text: /* Javascript plotting library for jQuery, version 0.8.3.
   
   Copyright (c) 2007-2014 IOLA and Ole Laursen.
   Licensed under the MIT license.
   
   */
  
  // first an inline dependency, jquery.colorhelpers.js, we inline it here
  // for convenience
  
  /* Plugin for jQuery for working with colors.
   *
   * Version 1.1.
   *
   * Inspiration from jQuery color animation plugin by John Resig.
   *
   * Released under the MIT license by Ole Laursen, October 2009.
   *
   * Examples:
   *
   *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
   *   var c = $.color.extract($("#mydiv"), 'background-color');
   *   console.log(c.r, c.g, c.b, c.a);
   *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
   *
   * Note that .scale() and .add() return the same modified object
   * instead of making a new one.
   *
   * V. 1.1: Fix error handling so e.g. parsing an empty string does
   * produce a color rather than just crashing.
   */
  (function($){$.color = {}; $.color.make = function(r, g, b, a){var o = {}; o.r = r || 0; o.g = g || 0; o.b = b || 0; o.a = a != null?a:1; o.add = function(c, d){for (var i = 0; i < c.length; ++i)o[c.charAt(i)] += d; return o.normalize()}; o.scale = function(c, f){for (var i = 0; i < c.length; ++i)o[c.charAt(i)] *= f; return o.normalize()}; o.toString = function(){if (o.a >= 1){return"rgb(" + [o.r, o.g, o.b].join(",") + ")"} else{return"rgba(" + [o.r, o.g, o.b, o.a].join(",") + ")"}}; o.normalize = function(){function clamp(min, value, max){return value < min?min:value > max?max:value}o.r = clamp(0, parseInt(o.r), 255); o.g = clamp(0, parseInt(o.g), 255); o.b = clamp(0, parseInt(o.b), 255); o.a = clamp(0, o.a, 1); return o}; o.clone = function(){return $.color.make(o.r, o.b, o.g, o.a)}; return o.normalize()}; $.color.extract = function(elem, css){var c; do{c = elem.css(css).toLowerCase(); if (c != "" && c != "transparent")break; elem = elem.parent()}while (elem.length && !$.nodeName(elem.get(0), "body")); if (c == "rgba(0, 0, 0, 0)")c = "transparent"; return $.color.parse(c)}; $.color.parse = function(str){var res, m = $.color.make; if (res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10)); if (res = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4])); if (res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55); if (res = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55, parseFloat(res[4])); if (res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16)); if (res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1] + res[1], 16), parseInt(res[2] + res[2], 16), parseInt(res[3] + res[3], 16)); var name = $.trim(str).toLowerCase(); if (name == "transparent")return m(255, 255, 255, 0);  else{res = lookupColors[name] || [0, 0, 0]; return m(res[0], res[1], res[2])}}; var lookupColors = {aqua:[0, 255, 255], azure:[240, 255, 255], beige:[245, 245, 220], black:[0, 0, 0], blue:[0, 0, 255], brown:[165, 42, 42], cyan:[0, 255, 255], darkblue:[0, 0, 139], darkcyan:[0, 139, 139], darkgrey:[169, 169, 169], darkgreen:[0, 100, 0], darkkhaki:[189, 183, 107], darkmagenta:[139, 0, 139], darkolivegreen:[85, 107, 47], darkorange:[255, 140, 0], darkorchid:[153, 50, 204], darkred:[139, 0, 0], darksalmon:[233, 150, 122], darkviolet:[148, 0, 211], fuchsia:[255, 0, 255], gold:[255, 215, 0], green:[0, 128, 0], indigo:[75, 0, 130], khaki:[240, 230, 140], lightblue:[173, 216, 230], lightcyan:[224, 255, 255], lightgreen:[144, 238, 144], lightgrey:[211, 211, 211], lightpink:[255, 182, 193], lightyellow:[255, 255, 224], lime:[0, 255, 0], magenta:[255, 0, 255], maroon:[128, 0, 0], navy:[0, 0, 128], olive:[128, 128, 0], orange:[255, 165, 0], pink:[255, 192, 203], purple:[128, 0, 128], violet:[128, 0, 128], red:[255, 0, 0], silver:[192, 192, 192], white:[255, 255, 255], yellow:[255, 255, 0]}})(jQuery);
  // the actual Flot code
          (function($) {
  
          // Cache the prototype hasOwnProperty for faster access
  
          var hasOwnProperty = Object.prototype.hasOwnProperty;
                  // A shim to provide 'detach' to jQuery versions prior to 1.4.  Using a DOM
                  // operation produces the same effect as detach, i.e. removing the element
                  // without touching its jQuery data.
  
                  // Do not merge this into Flot 0.9, since it requires jQuery 1.4.4+.
  
                  if (!$.fn.detach) {
          $.fn.detach = function() {
          return this.each(function() {
          if (this.parentNode) {
          this.parentNode.removeChild(this);
          }
          });
          };
          }
  
          ///////////////////////////////////////////////////////////////////////////
          // The Canvas object is a wrapper around an HTML5 <canvas> tag.
          //
          // @constructor
          // @param {string} cls List of classes to apply to the canvas.
          // @param {element} container Element onto which to append the canvas.
          //
          // Requiring a container is a little iffy, but unfortunately canvas
          // operations don't work unless the canvas is attached to the DOM.
  
          function Canvas(cls, container) {
  
          var element = container.children("." + cls)[0];
                  if (element == null) {
  
          element = document.createElement("canvas");
                  element.className = cls;
                  $(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
                  .appendTo(container);
                  // If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
  
                  if (!element.getContext) {
          if (window.G_vmlCanvasManager) {
          element = window.G_vmlCanvasManager.initElement(element);
          } else {
          throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
          }
          }
          }
  
          this.element = element;
                  var context = this.context = element.getContext("2d");
                  // Determine the screen's ratio of physical to device-independent
                  // pixels.  This is the ratio between the canvas width that the browser
                  // advertises and the number of pixels actually present in that space.
  
                  // The iPhone 4, for example, has a device-independent width of 320px,
                  // but its screen is actually 640px wide.  It therefore has a pixel
                  // ratio of 2, while most normal devices have a ratio of 1.
  
                  var devicePixelRatio = window.devicePixelRatio || 1,
                  backingStoreRatio =
                  context.webkitBackingStorePixelRatio ||
                  context.mozBackingStorePixelRatio ||
                  context.msBackingStorePixelRatio ||
                  context.oBackingStorePixelRatio ||
                  context.backingStorePixelRatio || 1;
                  this.pixelRatio = devicePixelRatio / backingStoreRatio;
                  // Size the canvas to match the internal dimensions of its container
  
                  this.resize(container.width(), container.height());
                  // Collection of HTML div layers for text overlaid onto the canvas
  
                  this.textContainer = null;
                  this.text = {};
                  // Cache of text fragments and metrics, so we can avoid expensively
                  // re-calculating them when the plot is re-rendered in a loop.
  
                  this._textCache = {};
          }
  
          // Resizes the canvas to the given dimensions.
          //
          // @param {number} width New width of the canvas, in pixels.
          // @param {number} width New height of the canvas, in pixels.
  
          Canvas.prototype.resize = function(width, height) {
  
          if (width <= 0 || height <= 0) {
          throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
          }
  
          var element = this.element,
                  context = this.context,
                  pixelRatio = this.pixelRatio;
                  // Resize the canvas, increasing its density based on the display's
                  // pixel ratio; basically giving it more pixels without increasing the
                  // size of its element, to take advantage of the fact that retina
                  // displays have that many more pixels in the same advertised space.
  
                  // Resizing should reset the state (excanvas seems to be buggy though)
  
                  if (this.width != width) {
          element.width = width * pixelRatio;
                  element.style.width = width + "px";
                  this.width = width;
          }
  
          if (this.height != height) {
          element.height = height * pixelRatio;
                  element.style.height = height + "px";
                  this.height = height;
          }
  
          // Save the context, so we can reset in case we get replotted.  The
          // restore ensure that we're really back at the initial state, and
          // should be safe even if we haven't saved the initial state yet.
  
          context.restore();
                  context.save();
                  // Scale the coordinate space to match the display density; so even though we
                  // may have twice as many pixels, we still want lines and other drawing to
                  // appear at the same size; the extra pixels will just make them crisper.
  
                  context.scale(pixelRatio, pixelRatio);
          };
                  // Clears the entire canvas area, not including any overlaid HTML text
  
                  Canvas.prototype.clear = function() {
                  this.context.clearRect(0, 0, this.width, this.height);
                  };
                  // Finishes rendering the canvas, including managing the text overlay.
  
                  Canvas.prototype.render = function() {
  
                  var cache = this._textCache;
                          // For each text layer, add elements marked as active that haven't
                          // already been rendered, and remove those that are no longer active.
  
                          for (var layerKey in cache) {
                  if (hasOwnProperty.call(cache, layerKey)) {
  
                  var layer = this.getTextLayer(layerKey),
                          layerCache = cache[layerKey];
                          layer.hide();
                          for (var styleKey in layerCache) {
                  if (hasOwnProperty.call(layerCache, styleKey)) {
                  var styleCache = layerCache[styleKey];
                          for (var key in styleCache) {
                  if (hasOwnProperty.call(styleCache, key)) {
  
                  var positions = styleCache[key].positions;
                          for (var i = 0, position; position = positions[i]; i++) {
                  if (position.active) {
                  if (!position.rendered) {
                  layer.append(position.element);
                          position.rendered = true;
                  }
                  } else {
                  positions.splice(i--, 1);
                          if (position.rendered) {
                  position.element.detach();
                  }
                  }
                  }
  
                  if (positions.length == 0) {
                  delete styleCache[key];
                  }
                  }
                  }
                  }
                  }
  
                  layer.show();
                  }
                  }
                  };
                  // Creates (if necessary) and returns the text overlay container.
                  //
                  // @param {string} classes String of space-separated CSS classes used to
                  //     uniquely identify the text layer.
                  // @return {object} The jQuery-wrapped text-layer div.
  
                  Canvas.prototype.getTextLayer = function(classes) {
  
                  var layer = this.text[classes];
                          // Create the text layer if it doesn't exist
  
                          if (layer == null) {
  
                  // Create the text layer container, if it doesn't exist
  
                  if (this.textContainer == null) {
                  this.textContainer = $("<div class='flot-text'></div>")
                          .css({
                          position: "absolute",
                                  top: 0,
                                  left: 0,
                                  bottom: 0,
                                  right: 0,
                                  'font-size': "smaller",
                                  color: "#545454"
                          })
                          .insertAfter(this.element);
                  }
  
                  layer = this.text[classes] = $("<div></div>")
                          .addClass(classes)
                          .css({
                          position: "absolute",
                                  top: 0,
                                  left: 0,
                                  bottom: 0,
                                  right: 0
                          })
                          .appendTo(this.textContainer);
                  }
  
                  return layer;
                  };
                  // Creates (if necessary) and returns a text info object.
                  //
                  // The object looks like this:
                  //
                  // {
                  //     width: Width of the text's wrapper div.
                  //     height: Height of the text's wrapper div.
                  //     element: The jQuery-wrapped HTML div containing the text.
                  //     positions: Array of positions at which this text is drawn.
                  // }
                  //
                  // The positions array contains objects that look like this:
                  //
                  // {
                  //     active: Flag indicating whether the text should be visible.
                  //     rendered: Flag indicating whether the text is currently visible.
                  //     element: The jQuery-wrapped HTML div containing the text.
                  //     x: X coordinate at which to draw the text.
                  //     y: Y coordinate at which to draw the text.
                  // }
                  //
                  // Each position after the first receives a clone of the original element.
                  //
                  // The idea is that that the width, height, and general 'identity' of the
                  // text is constant no matter where it is placed; the placements are a
                  // secondary property.
                  //
                  // Canvas maintains a cache of recently-used text info objects; getTextInfo
                  // either returns the cached element or creates a new entry.
                  //
                  // @param {string} layer A string of space-separated CSS classes uniquely
                  //     identifying the layer containing this text.
                  // @param {string} text Text string to retrieve info for.
                  // @param {(string|object)=} font Either a string of space-separated CSS
                  //     classes or a font-spec object, defining the text's font and style.
                  // @param {number=} angle Angle at which to rotate the text, in degrees.
                  //     Angle is currently unused, it will be implemented in the future.
                  // @param {number=} width Maximum width of the text before it wraps.
                  // @return {object} a text info object.
  
                  Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
  
                  var textStyle, layerCache, styleCache, info;
                          // Cast the value to a string, in case we were given a number or such
  
                          text = "" + text;
                          // If the font is a font-spec object, generate a CSS font definition
  
                          if (typeof font === "object") {
                  textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
                  } else {
                  textStyle = font;
                  }
  
                  // Retrieve (or create) the cache for the text's layer and styles
  
                  layerCache = this._textCache[layer];
                          if (layerCache == null) {
                  layerCache = this._textCache[layer] = {};
                  }
  
                  styleCache = layerCache[textStyle];
                          if (styleCache == null) {
                  styleCache = layerCache[textStyle] = {};
                  }
  
                  info = styleCache[text];
                          // If we can't find a matching element in our cache, create a new one
  
                          if (info == null) {
  
                  var element = $("<div></div>").html(text)
                          .css({
                          position: "absolute",
                                  'max-width': width,
                                  top: - 9999
                          })
                          .appendTo(this.getTextLayer(layer));
                          if (typeof font === "object") {
                  element.css({
                  font: textStyle,
                          color: font.color
                  });
                  } else if (typeof font === "string") {
                  element.addClass(font);
                  }
  
                  info = styleCache[text] = {
                  width: element.outerWidth(true),
                          height: element.outerHeight(true),
                          element: element,
                          positions: []
                  };
                          element.detach();
                  }
  
                  return info;
                  };
                  // Adds a text string to the canvas text overlay.
                  //
                  // The text isn't drawn immediately; it is marked as rendering, which will
                  // result in its addition to the canvas on the next render pass.
                  //
                  // @param {string} layer A string of space-separated CSS classes uniquely
                  //     identifying the layer containing this text.
                  // @param {number} x X coordinate at which to draw the text.
                  // @param {number} y Y coordinate at which to draw the text.
                  // @param {string} text Text string to draw.
                  // @param {(string|object)=} font Either a string of space-separated CSS
                  //     classes or a font-spec object, defining the text's font and style.
                  // @param {number=} angle Angle at which to rotate the text, in degrees.
                  //     Angle is currently unused, it will be implemented in the future.
                  // @param {number=} width Maximum width of the text before it wraps.
                  // @param {string=} halign Horizontal alignment of the text; either "left",
                  //     "center" or "right".
                  // @param {string=} valign Vertical alignment of the text; either "top",
                  //     "middle" or "bottom".
  
                  Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {
  
                  var info = this.getTextInfo(layer, text, font, angle, width),
                          positions = info.positions;
                          // Tweak the div's position to match the text's alignment
  
                          if (halign == "center") {
                  x -= info.width / 2;
                  } else if (halign == "right") {
                  x -= info.width;
                  }
  
                  if (valign == "middle") {
                  y -= info.height / 2;
                  } else if (valign == "bottom") {
                  y -= info.height;
                  }
  
                  // Determine whether this text already exists at this position.
                  // If so, mark it for inclusion in the next render pass.
  
                  for (var i = 0, position; position = positions[i]; i++) {
                  if (position.x == x && position.y == y) {
                  position.active = true;
                          return;
                  }
                  }
  
                  // If the text doesn't exist at this position, create a new entry
  
                  // For the very first position we'll re-use the original element,
                  // while for subsequent ones we'll clone it.
  
                  position = {
                  active: true,
                          rendered: false,
                          element: positions.length ? info.element.clone() : info.element,
                          x: x,
                          y: y
                  };
                          positions.push(position);
                          // Move the element to its final position within the container
  
                          position.element.css({
                          top: Math.round(y),
                                  left: Math.round(x),
                                  'text-align': halign	// In case the text wraps
                          });
                  };
                  // Removes one or more text strings from the canvas text overlay.
                  //
                  // If no parameters are given, all text within the layer is removed.
                  //
                  // Note that the text is not immediately removed; it is simply marked as
                  // inactive, which will result in its removal on the next render pass.
                  // This avoids the performance penalty for 'clear and redraw' behavior,
                  // where we potentially get rid of all text on a layer, but will likely
                  // add back most or all of it later, as when redrawing axes, for example.
                  //
                  // @param {string} layer A string of space-separated CSS classes uniquely
                  //     identifying the layer containing this text.
                  // @param {number=} x X coordinate of the text.
                  // @param {number=} y Y coordinate of the text.
                  // @param {string=} text Text string to remove.
                  // @param {(string|object)=} font Either a string of space-separated CSS
                  //     classes or a font-spec object, defining the text's font and style.
                  // @param {number=} angle Angle at which the text is rotated, in degrees.
                  //     Angle is currently unused, it will be implemented in the future.
  
                  Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
                  if (text == null) {
                  var layerCache = this._textCache[layer];
                          if (layerCache != null) {
                  for (var styleKey in layerCache) {
                  if (hasOwnProperty.call(layerCache, styleKey)) {
                  var styleCache = layerCache[styleKey];
                          for (var key in styleCache) {
                  if (hasOwnProperty.call(styleCache, key)) {
                  var positions = styleCache[key].positions;
                          for (var i = 0, position; position = positions[i]; i++) {
                  position.active = false;
                  }
                  }
                  }
                  }
                  }
                  }
                  } else {
                  var positions = this.getTextInfo(layer, text, font, angle).positions;
                          for (var i = 0, position; position = positions[i]; i++) {
                  if (position.x == x && position.y == y) {
                  position.active = false;
                  }
                  }
                  }
                  };
                  ///////////////////////////////////////////////////////////////////////////
                          // The top-level container for the entire plot.
  
                                  function Plot(placeholder, data_, options_, plugins) {
                                  // data is on the form:
                                  //   [ series1, series2 ... ]
                                  // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
                                  // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
  
                                  var series = [],
                                          options = {
                                          // the color theme used for graphs
                                          colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
                                                  legend: {
                                                  show: true,
                                                          noColumns: 1, // number of colums in legend table
                                                          labelFormatter: null, // fn: string -> string
                                                          labelBoxBorderColor: "#ccc", // border color for the little label boxes
                                                          container: null, // container (as jQuery object) to put legend in, null means default on top of graph
                                                          position: "ne", // position of default legend container within plot
                                                          margin: 5, // distance from grid edge to default legend container within plot
                                                          backgroundColor: null, // null means auto-detect
                                                          backgroundOpacity: 0.85, // set to 0 to avoid background
                                                          sorted: null    // default to no legend sorting
                                                  },
                                                  xaxis: {
                                                  show: null, // null = auto-detect, true = always, false = never
                                                          position: "bottom", // or "top"
                                                          mode: null, // null or "time"
                                                          font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
                                                          color: null, // base color, labels, ticks
                                                          tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
                                                          transform: null, // null or f: number -> number to transform axis
                                                          inverseTransform: null, // if transform is set, this should be the inverse function
                                                          min: null, // min. value to show, null means set automatically
                                                          max: null, // max. value to show, null means set automatically
                                                          autoscaleMargin: null, // margin in % to add if auto-setting min/max
                                                          ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
                                                          tickFormatter: null, // fn: number -> string
                                                          labelWidth: null, // size of tick labels in pixels
                                                          labelHeight: null,
                                                          reserveSpace: null, // whether to reserve space even if axis isn't shown
                                                          tickLength: null, // size in pixels of ticks, or "full" for whole line
                                                          alignTicksWithAxis: null, // axis number or null for no sync
                                                          tickDecimals: null, // no. of decimals, null means auto
                                                          tickSize: null, // number or [number, "unit"]
                                                          minTickSize: null // number or [number, "unit"]
                                                  },
                                                  yaxis: {
                                                  autoscaleMargin: 0.02,
                                                          position: "left" // or "right"
                                                  },
                                                  xaxes: [],
                                                  yaxes: [],
                                                  series: {
                                                  points: {
                                                  show: false,
                                                          radius: 3,
                                                          lineWidth: 2, // in pixels
                                                          fill: true,
                                                          fillColor: "#ffffff",
                                                          symbol: "circle" // or callback
                                                  },
                                                          lines: {
                                                          // we don't put in show: false so we can see
                                                          // whether lines were actively disabled
                                                          lineWidth: 2, // in pixels
                                                                  fill: false,
                                                                  fillColor: null,
                                                                  steps: false
                                                                  // Omit 'zero', so we can later default its value to
                                                                  // match that of the 'fill' option.
                                                          },
                                                          bars: {
                                                          show: false,
                                                                  lineWidth: 2, // in pixels
                                                                  barWidth: 1, // in units of the x axis
                                                                  fill: true,
                                                                  fillColor: null,
                                                                  align: "left", // "left", "right", or "center"
                                                                  horizontal: false,
                                                                  zero: true
                                                          },
                                                          shadowSize: 3,
                                                          highlightColor: null
                                                  },
                                                  grid: {
                                                  show: true,
                                                          aboveData: false,
                                                          color: "#545454", // primary color used for outline and labels
                                                          backgroundColor: null, // null for transparent, else color
                                                          borderColor: null, // set if different from the grid color
                                                          tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
                                                          margin: 0, // distance from the canvas edge to the grid
                                                          labelMargin: 5, // in pixels
                                                          axisMargin: 8, // in pixels
                                                          borderWidth: 2, // in pixels
                                                          minBorderMargin: null, // in pixels, null means taken from points radius
                                                          markings: null, // array of ranges or fn: axes -> array of ranges
                                                          markingsColor: "#f4f4f4",
                                                          markingsLineWidth: 2,
                                                          // interactive stuff
                                                          clickable: false,
                                                          hoverable: false,
                                                          autoHighlight: true, // highlight in case mouse is near
                                                          mouseActiveRadius: 10 // how far the mouse can be away to activate an item
                                                  },
                                                  interaction: {
                                                  redrawOverlayInterval: 1000 / 60 // time between updates, -1 means in same flow
                                                  },
                                                  hooks: {}
                                          },
                                          surface = null, // the canvas for the plot itself
                                          overlay = null, // canvas for interactive stuff on top of plot
                                          eventHolder = null, // jQuery object that events should be bound to
                                          ctx = null, octx = null,
                                          xaxes = [], yaxes = [],
                                          plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
                                          plotWidth = 0, plotHeight = 0,
                                          hooks = {
                                          processOptions: [],
                                                  processRawData: [],
                                                  processDatapoints: [],
                                                  processOffset: [],
                                                  drawBackground: [],
                                                  drawSeries: [],
                                                  draw: [],
                                                  bindEvents: [],
                                                  drawOverlay: [],
                                                  shutdown: []
                                          },
                                          plot = this;
                                          // public functions
                                          plot.setData = setData;
                                          plot.setupGrid = setupGrid;
                                          plot.draw = draw;
                                          plot.getPlaceholder = function() { return placeholder; };
                                          plot.getCanvas = function() { return surface.element; };
                                          plot.getPlotOffset = function() { return plotOffset; };
                                          plot.width = function () { return plotWidth; };
                                          plot.height = function () { return plotHeight; };
                                          plot.offset = function () {
                                          var o = eventHolder.offset();
                                                  o.left += plotOffset.left;
                                                  o.top += plotOffset.top;
                                                  return o;
                                          };
                                          plot.getData = function () { return series; };
                                          plot.getAxes = function () {
                                          var res = {}, i;
                                                  $.each(xaxes.concat(yaxes), function (_, axis) {
                                                  if (axis)
                                                          res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
                                                  });
                                                  return res;
                                          };
                                          plot.getXAxes = function () { return xaxes; };
                                          plot.getYAxes = function () { return yaxes; };
                                          plot.c2p = canvasToAxisCoords;
                                          plot.p2c = axisToCanvasCoords;
                                          plot.getOptions = function () { return options; };
                                          plot.highlight = highlight;
                                          plot.unhighlight = unhighlight;
                                          plot.triggerRedrawOverlay = triggerRedrawOverlay;
                                          plot.pointOffset = function(point) {
                                          return {
                                          left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c( + point.x) + plotOffset.left, 10),
                                                  top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c( + point.y) + plotOffset.top, 10)
                                          };
                                          };
                                          plot.shutdown = shutdown;
                                          plot.destroy = function () {
                                          shutdown();
                                                  placeholder.removeData("plot").empty();
                                                  series = [];
                                                  options = null;
                                                  surface = null;
                                                  overlay = null;
                                                  eventHolder = null;
                                                  ctx = null;
                                                  octx = null;
                                                  xaxes = [];
                                                  yaxes = [];
                                                  hooks = null;
                                                  highlights = [];
                                                  plot = null;
                                          };
                                          plot.resize = function () {
                                          var width = placeholder.width(),
                                                  height = placeholder.height();
                                                  surface.resize(width, height);
                                                  overlay.resize(width, height);
                                          };
                                          // public attributes
                                          plot.hooks = hooks;
                                          // initialize
                                          initPlugins(plot);
                                          parseOptions(options_);
                                          setupCanvases();
                                          setData(data_);
                                          setupGrid();
                                          draw();
                                          bindEvents();
                                          function executeHooks(hook, args) {
                                          args = [plot].concat(args);
                                                  for (var i = 0; i < hook.length; ++i)
                                                  hook[i].apply(this, args);
                                          }
  
                                  function initPlugins() {
  
                                  // References to key classes, allowing plugins to modify them
  
                                  var classes = {
                                  Canvas: Canvas
                                  };
                                          for (var i = 0; i < plugins.length; ++i) {
                                  var p = plugins[i];
                                          p.init(plot, classes);
                                          if (p.options)
                                          $.extend(true, options, p.options);
                                  }
                                  }
  
                                  function parseOptions(opts) {
  
                                  $.extend(true, options, opts);
                                          // $.extend merges arrays, rather than replacing them.  When less
                                          // colors are provided than the size of the default palette, we
                                          // end up with those colors plus the remaining defaults, which is
                                          // not expected behavior; avoid it by replacing them here.
  
                                          if (opts && opts.colors) {
                                  options.colors = opts.colors;
                                  }
  
                                  if (options.xaxis.color == null)
                                          options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
                                          if (options.yaxis.color == null)
                                          options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
                                          if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
                                          options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
                                          if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
                                          options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
                                          if (options.grid.borderColor == null)
                                          options.grid.borderColor = options.grid.color;
                                          if (options.grid.tickColor == null)
                                          options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
                                          // Fill in defaults for axis options, including any unspecified
                                          // font-spec fields, if a font-spec was provided.
  
                                          // If no x/y axis options were provided, create one of each anyway,
                                          // since the rest of the code assumes that they exist.
  
                                          var i, axisOptions, axisCount,
                                          fontSize = placeholder.css("font-size"),
                                          fontSizeDefault = fontSize ? + fontSize.replace("px", "") : 13,
                                          fontDefaults = {
                                          style: placeholder.css("font-style"),
                                                  size: Math.round(0.8 * fontSizeDefault),
                                                  variant: placeholder.css("font-variant"),
                                                  weight: placeholder.css("font-weight"),
                                                  family: placeholder.css("font-family")
                                          };
                                          axisCount = options.xaxes.length || 1;
                                          for (i = 0; i < axisCount; ++i) {
  
                                  axisOptions = options.xaxes[i];
                                          if (axisOptions && !axisOptions.tickColor) {
                                  axisOptions.tickColor = axisOptions.color;
                                  }
  
                                  axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
                                          options.xaxes[i] = axisOptions;
                                          if (axisOptions.font) {
                                  axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
                                          if (!axisOptions.font.color) {
                                  axisOptions.font.color = axisOptions.color;
                                  }
                                  if (!axisOptions.font.lineHeight) {
                                  axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
                                  }
                                  }
                                  }
  
                                  axisCount = options.yaxes.length || 1;
                                          for (i = 0; i < axisCount; ++i) {
  
                                  axisOptions = options.yaxes[i];
                                          if (axisOptions && !axisOptions.tickColor) {
                                  axisOptions.tickColor = axisOptions.color;
                                  }
  
                                  axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
                                          options.yaxes[i] = axisOptions;
                                          if (axisOptions.font) {
                                  axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
                                          if (!axisOptions.font.color) {
                                  axisOptions.font.color = axisOptions.color;
                                  }
                                  if (!axisOptions.font.lineHeight) {
                                  axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
                                  }
                                  }
                                  }
  
                                  // backwards compatibility, to be removed in future
                                  if (options.xaxis.noTicks && options.xaxis.ticks == null)
                                          options.xaxis.ticks = options.xaxis.noTicks;
                                          if (options.yaxis.noTicks && options.yaxis.ticks == null)
                                          options.yaxis.ticks = options.yaxis.noTicks;
                                          if (options.x2axis) {
                                  options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
                                          options.xaxes[1].position = "top";
                                          // Override the inherit to allow the axis to auto-scale
                                          if (options.x2axis.min == null) {
                                  options.xaxes[1].min = null;
                                  }
                                  if (options.x2axis.max == null) {
                                  options.xaxes[1].max = null;
                                  }
                                  }
                                  if (options.y2axis) {
                                  options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
                                          options.yaxes[1].position = "right";
                                          // Override the inherit to allow the axis to auto-scale
                                          if (options.y2axis.min == null) {
                                  options.yaxes[1].min = null;
                                  }
                                  if (options.y2axis.max == null) {
                                  options.yaxes[1].max = null;
                                  }
                                  }
                                  if (options.grid.coloredAreas)
                                          options.grid.markings = options.grid.coloredAreas;
                                          if (options.grid.coloredAreasColor)
                                          options.grid.markingsColor = options.grid.coloredAreasColor;
                                          if (options.lines)
                                          $.extend(true, options.series.lines, options.lines);
                                          if (options.points)
                                          $.extend(true, options.series.points, options.points);
                                          if (options.bars)
                                          $.extend(true, options.series.bars, options.bars);
                                          if (options.shadowSize != null)
                                          options.series.shadowSize = options.shadowSize;
                                          if (options.highlightColor != null)
                                          options.series.highlightColor = options.highlightColor;
                                          // save options on axes for future reference
                                          for (i = 0; i < options.xaxes.length; ++i)
                                          getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
                                          for (i = 0; i < options.yaxes.length; ++i)
                                          getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
                                          // add hooks from options
                                          for (var n in hooks)
                                          if (options.hooks[n] && options.hooks[n].length)
                                          hooks[n] = hooks[n].concat(options.hooks[n]);
                                          executeHooks(hooks.processOptions, [options]);
                                  }
  
                                  function setData(d) {
                                  series = parseData(d);
                                          fillInSeriesOptions();
                                          processData();
                                  }
  
                                  function parseData(d) {
                                  var res = [];
                                          for (var i = 0; i < d.length; ++i) {
                                  var s = $.extend(true, {}, options.series);
                                          if (d[i].data != null) {
                                  s.data = d[i].data; // move the data instead of deep-copy
                                          delete d[i].data;
                                          $.extend(true, s, d[i]);
                                          d[i].data = s.data;
                                  }
                                  else
                                          s.data = d[i];
                                          res.push(s);
                                  }
  
                                  return res;
                                  }
  
                                  function axisNumber(obj, coord) {
                                  var a = obj[coord + "axis"];
                                          if (typeof a == "object") // if we got a real axis, extract number
                                          a = a.n;
                                          if (typeof a != "number")
                                          a = 1; // default to first axis
                                          return a;
                                  }
  
                                  function allAxes() {
                                  // return flat array without annoying null entries
                                  return $.grep(xaxes.concat(yaxes), function (a) { return a; });
                                  }
  
                                  function canvasToAxisCoords(pos) {
                                  // return an object with x/y corresponding to all used axes
                                  var res = {}, i, axis;
                                          for (i = 0; i < xaxes.length; ++i) {
                                  axis = xaxes[i];
                                          if (axis && axis.used)
                                          res["x" + axis.n] = axis.c2p(pos.left);
                                  }
  
                                  for (i = 0; i < yaxes.length; ++i) {
                                  axis = yaxes[i];
                                          if (axis && axis.used)
                                          res["y" + axis.n] = axis.c2p(pos.top);
                                  }
  
                                  if (res.x1 !== undefined)
                                          res.x = res.x1;
                                          if (res.y1 !== undefined)
                                          res.y = res.y1;
                                          return res;
                                  }
  
                                  function axisToCanvasCoords(pos) {
                                  // get canvas coords from the first pair of x/y found in pos
                                  var res = {}, i, axis, key;
                                          for (i = 0; i < xaxes.length; ++i) {
                                  axis = xaxes[i];
                                          if (axis && axis.used) {
                                  key = "x" + axis.n;
                                          if (pos[key] == null && axis.n == 1)
                                          key = "x";
                                          if (pos[key] != null) {
                                  res.left = axis.p2c(pos[key]);
                                          break;
                                  }
                                  }
                                  }
  
                                  for (i = 0; i < yaxes.length; ++i) {
                                  axis = yaxes[i];
                                          if (axis && axis.used) {
                                  key = "y" + axis.n;
                                          if (pos[key] == null && axis.n == 1)
                                          key = "y";
                                          if (pos[key] != null) {
                                  res.top = axis.p2c(pos[key]);
                                          break;
                                  }
                                  }
                                  }
  
                                  return res;
                                  }
  
                                  function getOrCreateAxis(axes, number) {
                                  if (!axes[number - 1])
                                          axes[number - 1] = {
                                  n: number, // save the number for future reference
                                          direction: axes == xaxes ? "x" : "y",
                                          options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
                                  };
                                          return axes[number - 1];
                                  }
  
                                  function fillInSeriesOptions() {
  
                                  var neededColors = series.length, maxIndex = - 1, i;
                                          // Subtract the number of series that already have fixed colors or
                                          // color indexes from the number that we still need to generate.
  
                                          for (i = 0; i < series.length; ++i) {
                                  var sc = series[i].color;
                                          if (sc != null) {
                                  neededColors--;
                                          if (typeof sc == "number" && sc > maxIndex) {
                                  maxIndex = sc;
                                  }
                                  }
                                  }
  
                                  // If any of the series have fixed color indexes, then we need to
                                  // generate at least as many colors as the highest index.
  
                                  if (neededColors <= maxIndex) {
                                  neededColors = maxIndex + 1;
                                  }
  
                                  // Generate all the colors, using first the option colors and then
                                  // variations on those colors once they're exhausted.
  
                                  var c, colors = [], colorPool = options.colors,
                                          colorPoolSize = colorPool.length, variation = 0;
                                          for (i = 0; i < neededColors; i++) {
  
                                  c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
                                          // Each time we exhaust the colors in the pool we adjust
                                          // a scaling factor used to produce more variations on
                                          // those colors. The factor alternates negative/positive
                                          // to produce lighter/darker colors.
  
                                          // Reset the variation after every few cycles, or else
                                          // it will end up producing only white or black colors.
  
                                          if (i % colorPoolSize == 0 && i) {
                                  if (variation >= 0) {
                                  if (variation < 0.5) {
                                  variation = - variation - 0.2;
                                  } else variation = 0;
                                  } else variation = - variation;
                                  }
  
                                  colors[i] = c.scale('rgb', 1 + variation);
                                  }
  
                                  // Finalize the series options, filling in their colors
  
                                  var colori = 0, s;
                                          for (i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          // assign colors
                                          if (s.color == null) {
                                  s.color = colors[colori].toString();
                                          ++colori;
                                  }
                                  else if (typeof s.color == "number")
                                          s.color = colors[s.color].toString();
                                          // turn on lines automatically in case nothing is set
                                          if (s.lines.show == null) {
                                  var v, show = true;
                                          for (v in s)
                                          if (s[v] && s[v].show) {
                                  show = false;
                                          break;
                                  }
                                  if (show)
                                          s.lines.show = true;
                                  }
  
                                  // If nothing was provided for lines.zero, default it to match
                                  // lines.fill, since areas by default should extend to zero.
  
                                  if (s.lines.zero == null) {
                                  s.lines.zero = !!s.lines.fill;
                                  }
  
                                  // setup axes
                                  s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
                                          s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
                                  }
                                  }
  
                                  function processData() {
                                  var topSentry = Number.POSITIVE_INFINITY,
                                          bottomSentry = Number.NEGATIVE_INFINITY,
                                          fakeInfinity = Number.MAX_VALUE,
                                          i, j, k, m, length,
                                          s, points, ps, x, y, axis, val, f, p,
                                          data, format;
                                          function updateAxis(axis, min, max) {
                                          if (min < axis.datamin && min != - fakeInfinity)
                                                  axis.datamin = min;
                                                  if (max > axis.datamax && max != fakeInfinity)
                                                  axis.datamax = max;
                                          }
  
                                  $.each(allAxes(), function (_, axis) {
                                  // init axis
                                  axis.datamin = topSentry;
                                          axis.datamax = bottomSentry;
                                          axis.used = false;
                                  });
                                          for (i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          s.datapoints = { points: [] };
                                          executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
                                  }
  
                                  // first pass: clean and copy data
                                  for (i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          data = s.data;
                                          format = s.datapoints.format;
                                          if (!format) {
                                  format = [];
                                          // find out how to copy
                                          format.push({ x: true, number: true, required: true });
                                          format.push({ y: true, number: true, required: true });
                                          if (s.bars.show || (s.lines.show && s.lines.fill)) {
                                  var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
                                          format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
                                          if (s.bars.horizontal) {
                                  delete format[format.length - 1].y;
                                          format[format.length - 1].x = true;
                                  }
                                  }
  
                                  s.datapoints.format = format;
                                  }
  
                                  if (s.datapoints.pointsize != null)
                                          continue; // already filled in
  
                                          s.datapoints.pointsize = format.length;
                                          ps = s.datapoints.pointsize;
                                          points = s.datapoints.points;
                                          var insertSteps = s.lines.show && s.lines.steps;
                                          s.xaxis.used = s.yaxis.used = true;
                                          for (j = k = 0; j < data.length; ++j, k += ps) {
                                  p = data[j];
                                          var nullify = p == null;
                                          if (!nullify) {
                                  for (m = 0; m < ps; ++m) {
                                  val = p[m];
                                          f = format[m];
                                          if (f) {
                                  if (f.number && val != null) {
                                  val = + val; // convert to number
                                          if (isNaN(val))
                                          val = null;
                                          else if (val == Infinity)
                                          val = fakeInfinity;
                                          else if (val == - Infinity)
                                          val = - fakeInfinity;
                                  }
  
                                  if (val == null) {
                                  if (f.required)
                                          nullify = true;
                                          if (f.defaultValue != null)
                                          val = f.defaultValue;
                                  }
                                  }
  
                                  points[k + m] = val;
                                  }
                                  }
  
                                  if (nullify) {
                                  for (m = 0; m < ps; ++m) {
                                  val = points[k + m];
                                          if (val != null) {
                                  f = format[m];
                                          // extract min/max info
                                          if (f.autoscale !== false) {
                                  if (f.x) {
                                  updateAxis(s.xaxis, val, val);
                                  }
                                  if (f.y) {
                                  updateAxis(s.yaxis, val, val);
                                  }
                                  }
                                  }
                                  points[k + m] = null;
                                  }
                                  }
                                  else {
                                  // a little bit of line specific stuff that
                                  // perhaps shouldn't be here, but lacking
                                  // better means...
                                  if (insertSteps && k > 0
                                          && points[k - ps] != null
                                          && points[k - ps] != points[k]
                                          && points[k - ps + 1] != points[k + 1]) {
                                  // copy the point to make room for a middle point
                                  for (m = 0; m < ps; ++m)
                                          points[k + ps + m] = points[k + m];
                                          // middle point has same y
                                          points[k + 1] = points[k - ps + 1];
                                          // we've added a point, better reflect that
                                          k += ps;
                                  }
                                  }
                                  }
                                  }
  
                                  // give the hooks a chance to run
                                  for (i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
                                  }
  
                                  // second pass: find datamax/datamin for auto-scaling
                                  for (i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          points = s.datapoints.points;
                                          ps = s.datapoints.pointsize;
                                          format = s.datapoints.format;
                                          var xmin = topSentry, ymin = topSentry,
                                          xmax = bottomSentry, ymax = bottomSentry;
                                          for (j = 0; j < points.length; j += ps) {
                                  if (points[j] == null)
                                          continue;
                                          for (m = 0; m < ps; ++m) {
                                  val = points[j + m];
                                          f = format[m];
                                          if (!f || f.autoscale === false || val == fakeInfinity || val == - fakeInfinity)
                                          continue;
                                          if (f.x) {
                                  if (val < xmin)
                                          xmin = val;
                                          if (val > xmax)
                                          xmax = val;
                                  }
                                  if (f.y) {
                                  if (val < ymin)
                                          ymin = val;
                                          if (val > ymax)
                                          ymax = val;
                                  }
                                  }
                                  }
  
                                  if (s.bars.show) {
                                  // make sure we got room for the bar on the dancing floor
                                  var delta;
                                          switch (s.bars.align) {
                                  case "left":
                                          delta = 0;
                                          break;
                                          case "right":
                                          delta = - s.bars.barWidth;
                                          break;
                                          default:
                                          delta = - s.bars.barWidth / 2;
                                  }
  
                                  if (s.bars.horizontal) {
                                  ymin += delta;
                                          ymax += delta + s.bars.barWidth;
                                  }
                                  else {
                                  xmin += delta;
                                          xmax += delta + s.bars.barWidth;
                                  }
                                  }
  
                                  updateAxis(s.xaxis, xmin, xmax);
                                          updateAxis(s.yaxis, ymin, ymax);
                                  }
  
                                  $.each(allAxes(), function (_, axis) {
                                  if (axis.datamin == topSentry)
                                          axis.datamin = null;
                                          if (axis.datamax == bottomSentry)
                                          axis.datamax = null;
                                  });
                                  }
  
                                  function setupCanvases() {
  
                                  // Make sure the placeholder is clear of everything except canvases
                                  // from a previous plot in this container that we'll try to re-use.
  
                                  placeholder.css("padding", 0) // padding messes up the positioning
                                          .children().filter(function(){
                                  return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
                                  }).remove();
                                          if (placeholder.css("position") == 'static')
                                          placeholder.css("position", "relative"); // for positioning labels and overlay
  
                                          surface = new Canvas("flot-base", placeholder);
                                          overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
  
                                          ctx = surface.context;
                                          octx = overlay.context;
                                          // define which element we're listening for events on
                                          eventHolder = $(overlay.element).unbind();
                                          // If we're re-using a plot object, shut down the old one
  
                                          var existing = placeholder.data("plot");
                                          if (existing) {
                                  existing.shutdown();
                                          overlay.clear();
                                  }
  
                                  // save in case we get replotted
                                  placeholder.data("plot", plot);
                                  }
  
                                  function bindEvents() {
                                  // bind events
                                  if (options.grid.hoverable) {
                                  eventHolder.mousemove(onMouseMove);
                                          // Use bind, rather than .mouseleave, because we officially
                                          // still support jQuery 1.2.6, which doesn't define a shortcut
                                          // for mouseenter or mouseleave.  This was a bug/oversight that
                                          // was fixed somewhere around 1.3.x.  We can return to using
                                          // .mouseleave when we drop support for 1.2.6.
  
                                          eventHolder.bind("mouseleave", onMouseLeave);
                                  }
  
                                  if (options.grid.clickable)
                                          eventHolder.click(onClick);
                                          executeHooks(hooks.bindEvents, [eventHolder]);
                                  }
  
                                  function shutdown() {
                                  if (redrawTimeout)
                                          clearTimeout(redrawTimeout);
                                          eventHolder.unbind("mousemove", onMouseMove);
                                          eventHolder.unbind("mouseleave", onMouseLeave);
                                          eventHolder.unbind("click", onClick);
                                          executeHooks(hooks.shutdown, [eventHolder]);
                                  }
  
                                  function setTransformationHelpers(axis) {
                                  // set helper functions on the axis, assumes plot area
                                  // has been computed already
  
                                  function identity(x) { return x; }
  
                                  var s, m, t = axis.options.transform || identity,
                                          it = axis.options.inverseTransform;
                                          // precompute how much the axis is scaling a point
                                          // in canvas space
                                          if (axis.direction == "x") {
                                  s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
                                          m = Math.min(t(axis.max), t(axis.min));
                                  }
                                  else {
                                  s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
                                          s = - s;
                                          m = Math.max(t(axis.max), t(axis.min));
                                  }
  
                                  // data point to canvas coordinate
                                  if (t == identity) // slight optimization
                                          axis.p2c = function (p) { return (p - m) * s; };
                                          else
                                          axis.p2c = function (p) { return (t(p) - m) * s; };
                                          // canvas coordinate to data point
                                          if (!it)
                                          axis.c2p = function (c) { return m + c / s; };
                                          else
                                          axis.c2p = function (c) { return it(m + c / s); };
                                  }
  
                                  function measureTickLabels(axis) {
  
                                  var opts = axis.options,
                                          ticks = axis.ticks || [],
                                          labelWidth = opts.labelWidth || 0,
                                          labelHeight = opts.labelHeight || 0,
                                          maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
                                          legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
                                          layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
                                          font = opts.font || "flot-tick-label tickLabel";
                                          for (var i = 0; i < ticks.length; ++i) {
  
                                  var t = ticks[i];
                                          if (!t.label)
                                          continue;
                                          var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
                                          labelWidth = Math.max(labelWidth, info.width);
                                          labelHeight = Math.max(labelHeight, info.height);
                                  }
  
                                  axis.labelWidth = opts.labelWidth || labelWidth;
                                          axis.labelHeight = opts.labelHeight || labelHeight;
                                  }
  
                                  function allocateAxisBoxFirstPhase(axis) {
                                  // find the bounding box of the axis by looking at label
                                  // widths/heights and ticks, make room by diminishing the
                                  // plotOffset; this first phase only looks at one
                                  // dimension per axis, the other dimension depends on the
                                  // other axes so will have to wait
  
                                  var lw = axis.labelWidth,
                                          lh = axis.labelHeight,
                                          pos = axis.options.position,
                                          isXAxis = axis.direction === "x",
                                          tickLength = axis.options.tickLength,
                                          axisMargin = options.grid.axisMargin,
                                          padding = options.grid.labelMargin,
                                          innermost = true,
                                          outermost = true,
                                          first = true,
                                          found = false;
                                          // Determine the axis's position in its direction and on its side
  
                                          $.each(isXAxis ? xaxes : yaxes, function(i, a) {
                                          if (a && (a.show || a.reserveSpace)) {
                                          if (a === axis) {
                                          found = true;
                                          } else if (a.options.position === pos) {
                                          if (found) {
                                          outermost = false;
                                          } else {
                                          innermost = false;
                                          }
                                          }
                                          if (!found) {
                                          first = false;
                                          }
                                          }
                                          });
                                          // The outermost axis on each side has no margin
  
                                          if (outermost) {
                                  axisMargin = 0;
                                  }
  
                                  // The ticks for the first axis in each direction stretch across
  
                                  if (tickLength == null) {
                                  tickLength = first ? "full" : 5;
                                  }
  
                                  if (!isNaN( + tickLength))
                                          padding += + tickLength;
                                          if (isXAxis) {
                                  lh += padding;
                                          if (pos == "bottom") {
                                  plotOffset.bottom += lh + axisMargin;
                                          axis.box = { top: surface.height - plotOffset.bottom, height: lh };
                                  }
                                  else {
                                  axis.box = { top: plotOffset.top + axisMargin, height: lh };
                                          plotOffset.top += lh + axisMargin;
                                  }
                                  }
                                  else {
                                  lw += padding;
                                          if (pos == "left") {
                                  axis.box = { left: plotOffset.left + axisMargin, width: lw };
                                          plotOffset.left += lw + axisMargin;
                                  }
                                  else {
                                  plotOffset.right += lw + axisMargin;
                                          axis.box = { left: surface.width - plotOffset.right, width: lw };
                                  }
                                  }
  
                                  // save for future reference
                                  axis.position = pos;
                                          axis.tickLength = tickLength;
                                          axis.box.padding = padding;
                                          axis.innermost = innermost;
                                  }
  
                                  function allocateAxisBoxSecondPhase(axis) {
                                  // now that all axis boxes have been placed in one
                                  // dimension, we can set the remaining dimension coordinates
                                  if (axis.direction == "x") {
                                  axis.box.left = plotOffset.left - axis.labelWidth / 2;
                                          axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
                                  }
                                  else {
                                  axis.box.top = plotOffset.top - axis.labelHeight / 2;
                                          axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
                                  }
                                  }
  
                                  function adjustLayoutForThingsStickingOut() {
                                  // possibly adjust plot offset to ensure everything stays
                                  // inside the canvas and isn't clipped off
  
                                  var minMargin = options.grid.minBorderMargin,
                                          axis, i;
                                          // check stuff from the plot (FIXME: this should just read
                                          // a value from the series, otherwise it's impossible to
                                          // customize)
                                          if (minMargin == null) {
                                  minMargin = 0;
                                          for (i = 0; i < series.length; ++i)
                                          minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth / 2));
                                  }
  
                                  var margins = {
                                  left: minMargin,
                                          right: minMargin,
                                          top: minMargin,
                                          bottom: minMargin
                                  };
                                          // check axis labels, note we don't check the actual
                                          // labels but instead use the overall width/height to not
                                          // jump as much around with replots
                                          $.each(allAxes(), function (_, axis) {
                                          if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
                                          if (axis.direction === "x") {
                                          margins.left = Math.max(margins.left, axis.labelWidth / 2);
                                                  margins.right = Math.max(margins.right, axis.labelWidth / 2);
                                          } else {
                                          margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
                                                  margins.top = Math.max(margins.top, axis.labelHeight / 2);
                                          }
                                          }
                                          });
                                          plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
                                          plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
                                          plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
                                          plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
                                  }
  
                                  function setupGrid() {
                                  var i, axes = allAxes(), showGrid = options.grid.show;
                                          // Initialize the plot's offset from the edge of the canvas
  
                                          for (var a in plotOffset) {
                                  var margin = options.grid.margin || 0;
                                          plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
                                  }
  
                                  executeHooks(hooks.processOffset, [plotOffset]);
                                          // If the grid is visible, add its border width to the offset
  
                                          for (var a in plotOffset) {
                                  if (typeof (options.grid.borderWidth) == "object") {
                                  plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
                                  }
                                  else {
                                  plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
                                  }
                                  }
  
                                  $.each(axes, function (_, axis) {
                                  var axisOpts = axis.options;
                                          axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
                                          axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
                                          setRange(axis);
                                  });
                                          if (showGrid) {
  
                                  var allocatedAxes = $.grep(axes, function (axis) {
                                  return axis.show || axis.reserveSpace;
                                  });
                                          $.each(allocatedAxes, function (_, axis) {
                                          // make the ticks
                                          setupTickGeneration(axis);
                                                  setTicks(axis);
                                                  snapRangeToTicks(axis, axis.ticks);
                                                  // find labelWidth/Height for axis
                                                  measureTickLabels(axis);
                                          });
                                          // with all dimensions calculated, we can compute the
                                          // axis bounding boxes, start from the outside
                                          // (reverse order)
                                          for (i = allocatedAxes.length - 1; i >= 0; --i)
                                          allocateAxisBoxFirstPhase(allocatedAxes[i]);
                                          // make sure we've got enough space for things that
                                          // might stick out
                                          adjustLayoutForThingsStickingOut();
                                          $.each(allocatedAxes, function (_, axis) {
                                          allocateAxisBoxSecondPhase(axis);
                                          });
                                  }
  
                                  plotWidth = surface.width - plotOffset.left - plotOffset.right;
                                          plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
                                          // now we got the proper plot dimensions, we can compute the scaling
                                          $.each(axes, function (_, axis) {
                                          setTransformationHelpers(axis);
                                          });
                                          if (showGrid) {
                                  drawAxisLabels();
                                  }
  
                                  insertLegend();
                                  }
  
                                  function setRange(axis) {
                                  var opts = axis.options,
                                          min = + (opts.min != null ? opts.min : axis.datamin),
                                          max = + (opts.max != null ? opts.max : axis.datamax),
                                          delta = max - min;
                                          if (delta == 0.0) {
                                  // degenerate case
                                  var widen = max == 0 ? 1 : 0.01;
                                          if (opts.min == null)
                                          min -= widen;
                                          // always widen max if we couldn't widen min to ensure we
                                          // don't fall into min == max which doesn't work
                                          if (opts.max == null || opts.min != null)
                                          max += widen;
                                  }
                                  else {
                                  // consider autoscaling
                                  var margin = opts.autoscaleMargin;
                                          if (margin != null) {
                                  if (opts.min == null) {
                                  min -= delta * margin;
                                          // make sure we don't go below zero if all values
                                          // are positive
                                          if (min < 0 && axis.datamin != null && axis.datamin >= 0)
                                          min = 0;
                                  }
                                  if (opts.max == null) {
                                  max += delta * margin;
                                          if (max > 0 && axis.datamax != null && axis.datamax <= 0)
                                          max = 0;
                                  }
                                  }
                                  }
                                  axis.min = min;
                                          axis.max = max;
                                  }
  
                                  function setupTickGeneration(axis) {
                                  var opts = axis.options;
                                          // estimate number of ticks
                                          var noTicks;
                                          if (typeof opts.ticks == "number" && opts.ticks > 0)
                                          noTicks = opts.ticks;
                                          else
                                          // heuristic based on the model a*sqrt(x) fitted to
                                          // some data points that seemed reasonable
                                          noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
                                          var delta = (axis.max - axis.min) / noTicks,
                                          dec = - Math.floor(Math.log(delta) / Math.LN10),
                                          maxDec = opts.tickDecimals;
                                          if (maxDec != null && dec > maxDec) {
                                  dec = maxDec;
                                  }
  
                                  var magn = Math.pow(10, - dec),
                                          norm = delta / magn, // norm is between 1.0 and 10.0
                                          size;
                                          if (norm < 1.5) {
                                  size = 1;
                                  } else if (norm < 3) {
                                  size = 2;
                                          // special case for 2.5, requires an extra decimal
                                          if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
                                  size = 2.5;
                                          ++dec;
                                  }
                                  } else if (norm < 7.5) {
                                  size = 5;
                                  } else {
                                  size = 10;
                                  }
  
                                  size *= magn;
                                          if (opts.minTickSize != null && size < opts.minTickSize) {
                                  size = opts.minTickSize;
                                  }
  
                                  axis.delta = delta;
                                          axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
                                          axis.tickSize = opts.tickSize || size;
                                          // Time mode was moved to a plug-in in 0.8, and since so many people use it
                                          // we'll add an especially friendly reminder to make sure they included it.
  
                                          if (opts.mode == "time" && !axis.tickGenerator) {
                                  throw new Error("Time mode requires the flot.time plugin.");
                                  }
  
                                  // Flot supports base-10 axes; any other mode else is handled by a plug-in,
                                  // like flot.time.js.
  
                                  if (!axis.tickGenerator) {
  
                                  axis.tickGenerator = function (axis) {
  
                                  var ticks = [],
                                          start = floorInBase(axis.min, axis.tickSize),
                                          i = 0,
                                          v = Number.NaN,
                                          prev;
                                          do {
                                          prev = v;
                                                  v = start + i * axis.tickSize;
                                                  ticks.push(v);
                                                  ++i;
                                          } while (v < axis.max && v != prev);
                                          return ticks;
                                  };
                                          axis.tickFormatter = function (value, axis) {
  
                                          var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
                                                  var formatted = "" + Math.round(value * factor) / factor;
                                                  // If tickDecimals was specified, ensure that we have exactly that
                                                  // much precision; otherwise default to the value's own precision.
  
                                                  if (axis.tickDecimals != null) {
                                          var decimal = formatted.indexOf(".");
                                                  var precision = decimal == - 1 ? 0 : formatted.length - decimal - 1;
                                                  if (precision < axis.tickDecimals) {
                                          return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
                                          }
                                          }
  
                                          return formatted;
                                          };
                                  }
  
                                  if ($.isFunction(opts.tickFormatter))
                                          axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
                                          if (opts.alignTicksWithAxis != null) {
                                  var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
                                          if (otherAxis && otherAxis.used && otherAxis != axis) {
                                  // consider snapping min/max to outermost nice ticks
                                  var niceTicks = axis.tickGenerator(axis);
                                          if (niceTicks.length > 0) {
                                  if (opts.min == null)
                                          axis.min = Math.min(axis.min, niceTicks[0]);
                                          if (opts.max == null && niceTicks.length > 1)
                                          axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
                                  }
  
                                  axis.tickGenerator = function (axis) {
                                  // copy ticks, scaled to this axis
                                  var ticks = [], v, i;
                                          for (i = 0; i < otherAxis.ticks.length; ++i) {
                                  v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
                                          v = axis.min + v * (axis.max - axis.min);
                                          ticks.push(v);
                                  }
                                  return ticks;
                                  };
                                          // we might need an extra decimal since forced
                                          // ticks don't necessarily fit naturally
                                          if (!axis.mode && opts.tickDecimals == null) {
                                  var extraDec = Math.max(0, - Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
                                          ts = axis.tickGenerator(axis);
                                          // only proceed if the tick interval rounded
                                          // with an extra decimal doesn't give us a
                                          // zero at end
                                          if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
                                          axis.tickDecimals = extraDec;
                                  }
                                  }
                                  }
                                  }
  
                                  function setTicks(axis) {
                                  var oticks = axis.options.ticks, ticks = [];
                                          if (oticks == null || (typeof oticks == "number" && oticks > 0))
                                          ticks = axis.tickGenerator(axis);
                                          else if (oticks) {
                                  if ($.isFunction(oticks))
                                          // generate the ticks
                                          ticks = oticks(axis);
                                          else
                                          ticks = oticks;
                                  }
  
                                  // clean up/labelify the supplied ticks, copy them over
                                  var i, v;
                                          axis.ticks = [];
                                          for (i = 0; i < ticks.length; ++i) {
                                  var label = null;
                                          var t = ticks[i];
                                          if (typeof t == "object") {
                                  v = + t[0];
                                          if (t.length > 1)
                                          label = t[1];
                                  }
                                  else
                                          v = + t;
                                          if (label == null)
                                          label = axis.tickFormatter(v, axis);
                                          if (!isNaN(v))
                                          axis.ticks.push({ v: v, label: label });
                                  }
                                  }
  
                                  function snapRangeToTicks(axis, ticks) {
                                  if (axis.options.autoscaleMargin && ticks.length > 0) {
                                  // snap to ticks
                                  if (axis.options.min == null)
                                          axis.min = Math.min(axis.min, ticks[0].v);
                                          if (axis.options.max == null && ticks.length > 1)
                                          axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
                                  }
                                  }
  
                                  function draw() {
  
                                  surface.clear();
                                          executeHooks(hooks.drawBackground, [ctx]);
                                          var grid = options.grid;
                                          // draw background, if any
                                          if (grid.show && grid.backgroundColor)
                                          drawBackground();
                                          if (grid.show && !grid.aboveData) {
                                  drawGrid();
                                  }
  
                                  for (var i = 0; i < series.length; ++i) {
                                  executeHooks(hooks.drawSeries, [ctx, series[i]]);
                                          drawSeries(series[i]);
                                  }
  
                                  executeHooks(hooks.draw, [ctx]);
                                          if (grid.show && grid.aboveData) {
                                  drawGrid();
                                  }
  
                                  surface.render();
                                          // A draw implies that either the axes or data have changed, so we
                                          // should probably update the overlay highlights as well.
  
                                          triggerRedrawOverlay();
                                  }
  
                                  function extractRange(ranges, coord) {
                                  var axis, from, to, key, axes = allAxes();
                                          for (var i = 0; i < axes.length; ++i) {
                                  axis = axes[i];
                                          if (axis.direction == coord) {
                                  key = coord + axis.n + "axis";
                                          if (!ranges[key] && axis.n == 1)
                                          key = coord + "axis"; // support x1axis as xaxis
                                          if (ranges[key]) {
                                  from = ranges[key].from;
                                          to = ranges[key].to;
                                          break;
                                  }
                                  }
                                  }
  
                                  // backwards-compat stuff - to be removed in future
                                  if (!ranges[key]) {
                                  axis = coord == "x" ? xaxes[0] : yaxes[0];
                                          from = ranges[coord + "1"];
                                          to = ranges[coord + "2"];
                                  }
  
                                  // auto-reverse as an added bonus
                                  if (from != null && to != null && from > to) {
                                  var tmp = from;
                                          from = to;
                                          to = tmp;
                                  }
  
                                  return { from: from, to: to, axis: axis };
                                  }
  
                                  function drawBackground() {
                                  ctx.save();
                                          ctx.translate(plotOffset.left, plotOffset.top);
                                          ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
                                          ctx.fillRect(0, 0, plotWidth, plotHeight);
                                          ctx.restore();
                                  }
  
                                  function drawGrid() {
                                  var i, axes, bw, bc;
                                          ctx.save();
                                          ctx.translate(plotOffset.left, plotOffset.top);
                                          // draw markings
                                          var markings = options.grid.markings;
                                          if (markings) {
                                  if ($.isFunction(markings)) {
                                  axes = plot.getAxes();
                                          // xmin etc. is backwards compatibility, to be
                                          // removed in the future
                                          axes.xmin = axes.xaxis.min;
                                          axes.xmax = axes.xaxis.max;
                                          axes.ymin = axes.yaxis.min;
                                          axes.ymax = axes.yaxis.max;
                                          markings = markings(axes);
                                  }
  
                                  for (i = 0; i < markings.length; ++i) {
                                  var m = markings[i],
                                          xrange = extractRange(m, "x"),
                                          yrange = extractRange(m, "y");
                                          // fill in missing
                                          if (xrange.from == null)
                                          xrange.from = xrange.axis.min;
                                          if (xrange.to == null)
                                          xrange.to = xrange.axis.max;
                                          if (yrange.from == null)
                                          yrange.from = yrange.axis.min;
                                          if (yrange.to == null)
                                          yrange.to = yrange.axis.max;
                                          // clip
                                          if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
                                                  yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
                                          continue;
                                          xrange.from = Math.max(xrange.from, xrange.axis.min);
                                          xrange.to = Math.min(xrange.to, xrange.axis.max);
                                          yrange.from = Math.max(yrange.from, yrange.axis.min);
                                          yrange.to = Math.min(yrange.to, yrange.axis.max);
                                          var xequal = xrange.from === xrange.to,
                                          yequal = yrange.from === yrange.to;
                                          if (xequal && yequal) {
                                  continue;
                                  }
  
                                  // then draw
                                  xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
                                          xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
                                          yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
                                          yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
                                          if (xequal || yequal) {
                                  var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
                                          subPixel = lineWidth % 2 ? 0.5 : 0;
                                          ctx.beginPath();
                                          ctx.strokeStyle = m.color || options.grid.markingsColor;
                                          ctx.lineWidth = lineWidth;
                                          if (xequal) {
                                  ctx.moveTo(xrange.to + subPixel, yrange.from);
                                          ctx.lineTo(xrange.to + subPixel, yrange.to);
                                  } else {
                                  ctx.moveTo(xrange.from, yrange.to + subPixel);
                                          ctx.lineTo(xrange.to, yrange.to + subPixel);
                                  }
                                  ctx.stroke();
                                  } else {
                                  ctx.fillStyle = m.color || options.grid.markingsColor;
                                          ctx.fillRect(xrange.from, yrange.to,
                                                  xrange.to - xrange.from,
                                                  yrange.from - yrange.to);
                                  }
                                  }
                                  }
  
                                  // draw the ticks
                                  axes = allAxes();
                                          bw = options.grid.borderWidth;
                                          for (var j = 0; j < axes.length; ++j) {
                                  var axis = axes[j], box = axis.box,
                                          t = axis.tickLength, x, y, xoff, yoff;
                                          if (!axis.show || axis.ticks.length == 0)
                                          continue;
                                          ctx.lineWidth = 1;
                                          // find the edges
                                          if (axis.direction == "x") {
                                  x = 0;
                                          if (t == "full")
                                          y = (axis.position == "top" ? 0 : plotHeight);
                                          else
                                          y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
                                  }
                                  else {
                                  y = 0;
                                          if (t == "full")
                                          x = (axis.position == "left" ? 0 : plotWidth);
                                          else
                                          x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
                                  }
  
                                  // draw tick bar
                                  if (!axis.innermost) {
                                  ctx.strokeStyle = axis.options.color;
                                          ctx.beginPath();
                                          xoff = yoff = 0;
                                          if (axis.direction == "x")
                                          xoff = plotWidth + 1;
                                          else
                                          yoff = plotHeight + 1;
                                          if (ctx.lineWidth == 1) {
                                  if (axis.direction == "x") {
                                  y = Math.floor(y) + 0.5;
                                  } else {
                                  x = Math.floor(x) + 0.5;
                                  }
                                  }
  
                                  ctx.moveTo(x, y);
                                          ctx.lineTo(x + xoff, y + yoff);
                                          ctx.stroke();
                                  }
  
                                  // draw ticks
  
                                  ctx.strokeStyle = axis.options.tickColor;
                                          ctx.beginPath();
                                          for (i = 0; i < axis.ticks.length; ++i) {
                                  var v = axis.ticks[i].v;
                                          xoff = yoff = 0;
                                          if (isNaN(v) || v < axis.min || v > axis.max
                                                  // skip those lying on the axes if we got a border
                                                  || (t == "full"
                                                          && ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
                                                          && (v == axis.min || v == axis.max)))
                                          continue;
                                          if (axis.direction == "x") {
                                  x = axis.p2c(v);
                                          yoff = t == "full" ? - plotHeight : t;
                                          if (axis.position == "top")
                                          yoff = - yoff;
                                  }
                                  else {
                                  y = axis.p2c(v);
                                          xoff = t == "full" ? - plotWidth : t;
                                          if (axis.position == "left")
                                          xoff = - xoff;
                                  }
  
                                  if (ctx.lineWidth == 1) {
                                  if (axis.direction == "x")
                                          x = Math.floor(x) + 0.5;
                                          else
                                          y = Math.floor(y) + 0.5;
                                  }
  
                                  ctx.moveTo(x, y);
                                          ctx.lineTo(x + xoff, y + yoff);
                                  }
  
                                  ctx.stroke();
                                  }
  
  
                                  // draw border
                                  if (bw) {
                                  // If either borderWidth or borderColor is an object, then draw the border
                                  // line by line instead of as one rectangle
                                  bc = options.grid.borderColor;
                                          if (typeof bw == "object" || typeof bc == "object") {
                                  if (typeof bw !== "object") {
                                  bw = {top: bw, right: bw, bottom: bw, left: bw};
                                  }
                                  if (typeof bc !== "object") {
                                  bc = {top: bc, right: bc, bottom: bc, left: bc};
                                  }
  
                                  if (bw.top > 0) {
                                  ctx.strokeStyle = bc.top;
                                          ctx.lineWidth = bw.top;
                                          ctx.beginPath();
                                          ctx.moveTo(0 - bw.left, 0 - bw.top / 2);
                                          ctx.lineTo(plotWidth, 0 - bw.top / 2);
                                          ctx.stroke();
                                  }
  
                                  if (bw.right > 0) {
                                  ctx.strokeStyle = bc.right;
                                          ctx.lineWidth = bw.right;
                                          ctx.beginPath();
                                          ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
                                          ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
                                          ctx.stroke();
                                  }
  
                                  if (bw.bottom > 0) {
                                  ctx.strokeStyle = bc.bottom;
                                          ctx.lineWidth = bw.bottom;
                                          ctx.beginPath();
                                          ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
                                          ctx.lineTo(0, plotHeight + bw.bottom / 2);
                                          ctx.stroke();
                                  }
  
                                  if (bw.left > 0) {
                                  ctx.strokeStyle = bc.left;
                                          ctx.lineWidth = bw.left;
                                          ctx.beginPath();
                                          ctx.moveTo(0 - bw.left / 2, plotHeight + bw.bottom);
                                          ctx.lineTo(0 - bw.left / 2, 0);
                                          ctx.stroke();
                                  }
                                  }
                                  else {
                                  ctx.lineWidth = bw;
                                          ctx.strokeStyle = options.grid.borderColor;
                                          ctx.strokeRect( - bw / 2, - bw / 2, plotWidth + bw, plotHeight + bw);
                                  }
                                  }
  
                                  ctx.restore();
                                  }
  
                                  function drawAxisLabels() {
  
                                  $.each(allAxes(), function (_, axis) {
                                  var box = axis.box,
                                          legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
                                          layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
                                          font = axis.options.font || "flot-tick-label tickLabel",
                                          tick, x, y, halign, valign;
                                          // Remove text before checking for axis.show and ticks.length;
                                          // otherwise plugins, like flot-tickrotor, that draw their own
                                          // tick labels will end up with both theirs and the defaults.
  
                                          surface.removeText(layer);
                                          if (!axis.show || axis.ticks.length == 0)
                                          return;
                                          for (var i = 0; i < axis.ticks.length; ++i) {
  
                                  tick = axis.ticks[i];
                                          if (!tick.label || tick.v < axis.min || tick.v > axis.max)
                                          continue;
                                          if (axis.direction == "x") {
                                  halign = "center";
                                          x = plotOffset.left + axis.p2c(tick.v);
                                          if (axis.position == "bottom") {
                                  y = box.top + box.padding;
                                  } else {
                                  y = box.top + box.height - box.padding;
                                          valign = "bottom";
                                  }
                                  } else {
                                  valign = "middle";
                                          y = plotOffset.top + axis.p2c(tick.v);
                                          if (axis.position == "left") {
                                  x = box.left + box.width - box.padding;
                                          halign = "right";
                                  } else {
                                  x = box.left + box.padding;
                                  }
                                  }
  
                                  surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
                                  }
                                  });
                                  }
  
                                  function drawSeries(series) {
                                  if (series.lines.show)
                                          drawSeriesLines(series);
                                          if (series.bars.show)
                                          drawSeriesBars(series);
                                          if (series.points.show)
                                          drawSeriesPoints(series);
                                  }
  
                                  function drawSeriesLines(series) {
                                  function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
                                  var points = datapoints.points,
                                          ps = datapoints.pointsize,
                                          prevx = null, prevy = null;
                                          ctx.beginPath();
                                          for (var i = ps; i < points.length; i += ps) {
                                  var x1 = points[i - ps], y1 = points[i - ps + 1],
                                          x2 = points[i], y2 = points[i + 1];
                                          if (x1 == null || x2 == null)
                                          continue;
                                          // clip with ymin
                                          if (y1 <= y2 && y1 < axisy.min) {
                                  if (y2 < axisy.min)
                                          continue; // line segment is outside
                                          // compute new intersection point
                                          x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y1 = axisy.min;
                                  }
                                  else if (y2 <= y1 && y2 < axisy.min) {
                                  if (y1 < axisy.min)
                                          continue;
                                          x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y2 = axisy.min;
                                  }
  
                                  // clip with ymax
                                  if (y1 >= y2 && y1 > axisy.max) {
                                  if (y2 > axisy.max)
                                          continue;
                                          x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y1 = axisy.max;
                                  }
                                  else if (y2 >= y1 && y2 > axisy.max) {
                                  if (y1 > axisy.max)
                                          continue;
                                          x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y2 = axisy.max;
                                  }
  
                                  // clip with xmin
                                  if (x1 <= x2 && x1 < axisx.min) {
                                  if (x2 < axisx.min)
                                          continue;
                                          y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x1 = axisx.min;
                                  }
                                  else if (x2 <= x1 && x2 < axisx.min) {
                                  if (x1 < axisx.min)
                                          continue;
                                          y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x2 = axisx.min;
                                  }
  
                                  // clip with xmax
                                  if (x1 >= x2 && x1 > axisx.max) {
                                  if (x2 > axisx.max)
                                          continue;
                                          y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x1 = axisx.max;
                                  }
                                  else if (x2 >= x1 && x2 > axisx.max) {
                                  if (x1 > axisx.max)
                                          continue;
                                          y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x2 = axisx.max;
                                  }
  
                                  if (x1 != prevx || y1 != prevy)
                                          ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
                                          prevx = x2;
                                          prevy = y2;
                                          ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
                                  }
                                  ctx.stroke();
                                  }
  
                                  function plotLineArea(datapoints, axisx, axisy) {
                                  var points = datapoints.points,
                                          ps = datapoints.pointsize,
                                          bottom = Math.min(Math.max(0, axisy.min), axisy.max),
                                          i = 0, top, areaOpen = false,
                                          ypos = 1, segmentStart = 0, segmentEnd = 0;
                                          // we process each segment in two turns, first forward
                                          // direction to sketch out top, then once we hit the
                                          // end we go backwards to sketch the bottom
                                          while (true) {
                                  if (ps > 0 && i > points.length + ps)
                                          break;
                                          i += ps; // ps is negative if going backwards
  
                                          var x1 = points[i - ps],
                                          y1 = points[i - ps + ypos],
                                          x2 = points[i], y2 = points[i + ypos];
                                          if (areaOpen) {
                                  if (ps > 0 && x1 != null && x2 == null) {
                                  // at turning point
                                  segmentEnd = i;
                                          ps = - ps;
                                          ypos = 2;
                                          continue;
                                  }
  
                                  if (ps < 0 && i == segmentStart + ps) {
                                  // done with the reverse sweep
                                  ctx.fill();
                                          areaOpen = false;
                                          ps = - ps;
                                          ypos = 1;
                                          i = segmentStart = segmentEnd + ps;
                                          continue;
                                  }
                                  }
  
                                  if (x1 == null || x2 == null)
                                          continue;
                                          // clip x values
  
                                          // clip with xmin
                                          if (x1 <= x2 && x1 < axisx.min) {
                                  if (x2 < axisx.min)
                                          continue;
                                          y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x1 = axisx.min;
                                  }
                                  else if (x2 <= x1 && x2 < axisx.min) {
                                  if (x1 < axisx.min)
                                          continue;
                                          y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x2 = axisx.min;
                                  }
  
                                  // clip with xmax
                                  if (x1 >= x2 && x1 > axisx.max) {
                                  if (x2 > axisx.max)
                                          continue;
                                          y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x1 = axisx.max;
                                  }
                                  else if (x2 >= x1 && x2 > axisx.max) {
                                  if (x1 > axisx.max)
                                          continue;
                                          y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
                                          x2 = axisx.max;
                                  }
  
                                  if (!areaOpen) {
                                  // open area
                                  ctx.beginPath();
                                          ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
                                          areaOpen = true;
                                  }
  
                                  // now first check the case where both is outside
                                  if (y1 >= axisy.max && y2 >= axisy.max) {
                                  ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
                                          ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
                                          continue;
                                  }
                                  else if (y1 <= axisy.min && y2 <= axisy.min) {
                                  ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
                                          ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
                                          continue;
                                  }
  
                                  // else it's a bit more complicated, there might
                                  // be a flat maxed out rectangle first, then a
                                  // triangular cutout or reverse; to find these
                                  // keep track of the current x values
                                  var x1old = x1, x2old = x2;
                                          // clip the y values, without shortcutting, we
                                          // go through all cases in turn
  
                                          // clip with ymin
                                          if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
                                  x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y1 = axisy.min;
                                  }
                                  else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
                                  x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y2 = axisy.min;
                                  }
  
                                  // clip with ymax
                                  if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
                                  x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y1 = axisy.max;
                                  }
                                  else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
                                  x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
                                          y2 = axisy.max;
                                  }
  
                                  // if the x value was changed we got a rectangle
                                  // to fill
                                  if (x1 != x1old) {
                                  ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
                                          // it goes to (x1, y1), but we fill that below
                                  }
  
                                  // fill triangular section, this sometimes result
                                  // in redundant points if (x1, y1) hasn't changed
                                  // from previous line to, but we just ignore that
                                  ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
                                          ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
                                          // fill the other rectangle if it's there
                                          if (x2 != x2old) {
                                  ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
                                          ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
                                  }
                                  }
                                  }
  
                                  ctx.save();
                                          ctx.translate(plotOffset.left, plotOffset.top);
                                          ctx.lineJoin = "round";
                                          var lw = series.lines.lineWidth,
                                          sw = series.shadowSize;
                                          // FIXME: consider another form of shadow when filling is turned on
                                          if (lw > 0 && sw > 0) {
                                  // draw shadow as a thick and thin line with transparency
                                  ctx.lineWidth = sw;
                                          ctx.strokeStyle = "rgba(0,0,0,0.1)";
                                          // position shadow at angle from the mid of line
                                          var angle = Math.PI / 18;
                                          plotLine(series.datapoints, Math.sin(angle) * (lw / 2 + sw / 2), Math.cos(angle) * (lw / 2 + sw / 2), series.xaxis, series.yaxis);
                                          ctx.lineWidth = sw / 2;
                                          plotLine(series.datapoints, Math.sin(angle) * (lw / 2 + sw / 4), Math.cos(angle) * (lw / 2 + sw / 4), series.xaxis, series.yaxis);
                                  }
  
                                  ctx.lineWidth = lw;
                                          ctx.strokeStyle = series.color;
                                          var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
                                          if (fillStyle) {
                                  ctx.fillStyle = fillStyle;
                                          plotLineArea(series.datapoints, series.xaxis, series.yaxis);
                                  }
  
                                  if (lw > 0)
                                          plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
                                          ctx.restore();
                                  }
  
                                  function drawSeriesPoints(series) {
                                  function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
                                  var points = datapoints.points, ps = datapoints.pointsize;
                                          for (var i = 0; i < points.length; i += ps) {
                                  var x = points[i], y = points[i + 1];
                                          if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
                                          continue;
                                          ctx.beginPath();
                                          x = axisx.p2c(x);
                                          y = axisy.p2c(y) + offset;
                                          if (symbol == "circle")
                                          ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
                                          else
                                          symbol(ctx, x, y, radius, shadow);
                                          ctx.closePath();
                                          if (fillStyle) {
                                  ctx.fillStyle = fillStyle;
                                          ctx.fill();
                                  }
                                  ctx.stroke();
                                  }
                                  }
  
                                  ctx.save();
                                          ctx.translate(plotOffset.left, plotOffset.top);
                                          var lw = series.points.lineWidth,
                                          sw = series.shadowSize,
                                          radius = series.points.radius,
                                          symbol = series.points.symbol;
                                          // If the user sets the line width to 0, we change it to a very 
                                          // small value. A line width of 0 seems to force the default of 1.
                                          // Doing the conditional here allows the shadow setting to still be 
                                          // optional even with a lineWidth of 0.
  
                                          if (lw == 0)
                                          lw = 0.0001;
                                          if (lw > 0 && sw > 0) {
                                  // draw shadow in two steps
                                  var w = sw / 2;
                                          ctx.lineWidth = w;
                                          ctx.strokeStyle = "rgba(0,0,0,0.1)";
                                          plotPoints(series.datapoints, radius, null, w + w / 2, true,
                                                  series.xaxis, series.yaxis, symbol);
                                          ctx.strokeStyle = "rgba(0,0,0,0.2)";
                                          plotPoints(series.datapoints, radius, null, w / 2, true,
                                                  series.xaxis, series.yaxis, symbol);
                                  }
  
                                  ctx.lineWidth = lw;
                                          ctx.strokeStyle = series.color;
                                          plotPoints(series.datapoints, radius,
                                                  getFillStyle(series.points, series.color), 0, false,
                                                  series.xaxis, series.yaxis, symbol);
                                          ctx.restore();
                                  }
  
                                  function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
                                  var left, right, bottom, top,
                                          drawLeft, drawRight, drawTop, drawBottom,
                                          tmp;
                                          // in horizontal mode, we start the bar from the left
                                          // instead of from the bottom so it appears to be
                                          // horizontal rather than vertical
                                          if (horizontal) {
                                  drawBottom = drawRight = drawTop = true;
                                          drawLeft = false;
                                          left = b;
                                          right = x;
                                          top = y + barLeft;
                                          bottom = y + barRight;
                                          // account for negative bars
                                          if (right < left) {
                                  tmp = right;
                                          right = left;
                                          left = tmp;
                                          drawLeft = true;
                                          drawRight = false;
                                  }
                                  }
                                  else {
                                  drawLeft = drawRight = drawTop = true;
                                          drawBottom = false;
                                          left = x + barLeft;
                                          right = x + barRight;
                                          bottom = b;
                                          top = y;
                                          // account for negative bars
                                          if (top < bottom) {
                                  tmp = top;
                                          top = bottom;
                                          bottom = tmp;
                                          drawBottom = true;
                                          drawTop = false;
                                  }
                                  }
  
                                  // clip
                                  if (right < axisx.min || left > axisx.max ||
                                          top < axisy.min || bottom > axisy.max)
                                          return;
                                          if (left < axisx.min) {
                                  left = axisx.min;
                                          drawLeft = false;
                                  }
  
                                  if (right > axisx.max) {
                                  right = axisx.max;
                                          drawRight = false;
                                  }
  
                                  if (bottom < axisy.min) {
                                  bottom = axisy.min;
                                          drawBottom = false;
                                  }
  
                                  if (top > axisy.max) {
                                  top = axisy.max;
                                          drawTop = false;
                                  }
  
                                  left = axisx.p2c(left);
                                          bottom = axisy.p2c(bottom);
                                          right = axisx.p2c(right);
                                          top = axisy.p2c(top);
                                          // fill the bar
                                          if (fillStyleCallback) {
                                  c.fillStyle = fillStyleCallback(bottom, top);
                                          c.fillRect(left, top, right - left, bottom - top)
                                  }
  
                                  // draw outline
                                  if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
                                  c.beginPath();
                                          // FIXME: inline moveTo is buggy with excanvas
                                          c.moveTo(left, bottom);
                                          if (drawLeft)
                                          c.lineTo(left, top);
                                          else
                                          c.moveTo(left, top);
                                          if (drawTop)
                                          c.lineTo(right, top);
                                          else
                                          c.moveTo(right, top);
                                          if (drawRight)
                                          c.lineTo(right, bottom);
                                          else
                                          c.moveTo(right, bottom);
                                          if (drawBottom)
                                          c.lineTo(left, bottom);
                                          else
                                          c.moveTo(left, bottom);
                                          c.stroke();
                                  }
                                  }
  
                                  function drawSeriesBars(series) {
                                  function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
                                  var points = datapoints.points, ps = datapoints.pointsize;
                                          for (var i = 0; i < points.length; i += ps) {
                                  if (points[i] == null)
                                          continue;
                                          drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
                                  }
                                  }
  
                                  ctx.save();
                                          ctx.translate(plotOffset.left, plotOffset.top);
                                          // FIXME: figure out a way to add shadows (for instance along the right edge)
                                          ctx.lineWidth = series.bars.lineWidth;
                                          ctx.strokeStyle = series.color;
                                          var barLeft;
                                          switch (series.bars.align) {
                                  case "left":
                                          barLeft = 0;
                                          break;
                                          case "right":
                                          barLeft = - series.bars.barWidth;
                                          break;
                                          default:
                                          barLeft = - series.bars.barWidth / 2;
                                  }
  
                                  var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
                                          plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
                                          ctx.restore();
                                  }
  
                                  function getFillStyle(filloptions, seriesColor, bottom, top) {
                                  var fill = filloptions.fill;
                                          if (!fill)
                                          return null;
                                          if (filloptions.fillColor)
                                          return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
                                          var c = $.color.parse(seriesColor);
                                          c.a = typeof fill == "number" ? fill : 0.4;
                                          c.normalize();
                                          return c.toString();
                                  }
  
                                  function insertLegend() {
  
                                  if (options.legend.container != null) {
                                  $(options.legend.container).html("");
                                  } else {
                                  placeholder.find(".legend").remove();
                                  }
  
                                  if (!options.legend.show) {
                                  return;
                                  }
  
                                  var fragments = [], entries = [], rowStarted = false,
                                          lf = options.legend.labelFormatter, s, label;
                                          // Build a list of legend entries, with each having a label and a color
  
                                          for (var i = 0; i < series.length; ++i) {
                                  s = series[i];
                                          if (s.label) {
                                  label = lf ? lf(s.label, s) : s.label;
                                          if (label) {
                                  entries.push({
                                  label: label,
                                          color: s.color
                                  });
                                  }
                                  }
                                  }
  
                                  // Sort the legend using either the default or a custom comparator
  
                                  if (options.legend.sorted) {
                                  if ($.isFunction(options.legend.sorted)) {
                                  entries.sort(options.legend.sorted);
                                  } else if (options.legend.sorted == "reverse") {
                                  entries.reverse();
                                  } else {
                                  var ascending = options.legend.sorted != "descending";
                                          entries.sort(function(a, b) {
                                          return a.label == b.label ? 0 : (
                                                  (a.label < b.label) != ascending ? 1 : - 1   // Logical XOR
                                                  );
                                          });
                                  }
                                  }
  
                                  // Generate markup for the list of entries, in their final order
  
                                  for (var i = 0; i < entries.length; ++i) {
  
                                  var entry = entries[i];
                                          if (i % options.legend.noColumns == 0) {
                                  if (rowStarted)
                                          fragments.push('</tr>');
                                          fragments.push('<tr>');
                                          rowStarted = true;
                                  }
  
                                  fragments.push(
                                          '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
                                          '<td class="legendLabel">' + entry.label + '</td>'
                                          );
                                  }
  
                                  if (rowStarted)
                                          fragments.push('</tr>');
                                          if (fragments.length == 0)
                                          return;
                                          var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
                                          if (options.legend.container != null)
                                          $(options.legend.container).html(table);
                                          else {
                                          var pos = "",
                                                  p = options.legend.position,
                                                  m = options.legend.margin;
                                                  if (m[0] == null)
                                                  m = [m, m];
                                                  if (p.charAt(0) == "n")
                                                  pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
                                                  else if (p.charAt(0) == "s")
                                                  pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
                                                  if (p.charAt(1) == "e")
                                                  pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
                                                  else if (p.charAt(1) == "w")
                                                  pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
                                                  var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos + ';') + '</div>').appendTo(placeholder);
                                                  if (options.legend.backgroundOpacity != 0.0) {
                                          // put in the transparent background
                                          // separately to avoid blended labels and
                                          // label boxes
                                          var c = options.legend.backgroundColor;
                                                  if (c == null) {
                                          c = options.grid.backgroundColor;
                                                  if (c && typeof c == "string")
                                                  c = $.color.parse(c);
                                                  else
                                                  c = $.color.extract(legend, 'background-color');
                                                  c.a = 1;
                                                  c = c.toString();
                                          }
                                          var div = legend.children();
                                                  $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos + 'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
                                          }
                                          }
                                  }
  
  
                                  // interactive features
  
                                  var highlights = [],
                                          redrawTimeout = null;
                                          // returns the data item the mouse is over, or null if none is found
                                                  function findNearbyItem(mouseX, mouseY, seriesFilter) {
                                                  var maxDistance = options.grid.mouseActiveRadius,
                                                          smallestDistance = maxDistance * maxDistance + 1,
                                                          item = null, foundPoint = false, i, j, ps;
                                                          for (i = series.length - 1; i >= 0; --i) {
                                                  if (!seriesFilter(series[i]))
                                                          continue;
                                                          var s = series[i],
                                                          axisx = s.xaxis,
                                                          axisy = s.yaxis,
                                                          points = s.datapoints.points,
                                                          mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
                                                          my = axisy.c2p(mouseY),
                                                          maxx = maxDistance / axisx.scale,
                                                          maxy = maxDistance / axisy.scale;
                                                          ps = s.datapoints.pointsize;
                                                          // with inverse transforms, we can't use the maxx/maxy
                                                          // optimization, sadly
                                                          if (axisx.options.inverseTransform)
                                                          maxx = Number.MAX_VALUE;
                                                          if (axisy.options.inverseTransform)
                                                          maxy = Number.MAX_VALUE;
                                                          if (s.lines.show || s.points.show) {
                                                  for (j = 0; j < points.length; j += ps) {
                                                  var x = points[j], y = points[j + 1];
                                                          if (x == null)
                                                          continue;
                                                          // For points and lines, the cursor must be within a
                                                          // certain distance to the data point
                                                          if (x - mx > maxx || x - mx < - maxx ||
                                                                  y - my > maxy || y - my < - maxy)
                                                          continue;
                                                          // We have to calculate distances in pixels, not in
                                                          // data units, because the scales of the axes may be different
                                                          var dx = Math.abs(axisx.p2c(x) - mouseX),
                                                          dy = Math.abs(axisy.p2c(y) - mouseY),
                                                          dist = dx * dx + dy * dy; // we save the sqrt
  
                                                          // use <= to ensure last point takes precedence
                                                          // (last generally means on top of)
                                                          if (dist < smallestDistance) {
                                                  smallestDistance = dist;
                                                          item = [i, j / ps];
                                                  }
                                                  }
                                                  }
  
                                                  if (s.bars.show && !item) { // no other point can be nearby
  
                                                  var barLeft, barRight;
                                                          switch (s.bars.align) {
                                                  case "left":
                                                          barLeft = 0;
                                                          break;
                                                          case "right":
                                                          barLeft = - s.bars.barWidth;
                                                          break;
                                                          default:
                                                          barLeft = - s.bars.barWidth / 2;
                                                  }
  
                                                  barRight = barLeft + s.bars.barWidth;
                                                          for (j = 0; j < points.length; j += ps) {
                                                  var x = points[j], y = points[j + 1], b = points[j + 2];
                                                          if (x == null)
                                                          continue;
                                                          // for a bar graph, the cursor must be inside the bar
                                                          if (series[i].bars.horizontal ?
                                                                  (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
                                                                          my >= y + barLeft && my <= y + barRight) :
                                                                  (mx >= x + barLeft && mx <= x + barRight &&
                                                                          my >= Math.min(b, y) && my <= Math.max(b, y)))
                                                          item = [i, j / ps];
                                                  }
                                                  }
                                                  }
  
                                                  if (item) {
                                                  i = item[0];
                                                          j = item[1];
                                                          ps = series[i].datapoints.pointsize;
                                                          return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
                                                                  dataIndex: j,
                                                                  series: series[i],
                                                                  seriesIndex: i };
                                                  }
  
                                                  return null;
                                                  }
  
                                          function onMouseMove(e) {
                                          if (options.grid.hoverable)
                                                  triggerClickHoverEvent("plothover", e,
                                                          function (s) { return s["hoverable"] != false; });
                                          }
  
                                          function onMouseLeave(e) {
                                          if (options.grid.hoverable)
                                                  triggerClickHoverEvent("plothover", e,
                                                          function (s) { return false; });
                                          }
  
                                          function onClick(e) {
                                          triggerClickHoverEvent("plotclick", e,
                                                  function (s) { return s["clickable"] != false; });
                                          }
  
                                          // trigger click or hover event (they send the same parameters
                                          // so we share their code)
                                          function triggerClickHoverEvent(eventname, event, seriesFilter) {
                                          var offset = eventHolder.offset(),
                                                  canvasX = event.pageX - offset.left - plotOffset.left,
                                                  canvasY = event.pageY - offset.top - plotOffset.top,
                                                  pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
                                                  pos.pageX = event.pageX;
                                                  pos.pageY = event.pageY;
                                                  var item = findNearbyItem(canvasX, canvasY, seriesFilter);
                                                  if (item) {
                                          // fill in mouse pos for any listeners out there
                                          item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
                                                  item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
                                          }
  
                                          if (options.grid.autoHighlight) {
                                          // clear auto-highlights
                                          for (var i = 0; i < highlights.length; ++i) {
                                          var h = highlights[i];
                                                  if (h.auto == eventname &&
                                                          !(item && h.series == item.series &&
                                                                  h.point[0] == item.datapoint[0] &&
                                                                  h.point[1] == item.datapoint[1]))
                                                  unhighlight(h.series, h.point);
                                          }
  
                                          if (item)
                                                  highlight(item.series, item.datapoint, eventname);
                                          }
  
                                          placeholder.trigger(eventname, [ pos, item ]);
                                          }
  
                                          function triggerRedrawOverlay() {
                                          var t = options.interaction.redrawOverlayInterval;
                                                  if (t == - 1) {      // skip event queue
                                          drawOverlay();
                                                  return;
                                          }
  
                                          if (!redrawTimeout)
                                                  redrawTimeout = setTimeout(drawOverlay, t);
                                          }
  
                                          function drawOverlay() {
                                          redrawTimeout = null;
                                                  // draw highlights
                                                  octx.save();
                                                  overlay.clear();
                                                  octx.translate(plotOffset.left, plotOffset.top);
                                                  var i, hi;
                                                  for (i = 0; i < highlights.length; ++i) {
                                          hi = highlights[i];
                                                  if (hi.series.bars.show)
                                                  drawBarHighlight(hi.series, hi.point);
                                                  else
                                                  drawPointHighlight(hi.series, hi.point);
                                          }
                                          octx.restore();
                                                  executeHooks(hooks.drawOverlay, [octx]);
                                          }
  
                                          function highlight(s, point, auto) {
                                          if (typeof s == "number")
                                                  s = series[s];
                                                  if (typeof point == "number") {
                                          var ps = s.datapoints.pointsize;
                                                  point = s.datapoints.points.slice(ps * point, ps * (point + 1));
                                          }
  
                                          var i = indexOfHighlight(s, point);
                                                  if (i == - 1) {
                                          highlights.push({ series: s, point: point, auto: auto });
                                                  triggerRedrawOverlay();
                                          }
                                          else if (!auto)
                                                  highlights[i].auto = false;
                                          }
  
                                          function unhighlight(s, point) {
                                          if (s == null && point == null) {
                                          highlights = [];
                                                  triggerRedrawOverlay();
                                                  return;
                                          }
  
                                          if (typeof s == "number")
                                                  s = series[s];
                                                  if (typeof point == "number") {
                                          var ps = s.datapoints.pointsize;
                                                  point = s.datapoints.points.slice(ps * point, ps * (point + 1));
                                          }
  
                                          var i = indexOfHighlight(s, point);
                                                  if (i != - 1) {
                                          highlights.splice(i, 1);
                                                  triggerRedrawOverlay();
                                          }
                                          }
  
                                          function indexOfHighlight(s, p) {
                                          for (var i = 0; i < highlights.length; ++i) {
                                          var h = highlights[i];
                                                  if (h.series == s && h.point[0] == p[0]
                                                          && h.point[1] == p[1])
                                                  return i;
                                          }
                                          return - 1;
                                          }
  
                                          function drawPointHighlight(series, point) {
                                          var x = point[0], y = point[1],
                                                  axisx = series.xaxis, axisy = series.yaxis,
                                                  highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
                                                  if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
                                                  return;
                                                  var pointRadius = series.points.radius + series.points.lineWidth / 2;
                                                  octx.lineWidth = pointRadius;
                                                  octx.strokeStyle = highlightColor;
                                                  var radius = 1.5 * pointRadius;
                                                  x = axisx.p2c(x);
                                                  y = axisy.p2c(y);
                                                  octx.beginPath();
                                                  if (series.points.symbol == "circle")
                                                  octx.arc(x, y, radius, 0, 2 * Math.PI, false);
                                                  else
                                                  series.points.symbol(octx, x, y, radius, false);
                                                  octx.closePath();
                                                  octx.stroke();
                                          }
  
                                          function drawBarHighlight(series, point) {
                                          var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
                                                  fillStyle = highlightColor,
                                                  barLeft;
                                                  switch (series.bars.align) {
                                          case "left":
                                                  barLeft = 0;
                                                  break;
                                                  case "right":
                                                  barLeft = - series.bars.barWidth;
                                                  break;
                                                  default:
                                                  barLeft = - series.bars.barWidth / 2;
                                          }
  
                                          octx.lineWidth = series.bars.lineWidth;
                                                  octx.strokeStyle = highlightColor;
                                                  drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
                                                          function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
                                          }
  
                                          function getColorOrGradient(spec, bottom, top, defaultColor) {
                                          if (typeof spec == "string")
                                                  return spec;
                                                  else {
                                                  // assume this is a gradient spec; IE currently only
                                                  // supports a simple vertical gradient properly, so that's
                                                  // what we support too
                                                  var gradient = ctx.createLinearGradient(0, top, 0, bottom);
                                                          for (var i = 0, l = spec.colors.length; i < l; ++i) {
                                                  var c = spec.colors[i];
                                                          if (typeof c != "string") {
                                                  var co = $.color.parse(defaultColor);
                                                          if (c.brightness != null)
                                                          co = co.scale('rgb', c.brightness);
                                                          if (c.opacity != null)
                                                          co.a *= c.opacity;
                                                          c = co.toString();
                                                  }
                                                  gradient.addColorStop(i / (l - 1), c);
                                                  }
  
                                                  return gradient;
                                                  }
                                          }
                                          }
  
                                  // Add the plot function to the top level of the jQuery object
  
                                  $.plot = function(placeholder, data, options) {
                                  //var t0 = new Date();
                                  var plot = new Plot($(placeholder), data, options, $.plot.plugins);
                                          //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
                                          return plot;
                                  };
                                          $.plot.version = "0.8.3";
                                          $.plot.plugins = [];
                                          // Also add the plot function as a chainable property
  
                                          $.fn.plot = function(data, options) {
                                          return this.each(function() {
                                          $.plot(this, data, options);
                                          });
                                          };
                                          // round to nearby lower multiple of base
                                                  function floorInBase(n, base) {
                                                  return base * Math.floor(n / base);
                                                  }
  
                                          })(jQuery);
  