                  nodes.push(node);
                  if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
                      var n, childs, child;
                      while (--n >= 0) {
                          stack.push(child = childs[n]);
                          child.parent = node;
                          child.depth = node.depth + 1;
                      }
                      if (value) node.value = 0;
                      node.children = childs;
                  } else {
                      if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
                      delete node.children;
                  }
              }
              d3_layout_hierarchyVisitAfter(root, function (node) {
                  var childs, parent;
                  if (sort && (childs = node.children)) childs.sort(sort);
                  if (value && (parent = node.parent)) parent.value += node.value;
              });
              return nodes;
          }
  
          hierarchy.sort = function (x) {
              if (!arguments.length) return sort;
              sort = x;
              return hierarchy;
          };
          hierarchy.children = function (x) {
              if (!arguments.length) return children;
              children = x;
              return hierarchy;
          };
          hierarchy.value = function (x) {
              if (!arguments.length) return value;
              value = x;
              return hierarchy;
          };
          hierarchy.revalue = function (root) {
              if (value) {
                  d3_layout_hierarchyVisitBefore(root, function (node) {
                      if (node.children) node.value = 0;
                  });
                  d3_layout_hierarchyVisitAfter(root, function (node) {
                      var parent;
                      if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
                      if (parent = node.parent) parent.value += node.value;
                  });
              }
              return root;
          };
          return hierarchy;
      };
      function d3_layout_hierarchyRebind(object, hierarchy) {
          d3.rebind(object, hierarchy, "sort", "children", "value");
          object.nodes = object;
          object.links = d3_layout_hierarchyLinks;
          return object;
      }
  
      function d3_layout_hierarchyVisitBefore(node, callback) {
          var nodes = [node];
          while ((node = nodes.pop()) != null) {
              callback(node);
              if ((children = node.children) && (n = children.length)) {
                  var n, children;
                  while (--n >= 0) nodes.push(children[n]);
              }
          }
      }
  
      function d3_layout_hierarchyVisitAfter(node, callback) {
          var nodes = [node], nodes2 = [];
          while ((node = nodes.pop()) != null) {
              nodes2.push(node);
              if ((children = node.children) && (n = children.length)) {
                  var i = -1, n, children;
                  while (++i < n) nodes.push(children[i]);
              }
          }
          while ((node = nodes2.pop()) != null) {
              callback(node);
          }
      }
  
      function d3_layout_hierarchyChildren(d) {
          return d.children;
      }
  
      function d3_layout_hierarchyValue(d) {
          return d.value;
      }
  
      function d3_layout_hierarchySort(a, b) {
          return b.value - a.value;
      }
  
      function d3_layout_hierarchyLinks(nodes) {
          return d3.merge(nodes.map(function (parent) {
              return (parent.children || []).map(function (child) {
                  return {
                      source: parent,
                      target: child
                  };
              });
          }));
      }
  
      d3.layout.partition = function () {
          var hierarchy = d3.layout.hierarchy(), size = [1, 1];
  
          function position(node, x, dx, dy) {
              var children = node.children;
              node.x = x;
              node.y = node.depth * dy;
              node.dx = dx;
              node.dy = dy;
              if (children && (n = children.length)) {
                  var i = -1, n, c, d;
                  dx = node.value ? dx / node.value : 0;
                  while (++i < n) {
                      position(c = children[i], x, d = c.value * dx, dy);
                      x += d;
                  }
              }
          }
  
          function depth(node) {
              var children = node.children, d = 0;
              if (children && (n = children.length)) {
                  var i = -1, n;
                  while (++i < n) d = Math.max(d, depth(children[i]));
              }
              return 1 + d;
          }
  
          function partition(d, i) {
              var nodes = hierarchy.call(this, d, i);
              position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
              return nodes;
          }
  
          partition.size = function (x) {
              if (!arguments.length) return size;
              size = x;
              return partition;
          };
          return d3_layout_hierarchyRebind(partition, hierarchy);
      };
      d3.layout.pie = function () {
          var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
  
          function pie(data) {
              var n = data.length, values = data.map(function (d, i) {
                  return +value.call(pie, d, i);
              }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), k = (da - n * pa) / d3.sum(values), index = d3.range(n), arcs = [], v;
              if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function (i, j) {
                  return values[j] - values[i];
              } : function (i, j) {
                  return sort(data[i], data[j]);
              });
              index.forEach(function (i) {
                  arcs[i] = {
                      data: data[i],
                      value: v = values[i],
                      startAngle: a,
                      endAngle: a += v * k + pa,
                      padAngle: p
                  };
              });
              return arcs;
          }
  
          pie.value = function (_) {
              if (!arguments.length) return value;
              value = _;
              return pie;
          };
          pie.sort = function (_) {
              if (!arguments.length) return sort;
              sort = _;
              return pie;
          };
          pie.startAngle = function (_) {
              if (!arguments.length) return startAngle;
              startAngle = _;
              return pie;
          };
          pie.endAngle = function (_) {
              if (!arguments.length) return endAngle;
              endAngle = _;
              return pie;
          };
          pie.padAngle = function (_) {
              if (!arguments.length) return padAngle;
              padAngle = _;
              return pie;
          };
          return pie;
      };
      var d3_layout_pieSortByValue = {};
      d3.layout.stack = function () {
          var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
  
          function stack(data, index) {
              if (!(n = data.length)) return data;
              var series = data.map(function (d, i) {
                  return values.call(stack, d, i);
              });
              var points = series.map(function (d) {
                  return d.map(function (v, i) {
                      return [x.call(stack, v, i), y.call(stack, v, i)];
                  });
              });
              var orders = order.call(stack, points, index);
              series = d3.permute(series, orders);
              points = d3.permute(points, orders);
              var offsets = offset.call(stack, points, index);
              var m = series[0].length, n, i, j, o;
              for (j = 0; j < m; ++j) {
                  out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
                  for (i = 1; i < n; ++i) {
                      out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
                  }
              }
              return data;
          }
  
          stack.values = function (x) {
              if (!arguments.length) return values;
              values = x;
              return stack;
          };
          stack.order = function (x) {
              if (!arguments.length) return order;
              order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
              return stack;
          };
          stack.offset = function (x) {
              if (!arguments.length) return offset;
              offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
              return stack;
          };
          stack.x = function (z) {
              if (!arguments.length) return x;
              x = z;
              return stack;
          };
          stack.y = function (z) {
              if (!arguments.length) return y;
              y = z;
              return stack;
          };
          stack.out = function (z) {
              if (!arguments.length) return out;
              out = z;
              return stack;
          };
          return stack;
      };
      function d3_layout_stackX(d) {
          return d.x;
      }
  
      function d3_layout_stackY(d) {
          return d.y;
      }
  
      function d3_layout_stackOut(d, y0, y) {
          d.y0 = y0;
          d.y = y;
      }
  
      var d3_layout_stackOrders = d3.map({
          "inside-out": function (data) {
              var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function (a, b) {
                  return max[a] - max[b];
              }), top = 0, bottom = 0, tops = [], bottoms = [];
              for (i = 0; i < n; ++i) {
                  j = index[i];
                  if (top < bottom) {
                      top += sums[j];
                      tops.push(j);
                  } else {
                      bottom += sums[j];
                      bottoms.push(j);
                  }
              }
              return bottoms.reverse().concat(tops);
          },
          reverse: function (data) {
              return d3.range(data.length).reverse();
          },
          "default": d3_layout_stackOrderDefault
      });
      var d3_layout_stackOffsets = d3.map({
          silhouette: function (data) {
              var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
              for (j = 0; j < m; ++j) {
                  for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
                  if (o > max) max = o;
                  sums.push(o);
              }
              for (j = 0; j < m; ++j) {
                  y0[j] = (max - sums[j]) / 2;
              }
              return y0;
          },
          wiggle: function (data) {
              var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
              y0[0] = o = o0 = 0;
              for (j = 1; j < m; ++j) {
                  for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
                  for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
                      for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
                          s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
                      }
                      s2 += s3 * data[i][j][1];
                  }
                  y0[j] = o -= s1 ? s2 / s1 * dx : 0;
                  if (o < o0) o0 = o;
              }
              for (j = 0; j < m; ++j) y0[j] -= o0;
              return y0;
          },
          expand: function (data) {
              var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
              for (j = 0; j < m; ++j) {
                  for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
                  if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
              }
              for (j = 0; j < m; ++j) y0[j] = 0;
              return y0;
          },
          zero: d3_layout_stackOffsetZero
      });
  
      function d3_layout_stackOrderDefault(data) {
          return d3.range(data.length);
      }
  
      function d3_layout_stackOffsetZero(data) {
          var j = -1, m = data[0].length, y0 = [];
          while (++j < m) y0[j] = 0;
          return y0;
      }
  
      function d3_layout_stackMaxIndex(array) {
          var i = 1, j = 0, v = array[0][1], k, n = array.length;
          for (; i < n; ++i) {
              if ((k = array[i][1]) > v) {
                  j = i;
                  v = k;
              }
          }
          return j;
      }
  
      function d3_layout_stackReduceSum(d) {
          return d.reduce(d3_layout_stackSum, 0);
      }
  
      function d3_layout_stackSum(p, d) {
          return p + d[1];
      }
  
      d3.layout.histogram = function () {
          var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
  
          function histogram(data, i) {
              var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
              while (++i < m) {
                  bin = bins[i] = [];
                  bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
                  bin.y = 0;
              }
              if (m > 0) {
                  i = -1;
                  while (++i < n) {
                      x = values[i];
                      if (x >= range[0] && x <= range[1]) {
                          bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
                          bin.y += k;
                          bin.push(data[i]);
                      }
                  }
              }
              return bins;
          }
  
          histogram.value = function (x) {
              if (!arguments.length) return valuer;
              valuer = x;
              return histogram;
          };
          histogram.range = function (x) {
              if (!arguments.length) return ranger;
              ranger = d3_functor(x);
              return histogram;
          };
          histogram.bins = function (x) {
              if (!arguments.length) return binner;
              binner = typeof x === "number" ? function (range) {
                  return d3_layout_histogramBinFixed(range, x);
              } : d3_functor(x);
              return histogram;
          };
          histogram.frequency = function (x) {
              if (!arguments.length) return frequency;
              frequency = !!x;
              return histogram;
          };
          return histogram;
      };
      function d3_layout_histogramBinSturges(range, values) {
          return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
      }
  
      function d3_layout_histogramBinFixed(range, n) {
          var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
          while (++x <= n) f[x] = m * x + b;
          return f;
      }
  
      function d3_layout_histogramRange(values) {
          return [d3.min(values), d3.max(values)];
      }
  
      d3.layout.pack = function () {
          var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [1, 1], radius;
  
          function pack(d, i) {
              var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function () {
                  return radius;
              };
              root.x = root.y = 0;
              d3_layout_hierarchyVisitAfter(root, function (d) {
                  d.r = +r(d.value);
              });
              d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
              if (padding) {
                  var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
                  d3_layout_hierarchyVisitAfter(root, function (d) {
                      d.r += dr;
                  });
                  d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
                  d3_layout_hierarchyVisitAfter(root, function (d) {
                      d.r -= dr;
                  });
              }
              d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
              return nodes;
          }
  
          pack.size = function (_) {
              if (!arguments.length) return size;
              size = _;
              return pack;
          };
          pack.radius = function (_) {
              if (!arguments.length) return radius;
              radius = _ == null || typeof _ === "function" ? _ : +_;
              return pack;
          };
          pack.padding = function (_) {
              if (!arguments.length) return padding;
              padding = +_;
              return pack;
          };
          return d3_layout_hierarchyRebind(pack, hierarchy);
      };
      function d3_layout_packSort(a, b) {
          return a.value - b.value;
      }
  
      function d3_layout_packInsert(a, b) {
          var c = a._pack_next;
          a._pack_next = b;
          b._pack_prev = a;
          b._pack_next = c;
          c._pack_prev = b;
      }
  
      function d3_layout_packSplice(a, b) {
          a._pack_next = b;
          b._pack_prev = a;
      }
  
      function d3_layout_packIntersects(a, b) {
          var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
          return .999 * dr * dr > dx * dx + dy * dy;
      }
  
      function d3_layout_packSiblings(node) {
          if (!(nodes = node.children) || !(n = nodes.length)) return;
          var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
  
          function bound(node) {
              xMin = Math.min(node.x - node.r, xMin);
              xMax = Math.max(node.x + node.r, xMax);
              yMin = Math.min(node.y - node.r, yMin);
              yMax = Math.max(node.y + node.r, yMax);
          }
  
          nodes.forEach(d3_layout_packLink);
          a = nodes[0];
          a.x = -a.r;
          a.y = 0;
          bound(a);
          if (n > 1) {
              b = nodes[1];
              b.x = b.r;
              b.y = 0;
              bound(b);
              if (n > 2) {
                  c = nodes[2];
                  d3_layout_packPlace(a, b, c);
                  bound(c);
                  d3_layout_packInsert(a, c);
                  a._pack_prev = c;
                  d3_layout_packInsert(c, b);
                  b = a._pack_next;
                  for (i = 3; i < n; i++) {
                      d3_layout_packPlace(a, b, c = nodes[i]);
                      var isect = 0, s1 = 1, s2 = 1;
                      for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
                          if (d3_layout_packIntersects(j, c)) {
                              isect = 1;
                              break;
                          }
                      }
                      if (isect == 1) {
                          for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
                              if (d3_layout_packIntersects(k, c)) {
                                  break;
                              }
                          }
                      }
                      if (isect) {
                          if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
                          i--;
                      } else {
                          d3_layout_packInsert(a, c);
                          b = c;
                          bound(c);
                      }
                  }
              }
          }
          var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
          for (i = 0; i < n; i++) {
              c = nodes[i];
              c.x -= cx;
              c.y -= cy;
              cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
          }
          node.r = cr;
          nodes.forEach(d3_layout_packUnlink);
      }
  
      function d3_layout_packLink(node) {
          node._pack_next = node._pack_prev = node;
      }
  
      function d3_layout_packUnlink(node) {
          delete node._pack_next;
          delete node._pack_prev;
      }
  
      function d3_layout_packTransform(node, x, y, k) {
          var children = node.children;
          node.x = x += k * node.x;
          node.y = y += k * node.y;
          node.r *= k;
          if (children) {
              var i = -1, n = children.length;
              while (++i < n) d3_layout_packTransform(children[i], x, y, k);
          }
      }
  
      function d3_layout_packPlace(a, b, c) {
          var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
          if (db && (dx || dy)) {
              var da = b.r + c.r, dc = dx * dx + dy * dy;
              da *= da;
              db *= db;
              var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
              c.x = a.x + x * dx + y * dy;
              c.y = a.y + x * dy - y * dx;
          } else {
              c.x = a.x + db;
              c.y = a.y;
          }
      }
  
      d3.layout.tree = function () {
          var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [1, 1], nodeSize = null;
  
          function tree(d, i) {
              var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
              d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
              d3_layout_hierarchyVisitBefore(root1, secondWalk);
              if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
                  var left = root0, right = root0, bottom = root0;
                  d3_layout_hierarchyVisitBefore(root0, function (node) {
                      if (node.x < left.x) left = node;
                      if (node.x > right.x) right = node;
                      if (node.depth > bottom.depth) bottom = node;
                  });
                  var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
                  d3_layout_hierarchyVisitBefore(root0, function (node) {
                      node.x = (node.x + tx) * kx;
                      node.y = node.depth * ky;
                  });
              }
              return nodes;
          }
  
          function wrapTree(root0) {
              var root1 = {
                  A: null,
                  children: [root0]
              }, queue = [root1], node1;
              while ((node1 = queue.pop()) != null) {
                  for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
                      queue.push((children[i] = child = {
                          _: children[i],
                          parent: node1,
                          children: (child = children[i].children) && child.slice() || [],
                          A: null,
                          a: null,
                          z: 0,
                          m: 0,
                          c: 0,
                          s: 0,
                          t: null,
                          i: i
                      }).a = child);
                  }
              }
              return root1.children[0];
          }
  
          function firstWalk(v) {
              var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
              if (children.length) {
                  d3_layout_treeShift(v);
                  var midpoint = (children[0].z + children[children.length - 1].z) / 2;
                  if (w) {
                      v.z = w.z + separation(v._, w._);
                      v.m = v.z - midpoint;
                  } else {
                      v.z = midpoint;
                  }
              } else if (w) {
                  v.z = w.z + separation(v._, w._);
              }
              v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
          }
  
          function secondWalk(v) {
              v._.x = v.z + v.parent.m;
              v.m += v.parent.m;
          }
  
          function apportion(v, w, ancestor) {
              if (w) {
                  var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
                  while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
                      vom = d3_layout_treeLeft(vom);
                      vop = d3_layout_treeRight(vop);
                      vop.a = v;
                      shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
                      if (shift > 0) {
                          d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
                          sip += shift;
                          sop += shift;
                      }
                      sim += vim.m;
                      sip += vip.m;
                      som += vom.m;
                      sop += vop.m;
                  }
                  if (vim && !d3_layout_treeRight(vop)) {
                      vop.t = vim;
                      vop.m += sim - sop;
                  }
                  if (vip && !d3_layout_treeLeft(vom)) {
                      vom.t = vip;
                      vom.m += sip - som;
                      ancestor = v;
                  }
              }
              return ancestor;
          }
  
          function sizeNode(node) {
              node.x *= size[0];
              node.y = node.depth * size[1];
          }
  
          tree.separation = function (x) {
              if (!arguments.length) return separation;
              separation = x;
              return tree;
          };
          tree.size = function (x) {
              if (!arguments.length) return nodeSize ? null : size;
              nodeSize = (size = x) == null ? sizeNode : null;
              return tree;
          };
          tree.nodeSize = function (x) {
              if (!arguments.length) return nodeSize ? size : null;
              nodeSize = (size = x) == null ? null : sizeNode;
              return tree;
          };
          return d3_layout_hierarchyRebind(tree, hierarchy);
      };
      function d3_layout_treeSeparation(a, b) {
          return a.parent == b.parent ? 1 : 2;
      }
  
      function d3_layout_treeLeft(v) {
          var children = v.children;
          return children.length ? children[0] : v.t;
      }
  
      function d3_layout_treeRight(v) {
          var children = v.children, n;
          return (n = children.length) ? children[n - 1] : v.t;
      }
  
      function d3_layout_treeMove(wm, wp, shift) {
          var change = shift / (wp.i - wm.i);
          wp.c -= change;
          wp.s += shift;
          wm.c += change;
          wp.z += shift;
          wp.m += shift;
      }
  
      function d3_layout_treeShift(v) {
          var shift = 0, change = 0, children = v.children, i = children.length, w;
          while (--i >= 0) {
              w = children[i];
              w.z += shift;
              w.m += shift;
              shift += w.s + (change += w.c);
          }
      }
  
      function d3_layout_treeAncestor(vim, v, ancestor) {
          return vim.a.parent === v.parent ? vim.a : ancestor;
      }
  
      d3.layout.cluster = function () {
          var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [1, 1], nodeSize = false;
  
          function cluster(d, i) {
              var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
              d3_layout_hierarchyVisitAfter(root, function (node) {
                  var children = node.children;
                  if (children && children.length) {
                      node.x = d3_layout_clusterX(children);
                      node.y = d3_layout_clusterY(children);
                  } else {
                      node.x = previousNode ? x += separation(node, previousNode) : 0;
                      node.y = 0;
                      previousNode = node;
                  }
              });
              var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
              d3_layout_hierarchyVisitAfter(root, nodeSize ? function (node) {
                  node.x = (node.x - root.x) * size[0];
                  node.y = (root.y - node.y) * size[1];
              } : function (node) {
                  node.x = (node.x - x0) / (x1 - x0) * size[0];
                  node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
              });
              return nodes;
          }
  
          cluster.separation = function (x) {
              if (!arguments.length) return separation;
              separation = x;
              return cluster;
          };
          cluster.size = function (x) {
              if (!arguments.length) return nodeSize ? null : size;
              nodeSize = (size = x) == null;
              return cluster;
          };
          cluster.nodeSize = function (x) {
              if (!arguments.length) return nodeSize ? size : null;
              nodeSize = (size = x) != null;
              return cluster;
          };
          return d3_layout_hierarchyRebind(cluster, hierarchy);
      };
      function d3_layout_clusterY(children) {
          return 1 + d3.max(children, function (child) {
                  return child.y;
              });
      }
  
      function d3_layout_clusterX(children) {
          return children.reduce(function (x, child) {
                  return x + child.x;
              }, 0) / children.length;
      }
  
      function d3_layout_clusterLeft(node) {
          var children = node.children;
          return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
      }
  
      function d3_layout_clusterRight(node) {
          var children = node.children, n;
          return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
      }
  
      d3.layout.treemap = function () {
          var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [1, 1], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
  
          function scale(children, k) {
              var i = -1, n = children.length, child, area;
              while (++i < n) {
                  area = (child = children[i]).value * (k < 0 ? 0 : k);
                  child.area = isNaN(area) || area <= 0 ? 0 : area;
              }
          }
  
          function squarify(node) {
              var children = node.children;
              if (children && children.length) {
                  var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
                  scale(remaining, rect.dx * rect.dy / node.value);
                  row.area = 0;
                  while ((n = remaining.length) > 0) {
                      row.push(child = remaining[n - 1]);
                      row.area += child.area;
                      if (mode !== "squarify" || (score = worst(row, u)) <= best) {
                          remaining.pop();
                          best = score;
                      } else {
                          row.area -= row.pop().area;
                          position(row, u, rect, false);
                          u = Math.min(rect.dx, rect.dy);
                          row.length = row.area = 0;
                          best = Infinity;
                      }
                  }
                  if (row.length) {
                      position(row, u, rect, true);
                      row.length = row.area = 0;
                  }
                  children.forEach(squarify);
              }
          }
  
          function stickify(node) {
              var children = node.children;
              if (children && children.length) {
                  var rect = pad(node), remaining = children.slice(), child, row = [];
                  scale(remaining, rect.dx * rect.dy / node.value);
                  row.area = 0;
                  while (child = remaining.pop()) {
                      row.push(child);
                      row.area += child.area;
                      if (child.z != null) {
                          position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
                          row.length = row.area = 0;
                      }
                  }
                  children.forEach(stickify);
              }
          }
  
          function worst(row, u) {
              var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
              while (++i < n) {
                  if (!(r = row[i].area)) continue;
                  if (r < rmin) rmin = r;
                  if (r > rmax) rmax = r;
              }
              s *= s;
              u *= u;
              return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
          }
  
          function position(row, u, rect, flush) {
              var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
              if (u == rect.dx) {
                  if (flush || v > rect.dy) v = rect.dy;
                  while (++i < n) {
                      o = row[i];
                      o.x = x;
                      o.y = y;
                      o.dy = v;
                      x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
                  }
                  o.z = true;
                  o.dx += rect.x + rect.dx - x;
                  rect.y += v;
                  rect.dy -= v;
              } else {
                  if (flush || v > rect.dx) v = rect.dx;
                  while (++i < n) {
                      o = row[i];
                      o.x = x;
                      o.y = y;
                      o.dx = v;
                      y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
                  }
                  o.z = false;
                  o.dy += rect.y + rect.dy - y;
                  rect.x += v;
                  rect.dx -= v;
              }
          }
  
          function treemap(d) {
              var nodes = stickies || hierarchy(d), root = nodes[0];
              root.x = 0;
              root.y = 0;
              root.dx = size[0];
              root.dy = size[1];
              if (stickies) hierarchy.revalue(root);
              scale([root], root.dx * root.dy / root.value);
              (stickies ? stickify : squarify)(root);
              if (sticky) stickies = nodes;
              return nodes;
          }
  
          treemap.size = function (x) {
              if (!arguments.length) return size;
              size = x;
              return treemap;
          };
          treemap.padding = function (x) {
              if (!arguments.length) return padding;
              function padFunction(node) {
                  var p = x.call(treemap, node, node.depth);
                  return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [p, p, p, p] : p);
              }
  
              function padConstant(node) {
                  return d3_layout_treemapPad(node, x);
              }
  
              var type;
              pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [x, x, x, x],
                  padConstant) : padConstant;
              return treemap;
          };
          treemap.round = function (x) {
              if (!arguments.length) return round != Number;
              round = x ? Math.round : Number;
              return treemap;
          };
          treemap.sticky = function (x) {
              if (!arguments.length) return sticky;
              sticky = x;
              stickies = null;
              return treemap;
          };
          treemap.ratio = function (x) {
              if (!arguments.length) return ratio;
              ratio = x;
              return treemap;
          };
          treemap.mode = function (x) {
              if (!arguments.length) return mode;
              mode = x + "";
              return treemap;
          };
          return d3_layout_hierarchyRebind(treemap, hierarchy);
      };
      function d3_layout_treemapPadNull(node) {
          return {
              x: node.x,
              y: node.y,
              dx: node.dx,
              dy: node.dy
          };
      }
  
      function d3_layout_treemapPad(node, padding) {
          var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
          if (dx < 0) {
              x += dx / 2;
              dx = 0;
          }
          if (dy < 0) {
              y += dy / 2;
              dy = 0;
          }
          return {
              x: x,
              y: y,
              dx: dx,
              dy: dy
          };
      }
  
      d3.random = {
          normal: function (µ, σ) {
              var n = arguments.length;
              if (n < 2) σ = 1;
              if (n < 1) µ = 0;
              return function () {
                  var x, y, r;
                  do {
                      x = Math.random() * 2 - 1;
                      y = Math.random() * 2 - 1;
                      r = x * x + y * y;
                  } while (!r || r > 1);
                  return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
              };
          },
          logNormal: function () {
              var random = d3.random.normal.apply(d3, arguments);
              return function () {
                  return Math.exp(random());
              };
          },
          bates: function (m) {
              var random = d3.random.irwinHall(m);
              return function () {
                  return random() / m;
              };
          },
          irwinHall: function (m) {
              return function () {
                  for (var s = 0, j = 0; j < m; j++) s += Math.random();
                  return s;
              };
          }
      };
      d3.scale = {};
      function d3_scaleExtent(domain) {
          var start = domain[0], stop = domain[domain.length - 1];
          return start < stop ? [start, stop] : [stop, start];
      }
  
      function d3_scaleRange(scale) {
          return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
      }
  
      function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
          var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
          return function (x) {
              return i(u(x));
          };
      }
  
      function d3_scale_nice(domain, nice) {
          var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
          if (x1 < x0) {
              dx = i0, i0 = i1, i1 = dx;
              dx = x0, x0 = x1, x1 = dx;
          }
          domain[i0] = nice.floor(x0);
          domain[i1] = nice.ceil(x1);
          return domain;
      }
  
      function d3_scale_niceStep(step) {
          return step ? {
              floor: function (x) {
                  return Math.floor(x / step) * step;
              },
              ceil: function (x) {
                  return Math.ceil(x / step) * step;
              }
          } : d3_scale_niceIdentity;
      }
  
      var d3_scale_niceIdentity = {
          floor: d3_identity,
          ceil: d3_identity
      };
  
      function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
          var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
          if (domain[k] < domain[0]) {
              domain = domain.slice().reverse();
              range = range.slice().reverse();
          }
          while (++j <= k) {
              u.push(uninterpolate(domain[j - 1], domain[j]));
              i.push(interpolate(range[j - 1], range[j]));
          }
          return function (x) {
              var j = d3.bisect(domain, x, 1, k) - 1;
              return i[j](u[j](x));
          };
      }
  
      d3.scale.linear = function () {
          return d3_scale_linear([0, 1], [0, 1], d3_interpolate, false);
      };
      function d3_scale_linear(domain, range, interpolate, clamp) {
          var output, input;
  
          function rescale() {
              var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
              output = linear(domain, range, uninterpolate, interpolate);
              input = linear(range, domain, uninterpolate, d3_interpolate);
              return scale;
          }
  
          function scale(x) {
              return output(x);
          }
  
          scale.invert = function (y) {
              return input(y);
          };
          scale.domain = function (x) {
              if (!arguments.length) return domain;
              domain = x.map(Number);
              return rescale();
          };
          scale.range = function (x) {
              if (!arguments.length) return range;
              range = x;
              return rescale();
          };
          scale.rangeRound = function (x) {
              return scale.range(x).interpolate(d3_interpolateRound);
          };
          scale.clamp = function (x) {
              if (!arguments.length) return clamp;
              clamp = x;
              return rescale();
          };
          scale.interpolate = function (x) {
              if (!arguments.length) return interpolate;
              interpolate = x;
              return rescale();
          };
          scale.ticks = function (m) {
              return d3_scale_linearTicks(domain, m);
          };
          scale.tickFormat = function (m, format) {
              return d3_scale_linearTickFormat(domain, m, format);
          };
          scale.nice = function (m) {
              d3_scale_linearNice(domain, m);
              return rescale();
          };
          scale.copy = function () {
              return d3_scale_linear(domain, range, interpolate, clamp);
          };
          return rescale();
      }
  
      function d3_scale_linearRebind(scale, linear) {
          return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
      }
  
      function d3_scale_linearNice(domain, m) {
          return d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
      }
  
      function d3_scale_linearTickRange(domain, m) {
          if (m == null) m = 10;
          var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
          if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
          extent[0] = Math.ceil(extent[0] / step) * step;
          extent[1] = Math.floor(extent[1] / step) * step + step * .5;
          extent[2] = step;
          return extent;
      }
  
      function d3_scale_linearTicks(domain, m) {
          return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
      }
  
      function d3_scale_linearTickFormat(domain, m, format) {
          var range = d3_scale_linearTickRange(domain, m);
          if (format) {
              var match = d3_format_re.exec(format);
              match.shift();
              if (match[8] === "s") {
                  var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
                  if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
                  match[8] = "f";
                  format = d3.format(match.join(""));
                  return function (d) {
                      return format(prefix.scale(d)) + prefix.symbol;
                  };
              }
              if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
              format = match.join("");
          } else {
              format = ",." + d3_scale_linearPrecision(range[2]) + "f";
          }
          return d3.format(format);
      }
  
      var d3_scale_linearFormatSignificant = {
          s: 1,
          g: 1,
          p: 1,
          r: 1,
          e: 1
      };
  
      function d3_scale_linearPrecision(value) {
          return -Math.floor(Math.log(value) / Math.LN10 + .01);
      }
  
      function d3_scale_linearFormatPrecision(type, range) {
          var p = d3_scale_linearPrecision(range[2]);
          return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
      }
  
      d3.scale.log = function () {
          return d3_scale_log(d3.scale.linear().domain([0, 1]), 10, true, [1, 10]);
      };
      function d3_scale_log(linear, base, positive, domain) {
          function log(x) {
              return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
          }
  
          function pow(x) {
              return positive ? Math.pow(base, x) : -Math.pow(base, -x);
          }
  
          function scale(x) {
              return linear(log(x));
          }
  
          scale.invert = function (x) {
              return pow(linear.invert(x));
          };
          scale.domain = function (x) {
              if (!arguments.length) return domain;
              positive = x[0] >= 0;
              linear.domain((domain = x.map(Number)).map(log));
              return scale;
          };
          scale.base = function (_) {
              if (!arguments.length) return base;
              base = +_;
              linear.domain(domain.map(log));
              return scale;
          };
          scale.nice = function () {
              var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
              linear.domain(niced);
              domain = niced.map(pow);
              return scale;
          };
          scale.ticks = function () {
              var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
              if (isFinite(j - i)) {
                  if (positive) {
                      for (; i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
                      ticks.push(pow(i));
                  } else {
                      ticks.push(pow(i));
                      for (; i++ < j;) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
                  }
                  for (i = 0; ticks[i] < u; i++) {
                  }
                  for (j = ticks.length; ticks[j - 1] > v; j--) {
                  }
                  ticks = ticks.slice(i, j);
              }
              return ticks;
          };
          scale.tickFormat = function (n, format) {
              if (!arguments.length) return d3_scale_logFormat;
              if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
              var k = Math.max(.1, n / scale.ticks().length), f = positive ? (e = 1e-12, Math.ceil) : (e = -1e-12,
                  Math.floor), e;
              return function (d) {
                  return d / pow(f(log(d) + e)) <= k ? format(d) : "";
              };
          };
          scale.copy = function () {
              return d3_scale_log(linear.copy(), base, positive, domain);
          };
          return d3_scale_linearRebind(scale, linear);
      }
  
      var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
          floor: function (x) {
              return -Math.ceil(-x);
          },
          ceil: function (x) {
              return -Math.floor(-x);
          }
      };
      d3.scale.pow = function () {
          return d3_scale_pow(d3.scale.linear(), 1, [0, 1]);
      };
      function d3_scale_pow(linear, exponent, domain) {
          var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
  
          function scale(x) {
              return linear(powp(x));
          }
  
          scale.invert = function (x) {
              return powb(linear.invert(x));
          };
          scale.domain = function (x) {
              if (!arguments.length) return domain;
              linear.domain((domain = x.map(Number)).map(powp));
              return scale;
          };
          scale.ticks = function (m) {
              return d3_scale_linearTicks(domain, m);
          };
          scale.tickFormat = function (m, format) {
              return d3_scale_linearTickFormat(domain, m, format);
          };
          scale.nice = function (m) {
              return scale.domain(d3_scale_linearNice(domain, m));
          };
          scale.exponent = function (x) {
              if (!arguments.length) return exponent;
              powp = d3_scale_powPow(exponent = x);
              powb = d3_scale_powPow(1 / exponent);
              linear.domain(domain.map(powp));
              return scale;
          };
          scale.copy = function () {
              return d3_scale_pow(linear.copy(), exponent, domain);
          };
          return d3_scale_linearRebind(scale, linear);
      }
  
      function d3_scale_powPow(e) {
          return function (x) {
              return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
          };
      }
  
      d3.scale.sqrt = function () {
          return d3.scale.pow().exponent(.5);
      };
      d3.scale.ordinal = function () {
          return d3_scale_ordinal([], {
              t: "range",
              a: [[]]
          });
      };
      function d3_scale_ordinal(domain, ranger) {
          var index, range, rangeBand;
  
          function scale(x) {
              return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
          }
  
          function steps(start, step) {
              return d3.range(domain.length).map(function (i) {
                  return start + step * i;
              });
          }
  
          scale.domain = function (x) {
              if (!arguments.length) return domain;
              domain = [];
              index = new d3_Map();
              var i = -1, n = x.length, xi;
              while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
              return scale[ranger.t].apply(scale, ranger.a);
          };
          scale.range = function (x) {
              if (!arguments.length) return range;
              range = x;
              rangeBand = 0;
              ranger = {
                  t: "range",
                  a: arguments
              };
              return scale;
          };
          scale.rangePoints = function (x, padding) {
              if (arguments.length < 2) padding = 0;
              var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2,
                  0) : (stop - start) / (domain.length - 1 + padding);
              range = steps(start + step * padding / 2, step);
              rangeBand = 0;
              ranger = {
                  t: "rangePoints",
                  a: arguments
              };
              return scale;
          };
          scale.rangeRoundPoints = function (x, padding) {
              if (arguments.length < 2) padding = 0;
              var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2),
                  0) : (stop - start) / (domain.length - 1 + padding) | 0;
              range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
              rangeBand = 0;
              ranger = {
                  t: "rangeRoundPoints",
                  a: arguments
              };
              return scale;
          };
          scale.rangeBands = function (x, padding, outerPadding) {
              if (arguments.length < 2) padding = 0;
              if (arguments.length < 3) outerPadding = padding;
              var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
              range = steps(start + step * outerPadding, step);
              if (reverse) range.reverse();
              rangeBand = step * (1 - padding);
              ranger = {
                  t: "rangeBands",
                  a: arguments
              };
              return scale;
          };
          scale.rangeRoundBands = function (x, padding, outerPadding) {
              if (arguments.length < 2) padding = 0;
              if (arguments.length < 3) outerPadding = padding;
              var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
              range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
              if (reverse) range.reverse();
              rangeBand = Math.round(step * (1 - padding));
              ranger = {
                  t: "rangeRoundBands",
                  a: arguments
              };
              return scale;
          };
          scale.rangeBand = function () {
              return rangeBand;
          };
          scale.rangeExtent = function () {
              return d3_scaleExtent(ranger.a[0]);
          };
          scale.copy = function () {
              return d3_scale_ordinal(domain, ranger);
          };
          return scale.domain(domain);
      }
  
      d3.scale.category10 = function () {
          return d3.scale.ordinal().range(d3_category10);
      };
      d3.scale.category20 = function () {
          return d3.scale.ordinal().range(d3_category20);
      };
      d3.scale.category20b = function () {
          return d3.scale.ordinal().range(d3_category20b);
      };
      d3.scale.category20c = function () {
          return d3.scale.ordinal().range(d3_category20c);
      };
      var d3_category10 = [2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175].map(d3_rgbString);
      var d3_category20 = [2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725].map(d3_rgbString);
      var d3_category20b = [3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654].map(d3_rgbString);
      var d3_category20c = [3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081].map(d3_rgbString);
      d3.scale.quantile = function () {
          return d3_scale_quantile([], []);
      };
      function d3_scale_quantile(domain, range) {
          var thresholds;
  
          function rescale() {
              var k = 0, q = range.length;
              thresholds = [];
              while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
              return scale;
          }
  
          function scale(x) {
              if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
          }
  
          scale.domain = function (x) {
              if (!arguments.length) return domain;
              domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
              return rescale();
          };
          scale.range = function (x) {
              if (!arguments.length) return range;
              range = x;
              return rescale();
          };
          scale.quantiles = function () {
              return thresholds;
          };
          scale.invertExtent = function (y) {
              y = range.indexOf(y);
              return y < 0 ? [NaN, NaN] : [y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1]];
          };
          scale.copy = function () {
              return d3_scale_quantile(domain, range);
          };
          return rescale();
      }
  
      d3.scale.quantize = function () {
          return d3_scale_quantize(0, 1, [0, 1]);
      };
      function d3_scale_quantize(x0, x1, range) {
          var kx, i;
  
          function scale(x) {
              return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
          }
  
          function rescale() {
              kx = range.length / (x1 - x0);
              i = range.length - 1;
              return scale;
          }
  
          scale.domain = function (x) {
              if (!arguments.length) return [x0, x1];
              x0 = +x[0];
              x1 = +x[x.length - 1];
              return rescale();
          };
          scale.range = function (x) {
              if (!arguments.length) return range;
              range = x;
              return rescale();
          };
          scale.invertExtent = function (y) {
              y = range.indexOf(y);
              y = y < 0 ? NaN : y / kx + x0;
              return [y, y + 1 / kx];
          };
          scale.copy = function () {
              return d3_scale_quantize(x0, x1, range);
          };
          return rescale();
      }
  
      d3.scale.threshold = function () {
          return d3_scale_threshold([.5], [0, 1]);
      };
      function d3_scale_threshold(domain, range) {
          function scale(x) {
              if (x <= x) return range[d3.bisect(domain, x)];
          }
  
          scale.domain = function (_) {
              if (!arguments.length) return domain;
              domain = _;
              return scale;
          };
          scale.range = function (_) {
              if (!arguments.length) return range;
              range = _;
              return scale;
          };
          scale.invertExtent = function (y) {
              y = range.indexOf(y);
              return [domain[y - 1], domain[y]];
          };
          scale.copy = function () {
              return d3_scale_threshold(domain, range);
          };
          return scale;
      }
  
      d3.scale.identity = function () {
          return d3_scale_identity([0, 1]);
      };
      function d3_scale_identity(domain) {
          function identity(x) {
              return +x;
          }
  
          identity.invert = identity;
          identity.domain = identity.range = function (x) {
              if (!arguments.length) return domain;
              domain = x.map(identity);
              return identity;
          };
          identity.ticks = function (m) {
              return d3_scale_linearTicks(domain, m);
          };
          identity.tickFormat = function (m, format) {
              return d3_scale_linearTickFormat(domain, m, format);
          };
          identity.copy = function () {
              return d3_scale_identity(domain);
          };
          return identity;
      }
  
      d3.svg = {};
      function d3_zero() {
          return 0;
      }
  
      d3.svg.arc = function () {
          var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
  
          function arc() {
              var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
              if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
              if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
              var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
              if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
                  rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
                  if (!cw) p1 *= -1;
                  if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
                  if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
              }
              if (r1) {
                  x0 = r1 * Math.cos(a0 + p1);
                  y0 = r1 * Math.sin(a0 + p1);
                  x1 = r1 * Math.cos(a1 - p1);
                  y1 = r1 * Math.sin(a1 - p1);
                  var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
                  if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
                      var h1 = (a0 + a1) / 2;
                      x0 = r1 * Math.cos(h1);
                      y0 = r1 * Math.sin(h1);
                      x1 = y1 = null;
                  }
              } else {
                  x0 = y0 = 0;
              }
              if (r0) {
                  x2 = r0 * Math.cos(a1 - p0);
                  y2 = r0 * Math.sin(a1 - p0);
                  x3 = r0 * Math.cos(a0 + p0);
                  y3 = r0 * Math.sin(a0 + p0);
                  var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
                  if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
                      var h0 = (a0 + a1) / 2;
                      x2 = r0 * Math.cos(h0);
                      y2 = r0 * Math.sin(h0);
                      x3 = y3 = null;
                  }
              } else {
                  x2 = y2 = 0;
              }
              if ((rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
                  cr = r0 < r1 ^ cw ? 0 : 1;
                  var oc = x3 == null ? [x2, y2] : x1 == null ? [x0, y0] : d3_geom_polygonIntersect([x0, y0], [x3, y3], [x1, y1], [x2, y2]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
                  if (x1 != null) {
                      var rc1 = Math.min(rc, (r1 - lc) / (kc + 1)), t30 = d3_svg_arcCornerTangents(x3 == null ? [x2, y2] : [x3, y3], [x0, y0], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([x1, y1], [x2, y2], r1, rc1, cw);
                      if (rc === rc1) {
                          path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
                      } else {
                          path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
                      }
                  } else {
                      path.push("M", x0, ",", y0);
                  }
                  if (x3 != null) {
                      var rc0 = Math.min(rc, (r0 - lc) / (kc - 1)), t03 = d3_svg_arcCornerTangents([x0, y0], [x3, y3], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([x2, y2], x1 == null ? [x0, y0] : [x1, y1], r0, -rc0, cw);
                      if (rc === rc0) {
                          path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
                      } else {
                          path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
                      }
                  } else {
                      path.push("L", x2, ",", y2);
                  }
              } else {
                  path.push("M", x0, ",", y0);
                  if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
                  path.push("L", x2, ",", y2);
                  if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
              }
              path.push("Z");
              return path.join("");
          }
  
          function circleSegment(r1, cw) {
              return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
          }
  
          arc.innerRadius = function (v) {
              if (!arguments.length) return innerRadius;
              innerRadius = d3_functor(v);
              return arc;
          };
          arc.outerRadius = function (v) {
              if (!arguments.length) return outerRadius;
              outerRadius = d3_functor(v);
              return arc;
          };
          arc.cornerRadius = function (v) {
              if (!arguments.length) return cornerRadius;
              cornerRadius = d3_functor(v);
              return arc;
          };
          arc.padRadius = function (v) {
              if (!arguments.length) return padRadius;
              padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
              return arc;
          };
          arc.startAngle = function (v) {
              if (!arguments.length) return startAngle;
              startAngle = d3_functor(v);
              return arc;
          };
          arc.endAngle = function (v) {
              if (!arguments.length) return endAngle;
              endAngle = d3_functor(v);
              return arc;
          };
          arc.padAngle = function (v) {
              if (!arguments.length) return padAngle;
              padAngle = d3_functor(v);
              return arc;
          };
          arc.centroid = function () {
              var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
              return [Math.cos(a) * r, Math.sin(a) * r];
          };
          return arc;
      };
      var d3_svg_arcAuto = "auto";
  
      function d3_svg_arcInnerRadius(d) {
          return d.innerRadius;
      }
  
      function d3_svg_arcOuterRadius(d) {
          return d.outerRadius;
      }
  
      function d3_svg_arcStartAngle(d) {
          return d.startAngle;
      }
  
      function d3_svg_arcEndAngle(d) {
          return d.endAngle;
      }
  
      function d3_svg_arcPadAngle(d) {
          return d && d.padAngle;
      }
  
      function d3_svg_arcSweep(x0, y0, x1, y1) {
          return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
      }
  
      function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
          var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(r * r * d2 - D * D), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
          if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
          return [[cx0 - ox, cy0 - oy], [cx0 * r1 / r, cy0 * r1 / r]];
      }
  
      function d3_svg_line(projection) {
          var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
  
          function line(data) {
              var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
  
              function segment() {
                  segments.push("M", interpolate(projection(points), tension));
              }
  
              while (++i < n) {
                  if (defined.call(this, d = data[i], i)) {
                      points.push([+fx.call(this, d, i), +fy.call(this, d, i)]);
                  } else if (points.length) {
                      segment();
                      points = [];
                  }
              }
              if (points.length) segment();
              return segments.length ? segments.join("") : null;
          }
  
          line.x = function (_) {
              if (!arguments.length) return x;
              x = _;
              return line;
          };
          line.y = function (_) {
              if (!arguments.length) return y;
              y = _;
              return line;
          };
          line.defined = function (_) {
              if (!arguments.length) return defined;
              defined = _;
              return line;
          };
          line.interpolate = function (_) {
              if (!arguments.length) return interpolateKey;
              if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
              return line;
          };
          line.tension = function (_) {
              if (!arguments.length) return tension;
              tension = _;
              return line;
          };
          return line;
      }
  
      d3.svg.line = function () {
          return d3_svg_line(d3_identity);
      };
      var d3_svg_lineInterpolators = d3.map({
          linear: d3_svg_lineLinear,
          "linear-closed": d3_svg_lineLinearClosed,
          step: d3_svg_lineStep,
          "step-before": d3_svg_lineStepBefore,
          "step-after": d3_svg_lineStepAfter,
          basis: d3_svg_lineBasis,
          "basis-open": d3_svg_lineBasisOpen,
          "basis-closed": d3_svg_lineBasisClosed,
          bundle: d3_svg_lineBundle,
          cardinal: d3_svg_lineCardinal,
          "cardinal-open": d3_svg_lineCardinalOpen,
          "cardinal-closed": d3_svg_lineCardinalClosed,
          monotone: d3_svg_lineMonotone
      });
      d3_svg_lineInterpolators.forEach(function (key, value) {
          value.key = key;
          value.closed = /-closed$/.test(key);
      });
      function d3_svg_lineLinear(points) {
          return points.join("L");
      }
  
      function d3_svg_lineLinearClosed(points) {
          return d3_svg_lineLinear(points) + "Z";
      }
  
      function d3_svg_lineStep(points) {
          var i = 0, n = points.length, p = points[0], path = [p[0], ",", p[1]];
          while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
          if (n > 1) path.push("H", p[0]);
          return path.join("");
      }
  
      function d3_svg_lineStepBefore(points) {
          var i = 0, n = points.length, p = points[0], path = [p[0], ",", p[1]];
          while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
          return path.join("");
      }
  
      function d3_svg_lineStepAfter(points) {
          var i = 0, n = points.length, p = points[0], path = [p[0], ",", p[1]];
          while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
          return path.join("");
      }
  
      function d3_svg_lineCardinalOpen(points, tension) {
          return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
      }
  
      function d3_svg_lineCardinalClosed(points, tension) {
          return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]),
              points), d3_svg_lineCardinalTangents([points[points.length - 2]].concat(points, [points[1]]), tension));
      }
  
      function d3_svg_lineCardinal(points, tension) {
          return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
      }
  
      function d3_svg_lineHermite(points, tangents) {
          if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
              return d3_svg_lineLinear(points);
          }
          var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
          if (quad) {
              path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
              p0 = points[1];
              pi = 2;
          }
          if (tangents.length > 1) {
              t = tangents[1];
              p = points[pi];
              pi++;
              path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
              for (var i = 2; i < tangents.length; i++, pi++) {
                  p = points[pi];
                  t = tangents[i];
                  path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
              }
          }
          if (quad) {
              var lp = points[pi];
              path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
          }
          return path;
      }
  
      function d3_svg_lineCardinalTangents(points, tension) {
          var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
          while (++i < n) {
              p0 = p1;
              p1 = p2;
              p2 = points[i];
              tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
          }
          return tangents;
      }
  
      function d3_svg_lineBasis(points) {
          if (points.length < 3) return d3_svg_lineLinear(points);
          var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [x0, x0, x0, (pi = points[1])[0]], py = [y0, y0, y0, pi[1]], path = [x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)];
          points.push(points[n - 1]);
          while (++i <= n) {
              pi = points[i];
              px.shift();
              px.push(pi[0]);
              py.shift();
              py.push(pi[1]);
              d3_svg_lineBasisBezier(path, px, py);
          }
          points.pop();
          path.push("L", pi);
          return path.join("");
      }
  
      function d3_svg_lineBasisOpen(points) {
          if (points.length < 4) return d3_svg_lineLinear(points);
          var path = [], i = -1, n = points.length, pi, px = [0], py = [0];
          while (++i < 3) {
              pi = points[i];
              px.push(pi[0]);
              py.push(pi[1]);
          }
          path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
          --i;
          while (++i < n) {
              pi = points[i];
              px.shift();
              px.push(pi[0]);
              py.shift();
              py.push(pi[1]);
              d3_svg_lineBasisBezier(path, px, py);
          }
          return path.join("");
      }
  
      function d3_svg_lineBasisClosed(points) {
          var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
          while (++i < 4) {
              pi = points[i % n];
              px.push(pi[0]);
              py.push(pi[1]);
          }
          path = [d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)];
          --i;
          while (++i < m) {
              pi = points[i % n];
              px.shift();
              px.push(pi[0]);
              py.shift();
              py.push(pi[1]);
              d3_svg_lineBasisBezier(path, px, py);
          }
          return path.join("");
      }
  
      function d3_svg_lineBundle(points, tension) {
          var n = points.length - 1;
          if (n) {
              var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
              while (++i <= n) {
                  p = points[i];
                  t = i / n;
                  p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
                  p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
              }
          }
          return d3_svg_lineBasis(points);
      }
  
      function d3_svg_lineDot4(a, b) {
          return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
      }
  
      var d3_svg_lineBasisBezier1 = [0, 2 / 3, 1 / 3, 0], d3_svg_lineBasisBezier2 = [0, 1 / 3, 2 / 3, 0], d3_svg_lineBasisBezier3 = [0, 1 / 6, 2 / 3, 1 / 6];
  
      function d3_svg_lineBasisBezier(path, x, y) {
          path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
      }
  
      function d3_svg_lineSlope(p0, p1) {
          return (p1[1] - p0[1]) / (p1[0] - p0[0]);
      }
  
      function d3_svg_lineFiniteDifferences(points) {
          var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
          while (++i < j) {
              m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
          }
          m[i] = d;
          return m;
      }
  
      function d3_svg_lineMonotoneTangents(points) {
          var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
          while (++i < j) {
              d = d3_svg_lineSlope(points[i], points[i + 1]);
              if (abs(d) < ε) {
                  m[i] = m[i + 1] = 0;
              } else {
                  a = m[i] / d;
                  b = m[i + 1] / d;
                  s = a * a + b * b;
                  if (s > 9) {
                      s = d * 3 / Math.sqrt(s);
                      m[i] = s * a;
                      m[i + 1] = s * b;
                  }
              }
          }
          i = -1;
          while (++i <= j) {
              s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
              tangents.push([s || 0, m[i] * s || 0]);
          }
          return tangents;
      }
  
      function d3_svg_lineMonotone(points) {
          return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
      }
  
      d3.svg.line.radial = function () {
          var line = d3_svg_line(d3_svg_lineRadial);
          line.radius = line.x, delete line.x;
          line.angle = line.y, delete line.y;
          return line;
      };
      function d3_svg_lineRadial(points) {
          var point, i = -1, n = points.length, r, a;
          while (++i < n) {
              point = points[i];
              r = point[0];
              a = point[1] - halfπ;
              point[0] = r * Math.cos(a);
              point[1] = r * Math.sin(a);
          }
          return points;
      }
  
      function d3_svg_area(projection) {
          var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
  
          function area(data) {
              var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function () {
                  return x;
              } : d3_functor(x1), fy1 = y0 === y1 ? function () {
                  return y;
              } : d3_functor(y1), x, y;
  
              function segment() {
                  segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
              }
  
              while (++i < n) {
                  if (defined.call(this, d = data[i], i)) {
                      points0.push([x = +fx0.call(this, d, i), y = +fy0.call(this, d, i)]);
                      points1.push([+fx1.call(this, d, i), +fy1.call(this, d, i)]);
                  } else if (points0.length) {
                      segment();
                      points0 = [];
                      points1 = [];
                  }
              }
              if (points0.length) segment();
              return segments.length ? segments.join("") : null;
          }
  
          area.x = function (_) {
              if (!arguments.length) return x1;
              x0 = x1 = _;
              return area;
          };
          area.x0 = function (_) {
              if (!arguments.length) return x0;
              x0 = _;
              return area;
          };
          area.x1 = function (_) {
              if (!arguments.length) return x1;
              x1 = _;
              return area;
          };
          area.y = function (_) {
              if (!arguments.length) return y1;
              y0 = y1 = _;
              return area;
          };
          area.y0 = function (_) {
              if (!arguments.length) return y0;
              y0 = _;
              return area;
          };
          area.y1 = function (_) {
              if (!arguments.length) return y1;
              y1 = _;
              return area;
          };
          area.defined = function (_) {
              if (!arguments.length) return defined;
              defined = _;
              return area;
          };
          area.interpolate = function (_) {
              if (!arguments.length) return interpolateKey;
              if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
              interpolateReverse = interpolate.reverse || interpolate;
              L = interpolate.closed ? "M" : "L";
              return area;
          };
          area.tension = function (_) {
              if (!arguments.length) return tension;
              tension = _;
              return area;
          };
          return area;
      }
  
      d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
      d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
      d3.svg.area = function () {
          return d3_svg_area(d3_identity);
      };
      d3.svg.area.radial = function () {
          var area = d3_svg_area(d3_svg_lineRadial);
          area.radius = area.x, delete area.x;
          area.innerRadius = area.x0, delete area.x0;
          area.outerRadius = area.x1, delete area.x1;
          area.angle = area.y, delete area.y;
          area.startAngle = area.y0, delete area.y0;
          area.endAngle = area.y1, delete area.y1;
          return area;
      };
      d3.svg.chord = function () {
          var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
  
          function chord(d, i) {
              var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
              return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
          }
  
          function subgroup(self, f, d, i) {
              var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
              return {
                  r: r,
                  a0: a0,
                  a1: a1,
                  p0: [r * Math.cos(a0), r * Math.sin(a0)],
                  p1: [r * Math.cos(a1), r * Math.sin(a1)]
              };
          }
  
          function equals(a, b) {
              return a.a0 == b.a0 && a.a1 == b.a1;
          }
  
          function arc(r, p, a) {
              return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
          }
  
          function curve(r0, p0, r1, p1) {
              return "Q 0,0 " + p1;
          }
  
          chord.radius = function (v) {
              if (!arguments.length) return radius;
              radius = d3_functor(v);
              return chord;
          };
          chord.source = function (v) {
              if (!arguments.length) return source;
              source = d3_functor(v);
              return chord;
          };
          chord.target = function (v) {
              if (!arguments.length) return target;
              target = d3_functor(v);
              return chord;
          };
          chord.startAngle = function (v) {
              if (!arguments.length) return startAngle;
              startAngle = d3_functor(v);
              return chord;
          };
          chord.endAngle = function (v) {
              if (!arguments.length) return endAngle;
              endAngle = d3_functor(v);
              return chord;
          };
          return chord;
      };
      function d3_svg_chordRadius(d) {
          return d.radius;
      }
  
      d3.svg.diagonal = function () {
          var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
  
          function diagonal(d, i) {
              var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [p0, {
                  x: p0.x,
                  y: m
              }, {
                  x: p3.x,
                  y: m
              }, p3];
              p = p.map(projection);
              return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
          }
  
          diagonal.source = function (x) {
              if (!arguments.length) return source;
              source = d3_functor(x);
              return diagonal;
          };
          diagonal.target = function (x) {
              if (!arguments.length) return target;
              target = d3_functor(x);
              return diagonal;
          };
          diagonal.projection = function (x) {
              if (!arguments.length) return projection;
              projection = x;
              return diagonal;
          };
          return diagonal;
      };
      function d3_svg_diagonalProjection(d) {
          return [d.x, d.y];
      }
  
      d3.svg.diagonal.radial = function () {
          var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
          diagonal.projection = function (x) {
              return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
          };
          return diagonal;
      };
      function d3_svg_diagonalRadialProjection(projection) {
          return function () {
              var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
              return [r * Math.cos(a), r * Math.sin(a)];
          };
      }
  
      d3.svg.symbol = function () {
          var type = d3_svg_symbolType, size = d3_svg_symbolSize;
  
          function symbol(d, i) {
              return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
          }
  
          symbol.type = function (x) {
              if (!arguments.length) return type;
              type = d3_functor(x);
              return symbol;
          };
          symbol.size = function (x) {
              if (!arguments.length) return size;
              size = d3_functor(x);
              return symbol;
          };
          return symbol;
      };
      function d3_svg_symbolSize() {
          return 64;
      }
  
      function d3_svg_symbolType() {
          return "circle";
      }
  
      function d3_svg_symbolCircle(size) {
          var r = Math.sqrt(size / π);
          return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
      }
  
      var d3_svg_symbols = d3.map({
          circle: d3_svg_symbolCircle,
          cross: function (size) {
              var r = Math.sqrt(size / 5) / 2;
              return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
          },
          diamond: function (size) {
              var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
              return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
          },
          square: function (size) {
              var r = Math.sqrt(size) / 2;
              return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
          },
          "triangle-down": function (size) {
              var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
              return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
          },
          "triangle-up": function (size) {
              var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
              return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
          }
      });
      d3.svg.symbolTypes = d3_svg_symbols.keys();
      var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
      d3_selectionPrototype.transition = function (name) {
          var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
                  time: Date.now(),
                  ease: d3_ease_cubicInOut,
                  delay: 0,
                  duration: 250
              };
          for (var j = -1, m = this.length; ++j < m;) {
              subgroups.push(subgroup = []);
              for (var group = this[j], i = -1, n = group.length; ++i < n;) {
                  if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
                  subgroup.push(node);
              }
          }
          return d3_transition(subgroups, ns, id);
      };
      d3_selectionPrototype.interrupt = function (name) {
          return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
      };
      var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  
      function d3_selection_interruptNS(ns) {
          return function () {
              var lock, active;
              if ((lock = this[ns]) && (active = lock[lock.active])) {
                  if (--lock.count) delete lock[lock.active]; else delete this[ns];
                  lock.active += .5;
                  active.event && active.event.interrupt.call(this, this.__data__, active.index);
              }
          };
      }
  
      function d3_transition(groups, ns, id) {
          d3_subclass(groups, d3_transitionPrototype);
          groups.namespace = ns;
          groups.id = id;
          return groups;
      }
  
      var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
      d3_transitionPrototype.call = d3_selectionPrototype.call;
      d3_transitionPrototype.empty = d3_selectionPrototype.empty;
      d3_transitionPrototype.node = d3_selectionPrototype.node;
      d3_transitionPrototype.size = d3_selectionPrototype.size;
      d3.transition = function (selection, name) {
          return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3_selectionRoot.transition(selection);
      };
      d3.transition.prototype = d3_transitionPrototype;
      d3_transitionPrototype.select = function (selector) {
          var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
          selector = d3_selection_selector(selector);
          for (var j = -1, m = this.length; ++j < m;) {
              subgroups.push(subgroup = []);
              for (var group = this[j], i = -1, n = group.length; ++i < n;) {
                  if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
                      if ("__data__" in node) subnode.__data__ = node.__data__;
                      d3_transitionNode(subnode, i, ns, id, node[ns][id]);
                      subgroup.push(subnode);
                  } else {
                      subgroup.push(null);
                  }
              }
          }
          return d3_transition(subgroups, ns, id);
      };
      d3_transitionPrototype.selectAll = function (selector) {
          var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
          selector = d3_selection_selectorAll(selector);
          for (var j = -1, m = this.length; ++j < m;) {
              for (var group = this[j], i = -1, n = group.length; ++i < n;) {
                  if (node = group[i]) {
                      transition = node[ns][id];
                      subnodes = selector.call(node, node.__data__, i, j);
                      subgroups.push(subgroup = []);
                      for (var k = -1, o = subnodes.length; ++k < o;) {
                          if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
                          subgroup.push(subnode);
                      }
                  }
              }
          }
          return d3_transition(subgroups, ns, id);
      };
      d3_transitionPrototype.filter = function (filter) {
          var subgroups = [], subgroup, group, node;
          if (typeof filter !== "function") filter = d3_selection_filter(filter);
          for (var j = 0, m = this.length; j < m; j++) {
              subgroups.push(subgroup = []);
              for (var group = this[j], i = 0, n = group.length; i < n; i++) {
                  if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
                      subgroup.push(node);
                  }
              }
          }
          return d3_transition(subgroups, this.namespace, this.id);
      };
      d3_transitionPrototype.tween = function (name, tween) {
          var id = this.id, ns = this.namespace;
          if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
          return d3_selection_each(this, tween == null ? function (node) {
              node[ns][id].tween.remove(name);
          } : function (node) {
              node[ns][id].tween.set(name, tween);
          });
      };
      function d3_transition_tween(groups, name, value, tween) {
          var id = groups.id, ns = groups.namespace;
          return d3_selection_each(groups, typeof value === "function" ? function (node, i, j) {
              node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
          } : (value = tween(value), function (node) {
              node[ns][id].tween.set(name, value);
          }));
      }
  
      d3_transitionPrototype.attr = function (nameNS, value) {
          if (arguments.length < 2) {
              for (value in nameNS) this.attr(value, nameNS[value]);
              return this;
          }
          var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
  
          function attrNull() {
              this.removeAttribute(name);
          }
  
          function attrNullNS() {
              this.removeAttributeNS(name.space, name.local);
          }
  
          function attrTween(b) {
              return b == null ? attrNull : (b += "", function () {
                  var a = this.getAttribute(name), i;
                  return a !== b && (i = interpolate(a, b), function (t) {
                          this.setAttribute(name, i(t));
                      });
              });
          }
  
          function attrTweenNS(b) {
              return b == null ? attrNullNS : (b += "", function () {
                  var a = this.getAttributeNS(name.space, name.local), i;
                  return a !== b && (i = interpolate(a, b), function (t) {
                          this.setAttributeNS(name.space, name.local, i(t));
                      });
              });
          }
  
          return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
      };
      d3_transitionPrototype.attrTween = function (nameNS, tween) {
          var name = d3.ns.qualify(nameNS);
  
          function attrTween(d, i) {
              var f = tween.call(this, d, i, this.getAttribute(name));
              return f && function (t) {
                      this.setAttribute(name, f(t));
                  };
          }
  
          function attrTweenNS(d, i) {
              var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
              return f && function (t) {
                      this.setAttributeNS(name.space, name.local, f(t));
                  };
          }
  
          return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
      };
      d3_transitionPrototype.style = function (name, value, priority) {
          var n = arguments.length;
          if (n < 3) {
              if (typeof name !== "string") {
                  if (n < 2) value = "";
                  for (priority in name) this.style(priority, name[priority], value);
                  return this;
              }
              priority = "";
          }
          function styleNull() {
              this.style.removeProperty(name);
          }
  
          function styleString(b) {
              return b == null ? styleNull : (b += "", function () {
                  var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i;
                  return a !== b && (i = d3_interpolate(a, b), function (t) {
                          this.style.setProperty(name, i(t), priority);
                      });
              });
          }
  
          return d3_transition_tween(this, "style." + name, value, styleString);
      };
      d3_transitionPrototype.styleTween = function (name, tween, priority) {
          if (arguments.length < 3) priority = "";
          function styleTween(d, i) {
              var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name));
              return f && function (t) {
                      this.style.setProperty(name, f(t), priority);
                  };
          }
  
          return this.tween("style." + name, styleTween);
      };
      d3_transitionPrototype.text = function (value) {
          return d3_transition_tween(this, "text", value, d3_transition_text);
      };
      function d3_transition_text(b) {
          if (b == null) b = "";
          return function () {
              this.textContent = b;
          };
      }
  
      d3_transitionPrototype.remove = function () {
          var ns = this.namespace;
          return this.each("end.transition", function () {
              var p;
              if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
          });
      };
      d3_transitionPrototype.ease = function (value) {
          var id = this.id, ns = this.namespace;
          if (arguments.length < 1) return this.node()[ns][id].ease;
          if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
          return d3_selection_each(this, function (node) {
              node[ns][id].ease = value;
          });
      };
      d3_transitionPrototype.delay = function (value) {
          var id = this.id, ns = this.namespace;
          if (arguments.length < 1) return this.node()[ns][id].delay;
          return d3_selection_each(this, typeof value === "function" ? function (node, i, j) {
              node[ns][id].delay = +value.call(node, node.__data__, i, j);
          } : (value = +value, function (node) {
              node[ns][id].delay = value;
          }));
      };
      d3_transitionPrototype.duration = function (value) {
          var id = this.id, ns = this.namespace;
          if (arguments.length < 1) return this.node()[ns][id].duration;
          return d3_selection_each(this, typeof value === "function" ? function (node, i, j) {
              node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
          } : (value = Math.max(1, value), function (node) {
              node[ns][id].duration = value;
          }));
      };
      d3_transitionPrototype.each = function (type, listener) {
          var id = this.id, ns = this.namespace;
          if (arguments.length < 2) {
              var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
              try {
                  d3_transitionInheritId = id;
                  d3_selection_each(this, function (node, i, j) {
                      d3_transitionInherit = node[ns][id];
                      type.call(node, node.__data__, i, j);
                  });
              } finally {
                  d3_transitionInherit = inherit;
                  d3_transitionInheritId = inheritId;
              }
          } else {
              d3_selection_each(this, function (node) {
                  var transition = node[ns][id];
                  (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
              });
          }
          return this;
      };
      d3_transitionPrototype.transition = function () {
          var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
          for (var j = 0, m = this.length; j < m; j++) {
              subgroups.push(subgroup = []);
              for (var group = this[j], i = 0, n = group.length; i < n; i++) {
                  if (node = group[i]) {
                      transition = node[ns][id0];
                      d3_transitionNode(node, i, ns, id1, {
                          time: transition.time,
                          ease: transition.ease,
                          delay: transition.delay + transition.duration,
                          duration: transition.duration
                      });
                  }
                  subgroup.push(node);
              }
          }
          return d3_transition(subgroups, ns, id1);
      };
      function d3_transitionNamespace(name) {
          return name == null ? "__transition__" : "__transition_" + name + "__";
      }
  
      function d3_transitionNode(node, i, ns, id, inherit) {
          var lock = node[ns] || (node[ns] = {
                  active: 0,
                  count: 0
              }), transition = lock[id];
          if (!transition) {
              var time = inherit.time;
              transition = lock[id] = {
                  tween: new d3_Map(),
                  time: time,
                  delay: inherit.delay,
                  duration: inherit.duration,
                  ease: inherit.ease,
                  index: i
              };
              inherit = null;
              ++lock.count;
              d3.timer(function (elapsed) {
                  var delay = transition.delay, duration, ease, timer = d3_timer_active, tweened = [];
                  timer.t = delay + time;
                  if (delay <= elapsed) return start(elapsed - delay);
                  timer.c = start;
                  function start(elapsed) {
                      if (lock.active > id) return stop();
                      var active = lock[lock.active];
                      if (active) {
                          --lock.count;
                          delete lock[lock.active];
                          active.event && active.event.interrupt.call(node, node.__data__, active.index);
                      }
                      lock.active = id;
                      transition.event && transition.event.start.call(node, node.__data__, i);
                      transition.tween.forEach(function (key, value) {
                          if (value = value.call(node, node.__data__, i)) {
                              tweened.push(value);
                          }
                      });
                      ease = transition.ease;
                      duration = transition.duration;
                      d3.timer(function () {
                          timer.c = tick(elapsed || 1) ? d3_true : tick;
                          return 1;
                      }, 0, time);
                  }
  
                  function tick(elapsed) {
                      if (lock.active !== id) return 1;
                      var t = elapsed / duration, e = ease(t), n = tweened.length;
                      while (n > 0) {
                          tweened[--n].call(node, e);
                      }
                      if (t >= 1) {
                          transition.event && transition.event.end.call(node, node.__data__, i);
                          return stop();
                      }
                  }
  
                  function stop() {
                      if (--lock.count) delete lock[id]; else delete node[ns];
                      return 1;
                  }
              }, 0, time);
          }
      }
  
      d3.svg.axis = function () {
          var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [10], tickValues = null, tickFormat_;
  
          function axis(g) {
              g.each(function () {
                  var g = d3.select(this);
                  var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
                  var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
                  var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([0]), pathUpdate = (path.enter().append("path").attr("class", "domain"),
                      d3.transition(path));
                  tickEnter.append("line");
                  tickEnter.append("text");
                  var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
                  if (orient === "bottom" || orient === "top") {
                      tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
                      text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
                      pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
                  } else {
                      tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
                      text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
                      pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
                  }
                  lineEnter.attr(y2, sign * innerTickSize);
                  textEnter.attr(y1, sign * tickSpacing);
                  lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
                  textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
                  if (scale1.rangeBand) {
                      var x = scale1, dx = x.rangeBand() / 2;
                      scale0 = scale1 = function (d) {
                          return x(d) + dx;
                      };
                  } else if (scale0.rangeBand) {
                      scale0 = scale1;
                  } else {
                      tickExit.call(tickTransform, scale1, scale0);
                  }
                  tickEnter.call(tickTransform, scale0, scale1);
                  tickUpdate.call(tickTransform, scale1, scale1);
              });
          }
  
          axis.scale = function (x) {
              if (!arguments.length) return scale;
              scale = x;
              return axis;
          };
          axis.orient = function (x) {
              if (!arguments.length) return orient;
              orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
              return axis;
          };
          axis.ticks = function () {
              if (!arguments.length) return tickArguments_;
              tickArguments_ = arguments;
              return axis;
          };
          axis.tickValues = function (x) {
              if (!arguments.length) return tickValues;
              tickValues = x;
              return axis;
          };
          axis.tickFormat = function (x) {
              if (!arguments.length) return tickFormat_;
              tickFormat_ = x;
              return axis;
          };
          axis.tickSize = function (x) {
              var n = arguments.length;
              if (!n) return innerTickSize;
              innerTickSize = +x;
              outerTickSize = +arguments[n - 1];
              return axis;
          };
          axis.innerTickSize = function (x) {
              if (!arguments.length) return innerTickSize;
              innerTickSize = +x;
              return axis;
          };
          axis.outerTickSize = function (x) {
              if (!arguments.length) return outerTickSize;
              outerTickSize = +x;
              return axis;
          };
          axis.tickPadding = function (x) {
              if (!arguments.length) return tickPadding;
              tickPadding = +x;
              return axis;
          };
          axis.tickSubdivide = function () {
              return arguments.length && axis;
          };
          return axis;
      };
      var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
          top: 1,
          right: 1,
          bottom: 1,
          left: 1
      };
  
      function d3_svg_axisX(selection, x0, x1) {
          selection.attr("transform", function (d) {
              var v0 = x0(d);
              return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
          });
      }
  
      function d3_svg_axisY(selection, y0, y1) {
          selection.attr("transform", function (d) {
              var v0 = y0(d);
              return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
          });
      }
  
      d3.svg.brush = function () {
          var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [0, 0], yExtent = [0, 0], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
  
          function brush(g) {
              g.each(function () {
                  var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
                  var background = g.selectAll(".background").data([0]);
                  background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
                  g.selectAll(".extent").data([0]).enter().append("rect").attr("class", "extent").style("cursor", "move");
                  var resize = g.selectAll(".resize").data(resizes, d3_identity);
                  resize.exit().remove();
                  resize.enter().append("g").attr("class", function (d) {
                      return "resize " + d;
                  }).style("cursor", function (d) {
                      return d3_svg_brushCursor[d];
                  }).append("rect").attr("x", function (d) {
                      return /[ew]$/.test(d) ? -3 : null;
                  }).attr("y", function (d) {
                      return /^[ns]/.test(d) ? -3 : null;
                  }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
                  resize.style("display", brush.empty() ? "none" : null);
                  var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
                  if (x) {
                      range = d3_scaleRange(x);
                      backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
                      redrawX(gUpdate);
                  }
                  if (y) {
                      range = d3_scaleRange(y);
                      backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
                      redrawY(gUpdate);
                  }
                  redraw(gUpdate);
              });
          }
  
          brush.event = function (g) {
              g.each(function () {
                  var event_ = event.of(this, arguments), extent1 = {
                      x: xExtent,
                      y: yExtent,
                      i: xExtentDomain,
                      j: yExtentDomain
                  }, extent0 = this.__chart__ || extent1;
                  this.__chart__ = extent1;
                  if (d3_transitionInheritId) {
                      d3.select(this).transition().each("start.brush", function () {
                          xExtentDomain = extent0.i;
                          yExtentDomain = extent0.j;
                          xExtent = extent0.x;
                          yExtent = extent0.y;
                          event_({
                              type: "brushstart"
                          });
                      }).tween("brush:brush", function () {
                          var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
                          xExtentDomain = yExtentDomain = null;
                          return function (t) {
                              xExtent = extent1.x = xi(t);
                              yExtent = extent1.y = yi(t);
                              event_({
                                  type: "brush",
                                  mode: "resize"
                              });
                          };
                      }).each("end.brush", function () {
                          xExtentDomain = extent1.i;
                          yExtentDomain = extent1.j;
                          event_({
                              type: "brush",
                              mode: "resize"
                          });
                          event_({
                              type: "brushend"
                          });
                      });
                  } else {
                      event_({
                          type: "brushstart"
                      });
                      event_({
                          type: "brush",
                          mode: "resize"
                      });
                      event_({
                          type: "brushend"
                      });
                  }
              });
          };
          function redraw(g) {
              g.selectAll(".resize").attr("transform", function (d) {
                  return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
              });
          }
  
          function redrawX(g) {
              g.select(".extent").attr("x", xExtent[0]);
              g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
          }
  
          function redrawY(g) {
              g.select(".extent").attr("y", yExtent[0]);
              g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
          }
  
          function brushstart() {
              var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(), center, origin = d3.mouse(target), offset;
              var w = d3.select(d3_window).on("keydown.brush", keydown).on("keyup.brush", keyup);
              if (d3.event.changedTouches) {
                  w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
              } else {
                  w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
              }
              g.interrupt().selectAll("*").interrupt();
              if (dragging) {
                  origin[0] = xExtent[0] - origin[0];
                  origin[1] = yExtent[0] - origin[1];
              } else if (resizing) {
                  var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
                  offset = [xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1]];
                  origin[0] = xExtent[ex];
                  origin[1] = yExtent[ey];
              } else if (d3.event.altKey) center = origin.slice();
              g.style("pointer-events", "none").selectAll(".resize").style("display", null);
              d3.select("body").style("cursor", eventTarget.style("cursor"));
              event_({
                  type: "brushstart"
              });
              brushmove();
              function keydown() {
                  if (d3.event.keyCode == 32) {
                      if (!dragging) {
                          center = null;
                          origin[0] -= xExtent[1];
                          origin[1] -= yExtent[1];
                          dragging = 2;
                      }
                      d3_eventPreventDefault();
                  }
              }
  
              function keyup() {
                  if (d3.event.keyCode == 32 && dragging == 2) {
                      origin[0] += xExtent[1];
                      origin[1] += yExtent[1];
                      dragging = 0;
                      d3_eventPreventDefault();
                  }
              }
  
              function brushmove() {
                  var point = d3.mouse(target), moved = false;
                  if (offset) {
                      point[0] += offset[0];
                      point[1] += offset[1];
                  }
                  if (!dragging) {
                      if (d3.event.altKey) {
                          if (!center) center = [(xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2];
                          origin[0] = xExtent[+(point[0] < center[0])];
                          origin[1] = yExtent[+(point[1] < center[1])];
                      } else center = null;
                  }
                  if (resizingX && move1(point, x, 0)) {
                      redrawX(g);
                      moved = true;
                  }
                  if (resizingY && move1(point, y, 1)) {
                      redrawY(g);
                      moved = true;
                  }
                  if (moved) {
                      redraw(g);
                      event_({
                          type: "brush",
                          mode: dragging ? "move" : "resize"
                      });
                  }
              }
  
              function move1(point, scale, i) {
                  var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
                  if (dragging) {
                      r0 -= position;
                      r1 -= size + position;
                  }
                  min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
                  if (dragging) {
                      max = (min += position) + size;
                  } else {
                      if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
                      if (position < min) {
                          max = min;
                          min = position;
                      } else {
                          max = position;
                      }
                  }
                  if (extent[0] != min || extent[1] != max) {
                      if (i) yExtentDomain = null; else xExtentDomain = null;
                      extent[0] = min;
                      extent[1] = max;
                      return true;
                  }
              }
  
              function brushend() {
                  brushmove();
                  g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
                  d3.select("body").style("cursor", null);
                  w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
                  dragRestore();
                  event_({
                      type: "brushend"
                  });
              }
          }
  
          brush.x = function (z) {
              if (!arguments.length) return x;
              x = z;
              resizes = d3_svg_brushResizes[!x << 1 | !y];
              return brush;
          };
          brush.y = function (z) {
              if (!arguments.length) return y;
              y = z;
              resizes = d3_svg_brushResizes[!x << 1 | !y];
              return brush;
          };
          brush.clamp = function (z) {
              if (!arguments.length) return x && y ? [xClamp, yClamp] : x ? xClamp : y ? yClamp : null;
              if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
              return brush;
          };
          brush.extent = function (z) {
              var x0, x1, y0, y1, t;
              if (!arguments.length) {
                  if (x) {
                      if (xExtentDomain) {
                          x0 = xExtentDomain[0], x1 = xExtentDomain[1];
                      } else {
                          x0 = xExtent[0], x1 = xExtent[1];
                          if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
                          if (x1 < x0) t = x0, x0 = x1, x1 = t;
                      }
                  }
                  if (y) {
                      if (yExtentDomain) {
                          y0 = yExtentDomain[0], y1 = yExtentDomain[1];
                      } else {
                          y0 = yExtent[0], y1 = yExtent[1];
                          if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
                          if (y1 < y0) t = y0, y0 = y1, y1 = t;
                      }
                  }
                  return x && y ? [[x0, y0], [x1, y1]] : x ? [x0, x1] : y && [y0, y1];
              }
              if (x) {
                  x0 = z[0], x1 = z[1];
                  if (y) x0 = x0[0], x1 = x1[0];
                  xExtentDomain = [x0, x1];
                  if (x.invert) x0 = x(x0), x1 = x(x1);
                  if (x1 < x0) t = x0, x0 = x1, x1 = t;
                  if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [x0, x1];
              }
              if (y) {
                  y0 = z[0], y1 = z[1];
                  if (x) y0 = y0[1], y1 = y1[1];
                  yExtentDomain = [y0, y1];
                  if (y.invert) y0 = y(y0), y1 = y(y1);
                  if (y1 < y0) t = y0, y0 = y1, y1 = t;
                  if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [y0, y1];
              }
              return brush;
          };
          brush.clear = function () {
              if (!brush.empty()) {
                  xExtent = [0, 0], yExtent = [0, 0];
                  xExtentDomain = yExtentDomain = null;
              }
              return brush;
          };
          brush.empty = function () {
              return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
          };
          return d3.rebind(brush, event, "on");
      };
      var d3_svg_brushCursor = {
          n: "ns-resize",
          e: "ew-resize",
          s: "ns-resize",
          w: "ew-resize",
          nw: "nwse-resize",
          ne: "nesw-resize",
          se: "nwse-resize",
          sw: "nesw-resize"
      };
      var d3_svg_brushResizes = [["n", "e", "s", "w", "nw", "ne", "se", "sw"], ["e", "w"], ["n", "s"], []];
      var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
      var d3_time_formatUtc = d3_time_format.utc;
      var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
      d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
      function d3_time_formatIsoNative(date) {
          return date.toISOString();
      }
  
      d3_time_formatIsoNative.parse = function (string) {
          var date = new Date(string);
          return isNaN(date) ? null : date;
      };
      d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
      d3_time.second = d3_time_interval(function (date) {
          return new d3_date(Math.floor(date / 1e3) * 1e3);
      }, function (date, offset) {
          date.setTime(date.getTime() + Math.floor(offset) * 1e3);
      }, function (date) {
          return date.getSeconds();
      });
      d3_time.seconds = d3_time.second.range;
      d3_time.seconds.utc = d3_time.second.utc.range;
      d3_time.minute = d3_time_interval(function (date) {
          return new d3_date(Math.floor(date / 6e4) * 6e4);
      }, function (date, offset) {
          date.setTime(date.getTime() + Math.floor(offset) * 6e4);
      }, function (date) {
          return date.getMinutes();
      });
      d3_time.minutes = d3_time.minute.range;
      d3_time.minutes.utc = d3_time.minute.utc.range;
      d3_time.hour = d3_time_interval(function (date) {
          var timezone = date.getTimezoneOffset() / 60;
          return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
      }, function (date, offset) {
          date.setTime(date.getTime() + Math.floor(offset) * 36e5);
      }, function (date) {
          return date.getHours();
      });
      d3_time.hours = d3_time.hour.range;
      d3_time.hours.utc = d3_time.hour.utc.range;
      d3_time.month = d3_time_interval(function (date) {
          date = d3_time.day(date);
          date.setDate(1);
          return date;
      }, function (date, offset) {
          date.setMonth(date.getMonth() + offset);
      }, function (date) {
          return date.getMonth();
      });
      d3_time.months = d3_time.month.range;
      d3_time.months.utc = d3_time.month.utc.range;
      function d3_time_scale(linear, methods, format) {
          function scale(x) {
              return linear(x);
          }
  
          scale.invert = function (x) {
              return d3_time_scaleDate(linear.invert(x));
          };
          scale.domain = function (x) {
              if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
              linear.domain(x);
              return scale;
          };
          function tickMethod(extent, count) {
              var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
              return i == d3_time_scaleSteps.length ? [methods.year, d3_scale_linearTickRange(extent.map(function (d) {
                  return d / 31536e6;
              }), count)[2]] : !i ? [d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2]] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
          }
  
          scale.nice = function (interval, skip) {
              var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
              if (method) interval = method[0], skip = method[1];
              function skipped(date) {
                  return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
              }
  
              return scale.domain(d3_scale_nice(domain, skip > 1 ? {
                  floor: function (date) {
                      while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
                      return date;
                  },
                  ceil: function (date) {
                      while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
                      return date;
                  }
              } : interval));
          };
          scale.ticks = function (interval, skip) {
              var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [{
                  range: interval
              }, skip];
              if (method) interval = method[0], skip = method[1];
              return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
          };
          scale.tickFormat = function () {
              return format;
          };
          scale.copy = function () {
              return d3_time_scale(linear.copy(), methods, format);
          };
          return d3_scale_linearRebind(scale, linear);
      }
  
      function d3_time_scaleDate(t) {
          return new Date(t);
      }
  
      var d3_time_scaleSteps = [1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6];
      var d3_time_scaleLocalMethods = [[d3_time.second, 1], [d3_time.second, 5], [d3_time.second, 15], [d3_time.second, 30], [d3_time.minute, 1], [d3_time.minute, 5], [d3_time.minute, 15], [d3_time.minute, 30], [d3_time.hour, 1], [d3_time.hour, 3], [d3_time.hour, 6], [d3_time.hour, 12], [d3_time.day, 1], [d3_time.day, 2], [d3_time.week, 1], [d3_time.month, 1], [d3_time.month, 3], [d3_time.year, 1]];
      var d3_time_scaleLocalFormat = d3_time_format.multi([[".%L", function (d) {
          return d.getMilliseconds();
      }], [":%S", function (d) {
          return d.getSeconds();
      }], ["%I:%M", function (d) {
          return d.getMinutes();
      }], ["%I %p", function (d) {
          return d.getHours();
      }], ["%a %d", function (d) {
          return d.getDay() && d.getDate() != 1;
      }], ["%b %d", function (d) {
          return d.getDate() != 1;
      }], ["%B", function (d) {
          return d.getMonth();
      }], ["%Y", d3_true]]);
      var d3_time_scaleMilliseconds = {
          range: function (start, stop, step) {
              return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
          },
          floor: d3_identity,
          ceil: d3_identity
      };
      d3_time_scaleLocalMethods.year = d3_time.year;
      d3_time.scale = function () {
          return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
      };
      var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function (m) {
          return [m[0].utc, m[1]];
      });
      var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([[".%L", function (d) {
          return d.getUTCMilliseconds();
      }], [":%S", function (d) {
          return d.getUTCSeconds();
      }], ["%I:%M", function (d) {
          return d.getUTCMinutes();
      }], ["%I %p", function (d) {
          return d.getUTCHours();
      }], ["%a %d", function (d) {
          return d.getUTCDay() && d.getUTCDate() != 1;
      }], ["%b %d", function (d) {
          return d.getUTCDate() != 1;
      }], ["%B", function (d) {
          return d.getUTCMonth();
      }], ["%Y", d3_true]]);
      d3_time_scaleUtcMethods.year = d3_time.year.utc;
      d3_time.scale.utc = function () {
          return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
      };
      d3.text = d3_xhrType(function (request) {
          return request.responseText;
      });
      d3.json = function (url, callback) {
          return d3_xhr(url, "application/json", d3_json, callback);
      };
      function d3_json(request) {
          return JSON.parse(request.responseText);
      }
  
      d3.html = function (url, callback) {
          return d3_xhr(url, "text/html", d3_html, callback);
      };
      function d3_html(request) {
          var range = d3_document.createRange();
          range.selectNode(d3_document.body);
          return range.createContextualFragment(request.responseText);
      }
  
      d3.xml = d3_xhrType(function (request) {
          return request.responseXML;
      });
      if (typeof define === "function" && define.amd) define(d3); else if (typeof module === "object" && module.exports) module.exports = d3;
      this.d3 = d3;
  }();