text: (function(){
  
  var nv = window.nv || {};
  
  nv.version = '0.0.1a';
  nv.dev = true //set false when in production
  
  window.nv = nv;
  
  nv.tooltip = {}; // For the tooltip system
  nv.utils = {}; // Utility subsystem
  nv.models = {}; //stores all the possible models/components
  nv.charts = {}; //stores all the ready to use charts
  nv.graphs = []; //stores all the graphs currently on the page
  nv.logs = {}; //stores some statistics and potential error messages
  
  nv.dispatch = d3.dispatch('render_start', 'render_end');
  
  // *************************************************************************
  //  Development render timers - disabled if dev = false
  
  if (nv.dev) {
    nv.dispatch.on('render_start', function(e) {
      nv.logs.startTime = +new Date();
    });
  
    nv.dispatch.on('render_end', function(e) {
      nv.logs.endTime = +new Date();
      nv.logs.totalTime = nv.logs.endTime - nv.logs.startTime;
      nv.log('total', nv.logs.totalTime); // used for development, to keep track of graph generation times
    });
  }
  
  // ********************************************
  //  Public Core NV functions
  
  // Logs all arguments, and returns the last so you can test things in place
  nv.log = function() {
    if (nv.dev && console.log && console.log.apply)
      console.log.apply(console, arguments)
    else if (nv.dev && console.log && Function.prototype.bind) {
      var log = Function.prototype.bind.call(console.log, console);
      log.apply(console, arguments);
    }
    return arguments[arguments.length - 1];
  };
  
  
  nv.render = function render(step) {
    step = step || 1; // number of graphs to generate in each timout loop
  
    render.active = true;
    nv.dispatch.render_start();
  
    setTimeout(function() {
      var chart, graph;
  
      for (var i = 0; i < step && (graph = render.queue[i]); i++) {
        chart = graph.generate();
        if (typeof graph.callback == typeof(Function)) graph.callback(chart);
        nv.graphs.push(chart);
      }
  
      render.queue.splice(0, i);
  
      if (render.queue.length) setTimeout(arguments.callee, 0);
      else { nv.render.active = false; nv.dispatch.render_end(); }
    }, 0);
  };
  
  nv.render.active = false;
  nv.render.queue = [];
  
  nv.addGraph = function(obj) {
    if (typeof arguments[0] === typeof(Function))
      obj = {generate: arguments[0], callback: arguments[1]};
  
    nv.render.queue.push(obj);
  
    if (!nv.render.active) nv.render();
  };
  
  nv.identity = function(d) { return d; };
  
  nv.strip = function(s) { return s.replace(/(\s|&)/g,''); };
  
  function daysInMonth(month,year) {
    return (new Date(year, month+1, 0)).getDate();
  }
  
  function d3_time_range(floor, step, number) {
    return function(t0, t1, dt) {
      var time = floor(t0), times = [];
      if (time < t0) step(time);
      if (dt > 1) {
        while (time < t1) {
          var date = new Date(+time);
          if ((number(date) % dt === 0)) times.push(date);
          step(time);
        }
      } else {
        while (time < t1) { times.push(new Date(+time)); step(time); }
      }
      return times;
    };
  }
  
  d3.time.monthEnd = function(date) {
    return new Date(date.getFullYear(), date.getMonth(), 0);
  };
  
  d3.time.monthEnds = d3_time_range(d3.time.monthEnd, function(date) {
      date.setUTCDate(date.getUTCDate() + 1);
      date.setDate(daysInMonth(date.getMonth() + 1, date.getFullYear()));
    }, function(date) {
      return date.getMonth();
    }
  );
  
  
  /*****
   * A no frills tooltip implementation.
   *****/
  
  
  (function() {
  
    var nvtooltip = window.nv.tooltip = {};
  
    nvtooltip.show = function(pos, content, gravity, dist, parentContainer, classes) {
  
      var container = document.createElement('div');
          container.className = 'nvtooltip ' + (classes ? classes : 'xy-tooltip');
  
      gravity = gravity || 's';
      dist = dist || 20;
  
      var body = parentContainer ? parentContainer : document.getElementsByTagName('body')[0];
  
      container.innerHTML = content;
      container.style.left = 0;
      container.style.top = 0;
      container.style.opacity = 0;
  
      body.appendChild(container);
  
      var height = parseInt(container.offsetHeight),
          width = parseInt(container.offsetWidth),
          windowWidth = nv.utils.windowSize().width,
          windowHeight = nv.utils.windowSize().height,
          scrollTop = window.scrollY,
          scrollLeft = window.scrollX,
          left, top;
  
      windowHeight = window.innerWidth >= document.body.scrollWidth ? windowHeight : windowHeight - 16;
      windowWidth = window.innerHeight >= document.body.scrollHeight ? windowWidth : windowWidth - 16;
  
      var tooltipTop = function ( Elem ) {
          var offsetTop = top;
          do {
              if( !isNaN( Elem.offsetTop ) ) {
                  offsetTop += (Elem.offsetTop);
              }
          } while( Elem = Elem.offsetParent );
          return offsetTop;
      }
  
      var tooltipLeft = function ( Elem ) {
          var offsetLeft = left;
          do {
              if( !isNaN( Elem.offsetLeft ) ) {
                  offsetLeft += (Elem.offsetLeft);
              }
          } while( Elem = Elem.offsetParent );
          return offsetLeft;
      }
  
      switch (gravity) {
        case 'e':
          left = pos[0] - width - dist;
          top = pos[1] - (height / 2);
          var tLeft = tooltipLeft(container);
          var tTop = tooltipTop(container);
          if (tLeft < scrollLeft) left = pos[0] + dist > scrollLeft ? pos[0] + dist : scrollLeft - tLeft + left;
          if (tTop < scrollTop) top = scrollTop - tTop + top;
          if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
          break;
        case 'w':
          left = pos[0] + dist;
          top = pos[1] - (height / 2);
          if (tLeft + width > windowWidth) left = pos[0] - width - dist;
          if (tTop < scrollTop) top = scrollTop + 5;
          if (tTop + height > scrollTop + windowHeight) top = scrollTop - height - 5;
          break;
        case 'n':
          left = pos[0] - (width / 2) - 5;
          top = pos[1] + dist;
          var tLeft = tooltipLeft(container);
          var tTop = tooltipTop(container);
          if (tLeft < scrollLeft) left = scrollLeft + 5;
          if (tLeft + width > windowWidth) left = left - width/2 + 5;
          if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
          break;
        case 's':
          left = pos[0] - (width / 2);
          top = pos[1] - height - dist;
          var tLeft = tooltipLeft(container);
          var tTop = tooltipTop(container);
          if (tLeft < scrollLeft) left = scrollLeft + 5;
          if (tLeft + width > windowWidth) left = left - width/2 + 5;
          if (scrollTop > tTop) top = scrollTop;
          break;
      }
  
  
      container.style.left = left+'px';
      container.style.top = top+'px';
      container.style.opacity = 1;
      container.style.position = 'absolute'; //fix scroll bar issue
      container.style.pointerEvents = 'none'; //fix scroll bar issue
  
      return container;
    };
  
    nvtooltip.cleanup = function() {
  
        // Find the tooltips, mark them for removal by this class (so others cleanups won't find it)
        var tooltips = document.getElementsByClassName('nvtooltip');
        var purging = [];
        while(tooltips.length) {
          purging.push(tooltips[0]);
          tooltips[0].style.transitionDelay = '0 !important';
          tooltips[0].style.opacity = 0;
          tooltips[0].className = 'nvtooltip-pending-removal';
        }
  
  
        setTimeout(function() {
  
            while (purging.length) {
               var removeMe = purging.pop();
                removeMe.parentNode.removeChild(removeMe);
            }
      }, 500);
    };
  
  
  })();
  
  nv.utils.windowSize = function() {
      // Sane defaults
      var size = {width: 640, height: 480};
  
      // Earlier IE uses Doc.body
      if (document.body && document.body.offsetWidth) {
          size.width = document.body.offsetWidth;
          size.height = document.body.offsetHeight;
      }
  
      // IE can use depending on mode it is in
      if (document.compatMode=='CSS1Compat' &&
          document.documentElement &&
          document.documentElement.offsetWidth ) {
          size.width = document.documentElement.offsetWidth;
          size.height = document.documentElement.offsetHeight;
      }
  
      // Most recent browsers use
      if (window.innerWidth && window.innerHeight) {
          size.width = window.innerWidth;
          size.height = window.innerHeight;
      }
      return (size);
  };
  
  
  
  // Easy way to bind multiple functions to window.onresize
  // TODO: give a way to remove a function after its bound, other than removing alkl of them
  nv.utils.windowResize = function(fun){
    var oldresize = window.onresize;
  
    window.onresize = function(e) {
      if (typeof oldresize == 'function') oldresize(e);
      fun(e);
    }
  }
  
  // Backwards compatible way to implement more d3-like coloring of graphs.
  // If passed an array, wrap it in a function which implements the old default
  // behaviour
  nv.utils.getColor = function(color) {
      if (!arguments.length) return nv.utils.defaultColor(); //if you pass in nothing, get default colors back
  
      if( Object.prototype.toString.call( color ) === '[object Array]' )
          return function(d, i) { return d.color || color[i % color.length]; };
      else
          return color;
          //can't really help it if someone passes rubish as color
  }
  
  // Default color chooser uses the index of an object as before.
  nv.utils.defaultColor = function() {
      var colors = d3.scale.category20().range();
      return function(d, i) { return d.color || colors[i % colors.length] };
  }
  
  
  // Returns a color function that takes the result of 'getKey' for each series and
  // looks for a corresponding color from the dictionary,
  nv.utils.customTheme = function(dictionary, getKey, defaultColors) {
    getKey = getKey || function(series) { return series.key }; // use default series.key if getKey is undefined
    defaultColors = defaultColors || d3.scale.category20().range(); //default color function
  
    var defIndex = defaultColors.length; //current default color (going in reverse)
  
    return function(series, index) {
      var key = getKey(series);
  
      if (!defIndex) defIndex = defaultColors.length; //used all the default colors, start over
  
      if (typeof dictionary[key] !== "undefined")
        return (typeof dictionary[key] === "function") ? dictionary[key]() : dictionary[key];
      else
        return defaultColors[--defIndex]; // no match in dictionary, use default color
    }
  }
  
  
  
  // From the PJAX example on d3js.org, while this is not really directly needed
  // it's a very cool method for doing pjax, I may expand upon it a little bit,
  // open to suggestions on anything that may be useful
  nv.utils.pjax = function(links, content) {
    d3.selectAll(links).on("click", function() {
      history.pushState(this.href, this.textContent, this.href);
      load(this.href);
      d3.event.preventDefault();
    });
  
    function load(href) {
      d3.html(href, function(fragment) {
        var target = d3.select(content).node();
        target.parentNode.replaceChild(d3.select(fragment).select(content).node(), target);
        nv.utils.pjax(links, content);
      });
    }
  
    d3.select(window).on("popstate", function() {
      if (d3.event.state) load(d3.event.state);
    });
  }
  
  nv.models.axis = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var axis = d3.svg.axis()
      ;
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 75 //only used for tickLabel currently
      , height = 60 //only used for tickLabel currently
      , scale = d3.scale.linear()
      , axisLabelText = null
      , showMaxMin = true //TODO: showMaxMin should be disabled on all ordinal scaled axes
      , highlightZero = true
      , rotateLabels = 0
      , rotateYLabel = true
      , staggerLabels = false
      , isOrdinal = false
      , ticks = null
      ;
  
    axis
      .scale(scale)
      .orient('bottom')
      .tickFormat(function(d) { return d })
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var scale0;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-axis').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-axis');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g')
  
        //------------------------------------------------------------
  
  
        if (ticks !== null)
          axis.ticks(ticks);
        else if (axis.orient() == 'top' || axis.orient() == 'bottom')
          axis.ticks(Math.abs(scale.range()[1] - scale.range()[0]) / 100);
  
  
        //TODO: consider calculating width/height based on whether or not label is added, for reference in charts using this component
  
  
        d3.transition(g)
            .call(axis);
  
        scale0 = scale0 || axis.scale();
  
        var fmt = axis.tickFormat();
        if (fmt == null) {
          fmt = scale0.tickFormat();
        }
  
        var axisLabel = g.selectAll('text.nv-axislabel')
            .data([axisLabelText || null]);
        axisLabel.exit().remove();
        switch (axis.orient()) {
          case 'top':
            axisLabel.enter().append('text').attr('class', 'nv-axislabel')
                .attr('text-anchor', 'middle')
                .attr('y', 0);
            var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
            axisLabel
                .attr('x', w/2);
            if (showMaxMin) {
              var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                             .data(scale.domain());
              axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
              axisMaxMin.exit().remove();
              axisMaxMin
                  .attr('transform', function(d,i) {
                    return 'translate(' + scale(d) + ',0)'
                  })
                .select('text')
                  .attr('dy', '0em')
                  .attr('y', -axis.tickPadding())
                  .attr('text-anchor', 'middle')
                  .text(function(d,i) {
                    var v = fmt(d);
                    return ('' + v).match('NaN') ? '' : v;
                  });
              d3.transition(axisMaxMin)
                  .attr('transform', function(d,i) {
                    return 'translate(' + scale.range()[i] + ',0)'
                  });
            }
            break;
          case 'bottom':
            var xLabelMargin = 36;
            var maxTextWidth = 30;
            var xTicks = g.selectAll('g').select("text");
            if (rotateLabels%360) {
              //Calculate the longest xTick width
              xTicks.each(function(d,i){
                var width = this.getBBox().width;
                if(width > maxTextWidth) maxTextWidth = width;
              });
              //Convert to radians before calculating sin. Add 30 to margin for healthy padding.
              var sin = Math.abs(Math.sin(rotateLabels*Math.PI/180));
              var xLabelMargin = (sin ? sin*maxTextWidth : maxTextWidth)+30;
              //Rotate all xTicks
              xTicks
                .attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 0,0)' })
                .attr('text-anchor', rotateLabels%360 > 0 ? 'start' : 'end');
            }
            axisLabel.enter().append('text').attr('class', 'nv-axislabel')
              .attr('text-anchor', 'middle')
              .attr('y', xLabelMargin);
            var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
            axisLabel
                .attr('x', w/2);
            if (showMaxMin) {
            //if (showMaxMin && !isOrdinal) {
              var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                             //.data(scale.domain())
                             .data([scale.domain()[0], scale.domain()[scale.domain().length - 1]]);
              axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
              axisMaxMin.exit().remove();
              axisMaxMin
                  .attr('transform', function(d,i) {
                    return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
                  })
                .select('text')
                  .attr('dy', '.71em')
                  .attr('y', axis.tickPadding())
                  .attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 0,0)' })
                  .attr('text-anchor', rotateLabels ? (rotateLabels%360 > 0 ? 'start' : 'end') : 'middle')
                  .text(function(d,i) {
                    var v = fmt(d);
                    return ('' + v).match('NaN') ? '' : v;
                  });
              d3.transition(axisMaxMin)
                  .attr('transform', function(d,i) {
                    //return 'translate(' + scale.range()[i] + ',0)'
                    //return 'translate(' + scale(d) + ',0)'
                    return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
                  });
            }
            if (staggerLabels)
              xTicks
                  .attr('transform', function(d,i) { return 'translate(0,' + (i % 2 == 0 ? '0' : '12') + ')' });
  
            break;
          case 'right':
            axisLabel.enter().append('text').attr('class', 'nv-axislabel')
                .attr('text-anchor', rotateYLabel ? 'middle' : 'begin')
                .attr('transform', rotateYLabel ? 'rotate(90)' : '')
                .attr('y', rotateYLabel ? (-Math.max(margin.right,width) + 12) : -10); //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
            axisLabel
                .attr('x', rotateYLabel ? (scale.range()[0] / 2) : axis.tickPadding());
            if (showMaxMin) {
              var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                             .data(scale.domain());
              axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
                  .style('opacity', 0);
              axisMaxMin.exit().remove();
              axisMaxMin
                  .attr('transform', function(d,i) {
                    return 'translate(0,' + scale(d) + ')'
                  })
                .select('text')
                  .attr('dy', '.32em')
                  .attr('y', 0)
                  .attr('x', axis.tickPadding())
                  .attr('text-anchor', 'start')
                  .text(function(d,i) {
                    var v = fmt(d);
                    return ('' + v).match('NaN') ? '' : v;
                  });
              d3.transition(axisMaxMin)
                  .attr('transform', function(d,i) {
                    return 'translate(0,' + scale.range()[i] + ')'
                  })
                .select('text')
                  .style('opacity', 1);
            }
            break;
          case 'left':
            /*
            //For dynamically placing the label. Can be used with dynamically-sized chart axis margins
            var yTicks = g.selectAll('g').select("text");
            yTicks.each(function(d,i){
              var labelPadding = this.getBBox().width + axis.tickPadding() + 16;
              if(labelPadding > width) width = labelPadding;
            });
            */
            axisLabel.enter().append('text').attr('class', 'nv-axislabel')
                .attr('text-anchor', rotateYLabel ? 'middle' : 'end')
                .attr('transform', rotateYLabel ? 'rotate(-90)' : '')
                .attr('y', rotateYLabel ? (-Math.max(margin.left,width) + 12) : -10); //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
            axisLabel
                .attr('x', rotateYLabel ? (-scale.range()[0] / 2) : -axis.tickPadding());
            if (showMaxMin) {
              var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                             .data(scale.domain());
              axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
                  .style('opacity', 0);
              axisMaxMin.exit().remove();
              axisMaxMin
                  .attr('transform', function(d,i) {
                    return 'translate(0,' + scale0(d) + ')'
                  })
                .select('text')
                  .attr('dy', '.32em')
                  .attr('y', 0)
                  .attr('x', -axis.tickPadding())
                  .attr('text-anchor', 'end')
                  .text(function(d,i) {
                    var v = fmt(d);
                    return ('' + v).match('NaN') ? '' : v;
                  });
              d3.transition(axisMaxMin)
                  .attr('transform', function(d,i) {
                    return 'translate(0,' + scale.range()[i] + ')'
                  })
                .select('text')
                  .style('opacity', 1);
            }
            break;
        }
        axisLabel
            .text(function(d) { return d });
  
  
        if (showMaxMin && (axis.orient() === 'left' || axis.orient() === 'right')) {
          //check if max and min overlap other values, if so, hide the values that overlap
          g.selectAll('g') // the g's wrapping each tick
              .each(function(d,i) {
                d3.select(this).select('text').attr('opacity', 1);
                if (scale(d) < scale.range()[1] + 10 || scale(d) > scale.range()[0] - 10) { // 10 is assuming text height is 16... if d is 0, leave it!
                  if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
                    d3.select(this).attr('opacity', 0);
                  
                  d3.select(this).select('text').attr('opacity', 0); // Don't remove the ZERO line!!
                }
              });
  
          //if Max and Min = 0 only show min, Issue #281
          if (scale.domain()[0] == scale.domain()[1] && scale.domain()[0] == 0)
            wrap.selectAll('g.nv-axisMaxMin')
              .style('opacity', function(d,i) { return !i ? 1 : 0 });
  
        }
  
        if (showMaxMin && (axis.orient() === 'top' || axis.orient() === 'bottom')) {
          var maxMinRange = [];
          wrap.selectAll('g.nv-axisMaxMin')
              .each(function(d,i) {
                try {
                    if (i) // i== 1, max position
                        maxMinRange.push(scale(d) - this.getBBox().width - 4)  //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
                    else // i==0, min position
                        maxMinRange.push(scale(d) + this.getBBox().width + 4)
                }catch (err) {
                    if (i) // i== 1, max position
                        maxMinRange.push(scale(d) - 4)  //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
                    else // i==0, min position
                        maxMinRange.push(scale(d) + 4)
                }
              });
          g.selectAll('g') // the g's wrapping each tick
              .each(function(d,i) {
                if (scale(d) < maxMinRange[0] || scale(d) > maxMinRange[1]) {
                  if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
                    d3.select(this).remove();
                  else
                    d3.select(this).select('text').remove(); // Don't remove the ZERO line!!
                }
              });
        }
  
  
        //highlight zero line ... Maybe should not be an option and should just be in CSS?
        if (highlightZero)
          g.selectAll('line.tick')
            .filter(function(d) { return !parseFloat(Math.round(d*100000)/1000000) }) //this is because sometimes the 0 tick is a very small fraction, TODO: think of cleaner technique
              .classed('zero', true);
  
        //store old scales for use in transitions on update
        scale0 = scale.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.axis = axis;
  
    d3.rebind(chart, axis, 'orient', 'tickValues', 'tickSubdivide', 'tickSize', 'tickPadding', 'tickFormat');
    d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands'); //these are also accessible by chart.scale(), but added common ones directly for ease of use
  
    chart.margin = function(_) {
      if(!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    }
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.ticks = function(_) {
      if (!arguments.length) return ticks;
      ticks = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.axisLabel = function(_) {
      if (!arguments.length) return axisLabelText;
      axisLabelText = _;
      return chart;
    }
  
    chart.showMaxMin = function(_) {
      if (!arguments.length) return showMaxMin;
      showMaxMin = _;
      return chart;
    }
  
    chart.highlightZero = function(_) {
      if (!arguments.length) return highlightZero;
      highlightZero = _;
      return chart;
    }
  
    chart.scale = function(_) {
      if (!arguments.length) return scale;
      scale = _;
      axis.scale(scale);
      isOrdinal = typeof scale.rangeBands === 'function';
      d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands');
      return chart;
    }
  
    chart.rotateYLabel = function(_) {
      if(!arguments.length) return rotateYLabel;
      rotateYLabel = _;
      return chart;
    }
  
    chart.rotateLabels = function(_) {
      if(!arguments.length) return rotateLabels;
      rotateLabels = _;
      return chart;
    }
  
    chart.staggerLabels = function(_) {
      if (!arguments.length) return staggerLabels;
      staggerLabels = _;
      return chart;
    };
  
  
    //============================================================
  
  
    return chart;
  }
  //TODO: consider deprecating and using multibar with single series for this
  nv.models.historicalBar = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , x = d3.scale.linear()
      , y = d3.scale.linear()
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , forceX = []
      , forceY = [0]
      , padData = false
      , clipEdge = true
      , color = nv.utils.defaultColor()
      , xDomain
      , yDomain
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x   .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) ))
  
        if (padData)
          x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
        else
          x.range([0, availableWidth]);
  
        y   .domain(yDomain || d3.extent(data[0].values.map(getY).concat(forceY) ))
            .range([availableHeight, 0]);
  
        // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
        if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
        if (x.domain()[0] === x.domain()[1])
          x.domain()[0] ?
              x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
            : x.domain([-1,1]);
  
        if (y.domain()[0] === y.domain()[1])
          y.domain()[0] ?
              y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
            : y.domain([-1,1]);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-bar').data([data[0].values]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bar');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-bars');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        container
            .on('click', function(d,i) {
              dispatch.chartClick({
                  data: d,
                  index: i,
                  pos: d3.event,
                  id: id
              });
            });
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-chart-clip-path-' + id)
          .append('rect');
  
        wrap.select('#nv-chart-clip-path-' + id + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-chart-clip-path-' + id + ')' : '');
  
  
  
        var bars = wrap.select('.nv-bars').selectAll('.nv-bar')
            .data(function(d) { return d });
  
        bars.exit().remove();
  
  
        var barsEnter = bars.enter().append('rect')
            //.attr('class', function(d,i,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
            .attr('x', 0 )
            .attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
            .attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) })
            .on('mouseover', function(d,i) {
              d3.select(this).classed('hover', true);
              dispatch.elementMouseover({
                  point: d,
                  series: data[0],
                  pos: [x(getX(d,i)), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                  pointIndex: i,
                  seriesIndex: 0,
                  e: d3.event
              });
  
            })
            .on('mouseout', function(d,i) {
                  d3.select(this).classed('hover', false);
                  dispatch.elementMouseout({
                      point: d,
                      series: data[0],
                      pointIndex: i,
                      seriesIndex: 0,
                      e: d3.event
                  });
            })
            .on('click', function(d,i) {
                  dispatch.elementClick({
                      //label: d[label],
                      value: getY(d,i),
                      data: d,
                      index: i,
                      pos: [x(getX(d,i)), y(getY(d,i))],
                      e: d3.event,
                      id: id
                  });
                d3.event.stopPropagation();
            })
            .on('dblclick', function(d,i) {
                dispatch.elementDblClick({
                    //label: d[label],
                    value: getY(d,i),
                    data: d,
                    index: i,
                    pos: [x(getX(d,i)), y(getY(d,i))],
                    e: d3.event,
                    id: id
                });
                d3.event.stopPropagation();
            });
  
        bars
            .attr('fill', function(d,i) { return color(d, i); })
            .attr('class', function(d,i,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
            .attr('transform', function(d,i) { return 'translate(' + (x(getX(d,i)) - availableWidth / data[0].values.length * .45) + ',0)'; })  //TODO: better width calculations that don't assume always uniform data spacing;w
            .attr('width', (availableWidth / data[0].values.length) * .9 )
  
  
        d3.transition(bars)
            //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
            .attr('y', function(d,i) {
              return getY(d,i) < 0 ?
                      y(0) :
                      y(0) - y(getY(d,i)) < 1 ?
                        y(0) - 1 :
                        y(getY(d,i))
            })
            .attr('height', function(d,i) { return Math.max(Math.abs(y(getY(d,i)) - y(0)),1) });
            //.order();  // not sure if this makes any sense for this model
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.forceX = function(_) {
      if (!arguments.length) return forceX;
      forceX = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.padData = function(_) {
      if (!arguments.length) return padData;
      padData = _;
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  // Chart design based on the recommendations of Stephen Few. Implementation
  // based on the work of Clint Ivy, Jamie Love, and Jason Davies.
  // http://projects.instantcognition.com/protovis/bulletchart/
  
  nv.models.bullet = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , orient = 'left' // TODO top & bottom
      , reverse = false
      , ranges = function(d) { return d.ranges }
      , markers = function(d) { return d.markers }
      , measures = function(d) { return d.measures }
      , forceX = [0] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
      , width = 380
      , height = 30
      , tickFormat = null
      , color = nv.utils.getColor(['#1f77b4'])
      , dispatch = d3.dispatch('elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(d, i) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
        var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
            markerz = markers.call(this, d, i).slice().sort(d3.descending),
            measurez = measures.call(this, d, i).slice().sort(d3.descending);
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        // Compute the new x-scale.
        var x1 = d3.scale.linear()
            .domain( d3.extent(d3.merge([forceX, rangez])) )
            .range(reverse ? [availableWidth, 0] : [0, availableWidth]);
  
        // Retrieve the old x-scale, if this is an update.
        var x0 = this.__chart__ || d3.scale.linear()
            .domain([0, Infinity])
            .range(x1.range());
  
        // Stash the new scale.
        this.__chart__ = x1;
  
  
        var rangeMin = d3.min(rangez), //rangez[2]
            rangeMax = d3.max(rangez), //rangez[0]
            rangeAvg = rangez[1];
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-bullet').data([d]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bullet');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('rect').attr('class', 'nv-range nv-rangeMax');
        gEnter.append('rect').attr('class', 'nv-range nv-rangeAvg');
        gEnter.append('rect').attr('class', 'nv-range nv-rangeMin');
        gEnter.append('rect').attr('class', 'nv-measure');
        gEnter.append('path').attr('class', 'nv-markerTriangle');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
  
        var w0 = function(d) { return Math.abs(x0(d) - x0(0)) }, // TODO: could optimize by precalculating x0(0) and x1(0)
            w1 = function(d) { return Math.abs(x1(d) - x1(0)) };
        var xp0 = function(d) { return d < 0 ? x0(d) : x0(0) },
            xp1 = function(d) { return d < 0 ? x1(d) : x1(0) };
  
  
        g.select('rect.nv-rangeMax')
            .attr('height', availableHeight)
            .attr('width', w1(rangeMax > 0 ? rangeMax : rangeMin))
            .attr('x', xp1(rangeMax > 0 ? rangeMax : rangeMin))
            .datum(rangeMax > 0 ? rangeMax : rangeMin)
            /*
            .attr('x', rangeMin < 0 ?
                           rangeMax > 0 ?
                               x1(rangeMin)
                             : x1(rangeMax)
                         : x1(0))
                        */
  
        g.select('rect.nv-rangeAvg')
            .attr('height', availableHeight)
            .attr('width', w1(rangeAvg))
            .attr('x', xp1(rangeAvg))
            .datum(rangeAvg)
            /*
            .attr('width', rangeMax <= 0 ?
                               x1(rangeMax) - x1(rangeAvg)
                             : x1(rangeAvg) - x1(rangeMin))
            .attr('x', rangeMax <= 0 ?
                           x1(rangeAvg)
                         : x1(rangeMin))
                        */
  
        g.select('rect.nv-rangeMin')
            .attr('height', availableHeight)
            .attr('width', w1(rangeMax))
            .attr('x', xp1(rangeMax))
            .attr('width', w1(rangeMax > 0 ? rangeMin : rangeMax))
            .attr('x', xp1(rangeMax > 0 ? rangeMin : rangeMax))
            .datum(rangeMax > 0 ? rangeMin : rangeMax)
            /*
            .attr('width', rangeMax <= 0 ?
                               x1(rangeAvg) - x1(rangeMin)
                             : x1(rangeMax) - x1(rangeAvg))
            .attr('x', rangeMax <= 0 ?
                           x1(rangeMin)
                         : x1(rangeAvg))
                        */
  
        g.select('rect.nv-measure')
            .style('fill', color)
            .attr('height', availableHeight / 3)
            .attr('y', availableHeight / 3)
            .attr('width', measurez < 0 ?
                               x1(0) - x1(measurez[0])
                             : x1(measurez[0]) - x1(0))
            .attr('x', xp1(measurez))
            .on('mouseover', function() {
                dispatch.elementMouseover({
                  value: measurez[0],
                  label: 'Current',
                  pos: [x1(measurez[0]), availableHeight/2]
                })
            })
            .on('mouseout', function() {
                dispatch.elementMouseout({
                  value: measurez[0],
                  label: 'Current'
                })
            })
  
        var h3 =  availableHeight / 6;
        g.selectAll('path.nv-markerTriangle')
            .attr('transform', function(d) { return 'translate(' + x1(markerz[0]) + ',' + (availableHeight / 2) + ')' })
            .attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
            .on('mouseover', function() {
              dispatch.elementMouseover({
                value: markerz[0],
                label: 'Previous',
                pos: [x1(markerz[0]), availableHeight/2]
              })
            })
            .on('mouseout', function() {
              dispatch.elementMouseout({
                value: markerz[0],
                label: 'Previous'
              })
            });
  
  
        wrap.selectAll('.nv-range')
            .on('mouseover', function(d,i) {
              var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";
  
              dispatch.elementMouseover({
                value: d,
                label: label,
                pos: [x1(d), availableHeight/2]
              })
            })
            .on('mouseout', function(d,i) {
              var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";
  
              dispatch.elementMouseout({
                value: d,
                label: label
              })
            })
  
  /* // THIS IS THE PREVIOUS BULLET IMPLEMENTATION, WILL REMOVE SHORTLY
        // Update the range rects.
        var range = g.selectAll('rect.nv-range')
            .data(rangez);
  
        range.enter().append('rect')
            .attr('class', function(d, i) { return 'nv-range nv-s' + i; })
            .attr('width', w0)
            .attr('height', availableHeight)
            .attr('x', reverse ? x0 : 0)
            .on('mouseover', function(d,i) { 
                dispatch.elementMouseover({
                  value: d,
                  label: (i <= 0) ? 'Maximum' : (i > 1) ? 'Minimum' : 'Mean', //TODO: make these labels a variable
                  pos: [x1(d), availableHeight/2]
                })
            })
            .on('mouseout', function(d,i) { 
                dispatch.elementMouseout({
                  value: d,
                  label: (i <= 0) ? 'Minimum' : (i >=1) ? 'Maximum' : 'Mean' //TODO: make these labels a variable
                })
            })
  
        d3.transition(range)
            .attr('x', reverse ? x1 : 0)
            .attr('width', w1)
            .attr('height', availableHeight);
  
  
        // Update the measure rects.
        var measure = g.selectAll('rect.nv-measure')
            .data(measurez);
  
        measure.enter().append('rect')
            .attr('class', function(d, i) { return 'nv-measure nv-s' + i; })
            .style('fill', function(d,i) { return color(d,i ) })
            .attr('width', w0)
            .attr('height', availableHeight / 3)
            .attr('x', reverse ? x0 : 0)
            .attr('y', availableHeight / 3)
            .on('mouseover', function(d) { 
                dispatch.elementMouseover({
                  value: d,
                  label: 'Current', //TODO: make these labels a variable
                  pos: [x1(d), availableHeight/2]
                })
            })
            .on('mouseout', function(d) { 
                dispatch.elementMouseout({
                  value: d,
                  label: 'Current' //TODO: make these labels a variable
                })
            })
  
        d3.transition(measure)
            .attr('width', w1)
            .attr('height', availableHeight / 3)
            .attr('x', reverse ? x1 : 0)
            .attr('y', availableHeight / 3);
  
  
  
        // Update the marker lines.
        var marker = g.selectAll('path.nv-markerTriangle')
            .data(markerz);
  
        var h3 =  availableHeight / 6;
        marker.enter().append('path')
            .attr('class', 'nv-markerTriangle')
            .attr('transform', function(d) { return 'translate(' + x0(d) + ',' + (availableHeight / 2) + ')' })
            .attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
            .on('mouseover', function(d,i) {
                dispatch.elementMouseover({
                  value: d,
                  label: 'Previous',
                  pos: [x1(d), availableHeight/2]
                })
            })
            .on('mouseout', function(d,i) {
                dispatch.elementMouseout({
                  value: d,
                  label: 'Previous'
                })
            });
  
        d3.transition(marker)
            .attr('transform', function(d) { return 'translate(' + (x1(d) - x1(0)) + ',' + (availableHeight / 2) + ')' });
  
        marker.exit().remove();
  */
  
      });
  
      // d3.timer.flush();  // Not needed?
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    // left, right, top, bottom
    chart.orient = function(_) {
      if (!arguments.length) return orient;
      orient = _;
      reverse = orient == 'right' || orient == 'bottom';
      return chart;
    };
  
    // ranges (bad, satisfactory, good)
    chart.ranges = function(_) {
      if (!arguments.length) return ranges;
      ranges = _;
      return chart;
    };
  
    // markers (previous, goal)
    chart.markers = function(_) {
      if (!arguments.length) return markers;
      markers = _;
      return chart;
    };
  
    // measures (actual, forecast)
    chart.measures = function(_) {
      if (!arguments.length) return measures;
      measures = _;
      return chart;
    };
  
    chart.forceX = function(_) {
      if (!arguments.length) return forceX;
      forceX = _;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.tickFormat = function(_) {
      if (!arguments.length) return tickFormat;
      tickFormat = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  };
  
  
  
  // Chart design based on the recommendations of Stephen Few. Implementation
  // based on the work of Clint Ivy, Jamie Love, and Jason Davies.
  // http://projects.instantcognition.com/protovis/bulletchart/
  nv.models.bulletChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var bullet = nv.models.bullet()
      ;
  
    var orient = 'left' // TODO top & bottom
      , reverse = false
      , margin = {top: 5, right: 40, bottom: 20, left: 120}
      , ranges = function(d) { return d.ranges }
      , markers = function(d) { return d.markers }
      , measures = function(d) { return d.measures }
      , width = null
      , height = 55
      , tickFormat = null
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + x + '</h3>' +
                 '<p>' + y + '</p>'
        }
      , noData = 'No Data Available.'
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ) + margin.left,
          top = e.pos[1] + ( offsetElement.offsetTop || 0) + margin.top,
          content = tooltip(e.key, e.label, e.value, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'e' : 'w', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(d, i) {
        var container = d3.select(this);
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            that = this;
  
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!d || !ranges.call(this, d, i)) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', 18 + margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
  
        var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
            markerz = markers.call(this, d, i).slice().sort(d3.descending),
            measurez = measures.call(this, d, i).slice().sort(d3.descending);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-bulletChart').data([d]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bulletChart');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-bulletWrap');
        gEnter.append('g').attr('class', 'nv-titles');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        // Compute the new x-scale.
        var x1 = d3.scale.linear()
            .domain([0, Math.max(rangez[0], markerz[0], measurez[0])])  // TODO: need to allow forceX and forceY, and xDomain, yDomain
            .range(reverse ? [availableWidth, 0] : [0, availableWidth]);
  
        // Retrieve the old x-scale, if this is an update.
        var x0 = this.__chart__ || d3.scale.linear()
            .domain([0, Infinity])
            .range(x1.range());
  
        // Stash the new scale.
        this.__chart__ = x1;
  
        /*
        // Derive width-scales from the x-scales.
        var w0 = bulletWidth(x0),
            w1 = bulletWidth(x1);
  
        function bulletWidth(x) {
          var x0 = x(0);
          return function(d) {
            return Math.abs(x(d) - x(0));
          };
        }
  
        function bulletTranslate(x) {
          return function(d) {
            return 'translate(' + x(d) + ',0)';
          };
        }
        */
  
        var w0 = function(d) { return Math.abs(x0(d) - x0(0)) }, // TODO: could optimize by precalculating x0(0) and x1(0)
            w1 = function(d) { return Math.abs(x1(d) - x1(0)) };
  
  
        var title = gEnter.select('.nv-titles').append('g')
            .attr('text-anchor', 'end')
            .attr('transform', 'translate(-6,' + (height - margin.top - margin.bottom) / 2 + ')');
        title.append('text')
            .attr('class', 'nv-title')
            .text(function(d) { return d.title; });
  
        title.append('text')
            .attr('class', 'nv-subtitle')
            .attr('dy', '1em')
            .text(function(d) { return d.subtitle; });
  
  
  
        bullet
          .width(availableWidth)
          .height(availableHeight)
  
        var bulletWrap = g.select('.nv-bulletWrap');
  
        d3.transition(bulletWrap).call(bullet);
  
  
  
        // Compute the tick format.
        var format = tickFormat || x1.tickFormat( availableWidth / 100 );
  
        // Update the tick groups.
        var tick = g.selectAll('g.nv-tick')
            .data(x1.ticks( availableWidth / 50 ), function(d) {
              return this.textContent || format(d);
            });
  
        // Initialize the ticks with the old scale, x0.
        var tickEnter = tick.enter().append('g')
            .attr('class', 'nv-tick')
            .attr('transform', function(d) { return 'translate(' + x0(d) + ',0)' })
            .style('opacity', 1e-6);
  
        tickEnter.append('line')
            .attr('y1', availableHeight)
            .attr('y2', availableHeight * 7 / 6);
  
        tickEnter.append('text')
            .attr('text-anchor', 'middle')
            .attr('dy', '1em')
            .attr('y', availableHeight * 7 / 6)
            .text(format);
  
  
        // Transition the updating ticks to the new scale, x1.
        var tickUpdate = d3.transition(tick)
            .attr('transform', function(d) { return 'translate(' + x1(d) + ',0)' })
            .style('opacity', 1);
  
        tickUpdate.select('line')
            .attr('y1', availableHeight)
            .attr('y2', availableHeight * 7 / 6);
  
        tickUpdate.select('text')
            .attr('y', availableHeight * 7 / 6);
  
        // Transition the exiting ticks to the new scale, x1.
        d3.transition(tick.exit())
            .attr('transform', function(d) { return 'translate(' + x1(d) + ',0)' })
            .style('opacity', 1e-6)
            .remove();
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        dispatch.on('tooltipShow', function(e) {
          e.key = data[0].title;
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
      });
  
      d3.timer.flush();
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    bullet.dispatch.on('elementMouseover.tooltip', function(e) {
      dispatch.tooltipShow(e);
    });
  
    bullet.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
    chart.bullet = bullet;
  
    d3.rebind(chart, bullet, 'color');
  
    // left, right, top, bottom
    chart.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x;
      reverse = orient == 'right' || orient == 'bottom';
      return chart;
    };
  
    // ranges (bad, satisfactory, good)
    chart.ranges = function(x) {
      if (!arguments.length) return ranges;
      ranges = x;
      return chart;
    };
  
    // markers (previous, goal)
    chart.markers = function(x) {
      if (!arguments.length) return markers;
      markers = x;
      return chart;
    };
  
    // measures (actual, forecast)
    chart.measures = function(x) {
      if (!arguments.length) return measures;
      measures = x;
      return chart;
    };
  
    chart.width = function(x) {
      if (!arguments.length) return width;
      width = x;
      return chart;
    };
  
    chart.height = function(x) {
      if (!arguments.length) return height;
      height = x;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.tickFormat = function(x) {
      if (!arguments.length) return tickFormat;
      tickFormat = x;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  };
  
  
  
  nv.models.cumulativeLineChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var lines = nv.models.line()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , legend = nv.models.legend()
      , controls = nv.models.legend()
      ;
  
    var margin = {top: 30, right: 30, bottom: 50, left: 60}
      , color = nv.utils.defaultColor()
      , width = null
      , height = null
      , showLegend = true
      , tooltips = true
      , showControls = true
      , rescaleY = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' at ' + x + '</p>'
        }
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , id = lines.id()
      , noData = 'No Data Available.'
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    xAxis
      .orient('bottom')
      .tickPadding(7)
      ;
    yAxis
      .orient('left')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
     var dx = d3.scale.linear()
       , index = {i: 0, x: 0}
       ;
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, null, null, offsetElement);
    };
  
  /*
    //Moved to see if we can get better behavior to fix issue #315
    var indexDrag = d3.behavior.drag()
                      .on('dragstart', dragStart)
                      .on('drag', dragMove)
                      .on('dragend', dragEnd);
  
    function dragStart(d,i) {
      d3.select(chart.container)
          .style('cursor', 'ew-resize');
    }
  
    function dragMove(d,i) {
      d.x += d3.event.dx;
      d.i = Math.round(dx.invert(d.x));
  
      d3.select(this).attr('transform', 'translate(' + dx(d.i) + ',0)');
      chart.update();
    }
  
    function dragEnd(d,i) {
      d3.select(chart.container)
          .style('cursor', 'auto');
      chart.update();
    }
  */
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this).classed('nv-chart-' + id, true),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
  
        var indexDrag = d3.behavior.drag()
                          .on('dragstart', dragStart)
                          .on('drag', dragMove)
                          .on('dragend', dragEnd);
  
  
        function dragStart(d,i) {
          d3.select(chart.container)
              .style('cursor', 'ew-resize');
        }
  
        function dragMove(d,i) {
          index.x = d3.event.x;
          index.i = Math.round(dx.invert(index.x));
          updateZero();
        }
  
        function dragEnd(d,i) {
          d3.select(chart.container)
              .style('cursor', 'auto');
        }
  
  
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = lines.xScale();
        y = lines.yScale();
  
  
        if (!rescaleY) {
          var seriesDomains = data
            .filter(function(series) { return !series.disabled })
            .map(function(series,i) {
              var initialDomain = d3.extent(series.values, lines.y());
  
              //account for series being disabled when losing 95% or more
              if (initialDomain[0] < -.95) initialDomain[0] = -.95;
  
              return [
                (initialDomain[0] - initialDomain[1]) / (1 + initialDomain[1]),
                (initialDomain[1] - initialDomain[0]) / (1 + initialDomain[0])
              ];
            });
  
          var completeDomain = [
            d3.min(seriesDomains, function(d) { return d[0] }),
            d3.max(seriesDomains, function(d) { return d[1] })
          ]
  
          lines.yDomain(completeDomain);
        } else {
          lines.yDomain(null);
        }
  
  
        dx  .domain([0, data[0].values.length - 1]) //Assumes all series have same length
            .range([0, availableWidth])
            .clamp(true);
  
        //------------------------------------------------------------
  
  
        var data = indexify(index.i, data);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-cumulativeLine').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-cumulativeLine').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-background');
        gEnter.append('g').attr('class', 'nv-linesWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width(availableWidth);
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(0,' + (-margin.top) +')')
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          var controlsData = [
            { key: 'Re-scale y-axis', disabled: !rescaleY }
          ];
  
          controls.width(140).color(['#444', '#444', '#444']);
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .attr('transform', 'translate(0,' + (-margin.top) +')')
              .call(controls);
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        // Show error if series goes below 100%
        var tempDisabled = data.filter(function(d) { return d.tempDisabled });
  
        wrap.select('.tempDisabled').remove(); //clean-up and prevent duplicates
        if (tempDisabled.length) {
          wrap.append('text').attr('class', 'tempDisabled')
              .attr('x', availableWidth / 2)
              .attr('y', '-.71em')
              .style('text-anchor', 'end')
              .text(tempDisabled.map(function(d) { return d.key }).join(', ') + ' values cannot be calculated for this time period.');
        }
  
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        gEnter.select('.nv-background')
          .append('rect');
  
        g.select('.nv-background rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        lines
          //.x(function(d) { return d.x })
          .y(function(d) { return d.display.y })
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled && !data[i].tempDisabled }));
  
  
  
        var linesWrap = g.select('.nv-linesWrap')
            .datum(data.filter(function(d) { return !d.disabled && !d.tempDisabled }));
  
        //d3.transition(linesWrap).call(lines);
        linesWrap.call(lines);
  
  
        var indexLine = linesWrap.selectAll('.nv-indexLine')
            .data([index]);
        indexLine.enter().append('rect').attr('class', 'nv-indexLine')
            .attr('width', 3)
            .attr('x', -2)
            .attr('fill', 'red')
            .attr('fill-opacity', .5)
            .call(indexDrag)
  
        indexLine
            .attr('transform', function(d) { return 'translate(' + dx(d.i) + ',0)' })
            .attr('height', availableHeight)
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          //Suggest how many ticks based on the chart width and D3 should listen (70 is the optimal number for MM/DD/YY dates)
          .ticks( Math.min(data[0].values.length,availableWidth/70) )
          .tickSize(-availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y.range()[0] + ')');
        d3.transition(g.select('.nv-x.nv-axis'))
            .call(xAxis);
  
  
        yAxis
          .scale(y)
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.nv-y.nv-axis'))
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
  
        function updateZero() {
          indexLine
            .data([index]);
  
          chart.update();
        }
  
        g.select('.nv-background rect')
            .on('click', function() {
              index.x = d3.mouse(this)[0];
              index.i = Math.round(dx.invert(index.x));
              updateZero();
            });
  
        lines.dispatch.on('elementClick', function(e) {
          index.i = e.pointIndex;
          index.x = dx(index.i);
          updateZero();
        });
  
        controls.dispatch.on('legendClick', function(d,i) { 
          d.disabled = !d.disabled;
          rescaleY = !d.disabled;
  
          //selection.transition().call(chart);
          selection.call(chart);
        });
  
  
        legend.dispatch.on('legendClick', function(d,i) { 
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          //selection.transition().call(chart);
          selection.call(chart);
        });
  
  /*
        //
        legend.dispatch.on('legendMouseover', function(d, i) {
          d.hover = true;
          selection.transition().call(chart)
        });
  
        legend.dispatch.on('legendMouseout', function(d, i) {
          d.hover = false;
          selection.transition().call(chart)
        });
  */
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    lines.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.lines = lines;
    chart.legend = legend;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    //============================================================
    // Functions
    //------------------------------------------------------------
  
    /* Normalize the data according to an index point. */
    function indexify(idx, data) {
      return data.map(function(line, i) {
        var v = lines.y()(line.values[idx], idx);
  
        //TODO: implement check below, and disable series if series loses 100% or more cause divide by 0 issue
        if (v < -.95) {
          //if a series loses more than 100%, calculations fail.. anything close can cause major distortion (but is mathematically currect till it hits 100)
          line.tempDisabled = true;
          return line;
        }
  
        line.tempDisabled = false;
  
        line.values = line.values.map(function(point, pointIndex) {
          point.display = {'y': (lines.y()(point, pointIndex) - v) / (1 + v) };
          return point;
        })
  
        return line;
      })
    }
  
    //============================================================
  
  
    return chart;
  }
  //TODO: consider deprecating by adding necessary features to multiBar model
  nv.models.discreteBar = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , x = d3.scale.ordinal()
      , y = d3.scale.linear()
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
      , color = nv.utils.defaultColor()
      , showValues = false
      , valueFormat = d3.format(',.2f')
      , xDomain
      , yDomain
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      , rectClass = 'discreteBar'
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
  
        //add series index to each data point for reference
        data = data.map(function(series, i) {
          series.values = series.values.map(function(point) {
            point.series = i;
            return point;
          });
          return series;
        });
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        // remap and flatten the data for use in calculating the scales' domains
        var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
              data.map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: getX(d,i), y: getY(d,i), y0: d.y0 }
                })
              });
  
        x   .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
            .rangeBands([0, availableWidth], .1);
  
        y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y }).concat(forceY)));
  
  
        // If showValues, pad the Y axis range to account for label height
        if (showValues) y.range([availableHeight - (y.domain()[0] < 0 ? 12 : 0), y.domain()[1] > 0 ? 12 : 0]);
        else y.range([availableHeight, 0]);
  
        //store old scales if they exist
        x0 = x0 || x;
        y0 = y0 || y.copy().range([y(0),y(0)]);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-discretebar').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discretebar');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-groups');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
  
        //TODO: by definition, the discrete bar should not have multiple groups, will modify/remove later
        var groups = wrap.select('.nv-groups').selectAll('.nv-group')
            .data(function(d) { return d }, function(d) { return d.key });
        groups.enter().append('g')
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6);
        d3.transition(groups.exit())
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6)
            .remove();
        groups
            .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
            .classed('hover', function(d) { return d.hover });
        d3.transition(groups)
            .style('stroke-opacity', 1)
            .style('fill-opacity', .75);
  
  
        var bars = groups.selectAll('g.nv-bar')
            .data(function(d) { return d.values });
  
        bars.exit().remove();
  
  
        var barsEnter = bars.enter().append('g')
            .attr('transform', function(d,i,j) {
                return 'translate(' + (x(getX(d,i)) + x.rangeBand() * .05 ) + ', ' + y(0) + ')' 
            })
            .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
              d3.select(this).classed('hover', true);
              dispatch.elementMouseover({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('mouseout', function(d,i) {
              d3.select(this).classed('hover', false);
              dispatch.elementMouseout({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('click', function(d,i) {
              dispatch.elementClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            })
            .on('dblclick', function(d,i) {
              dispatch.elementDblClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            });
  
        barsEnter.append('rect')
            .attr('height', 0)
            .attr('width', x.rangeBand() * .9 / data.length )
  
        if (showValues) {
          barsEnter.append('text')
            .attr('text-anchor', 'middle')
          bars.select('text')
            .attr('x', x.rangeBand() * .9 / 2)
            .attr('y', function(d,i) { return getY(d,i) < 0 ? y(getY(d,i)) - y(0) + 12 : -4 })
            .text(function(d,i) { return valueFormat(getY(d,i)) });
        } else {
          bars.selectAll('text').remove();
        }
  
        bars
            .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive' })
            .style('fill', function(d,i) { return d.color || color(d,i) })
            .style('stroke', function(d,i) { return d.color || color(d,i) })
          .select('rect')
            .attr('class', rectClass)
            .attr('width', x.rangeBand() * .9 / data.length);
        d3.transition(bars)
          //.delay(function(d,i) { return i * 1200 / data[0].values.length })
            .attr('transform', function(d,i) {
              var left = x(getX(d,i)) + x.rangeBand() * .05,
                  top = getY(d,i) < 0 ?
                          y(0) :
                          y(0) - y(getY(d,i)) < 1 ?
                            y(0) - 1 : //make 1 px positive bars show up above y=0
                            y(getY(d,i));
  
                return 'translate(' + left + ', ' + top + ')'
            })
          .select('rect')
            .attr('height', function(d,i) {
              return  Math.max(Math.abs(y(getY(d,i)) - y(0)) || 1)
            });
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.showValues = function(_) {
      if (!arguments.length) return showValues;
      showValues = _;
      return chart;
    };
  
    chart.valueFormat= function(_) {
      if (!arguments.length) return valueFormat;
      valueFormat = _;
      return chart;
    };
  
    chart.rectClass= function(_) {
      if (!arguments.length) return rectClass;
      rectClass = _;
      return chart;
    }
    //============================================================
  
  
    return chart;
  }
  
  nv.models.discreteBarChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var discretebar = nv.models.discreteBar()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      ;
  
    var margin = {top: 15, right: 10, bottom: 50, left: 60}
      , width = null
      , height = null
      , color = nv.utils.getColor()
      , staggerLabels = false
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + x + '</h3>' +
                 '<p>' +  y + '</p>'
        }
      , x
      , y
      , noData = "No Data Available."
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    xAxis
      .orient('bottom')
      .highlightZero(false)
      .showMaxMin(false)
      .tickFormat(function(d) { return d })
      ;
    yAxis
      .orient('left')
      .tickFormat(d3.format(',.1f'))
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(discretebar.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(discretebar.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
  
        chart.update = function() { selection.transition().call(chart); };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = discretebar.xScale();
        y = discretebar.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-discreteBarWithAxes').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discreteBarWithAxes').append('g');
        var defsEnter = gEnter.append('defs');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-barsWrap');
  
        g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        discretebar
          .width(availableWidth)
          .height(availableHeight);
  
  
        var barsWrap = g.select('.nv-barsWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(barsWrap).call(discretebar);
  
        //------------------------------------------------------------
  
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-x-label-clip-' + discretebar.id())
          .append('rect');
  
        g.select('#nv-x-label-clip-' + discretebar.id() + ' rect')
            .attr('width', x.rangeBand() * (staggerLabels ? 2 : 1))
            .attr('height', 16)
            .attr('x', -x.rangeBand() / (staggerLabels ? 1 : 2 ));
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + (y.range()[0] + ((discretebar.showValues() && y.domain()[0] < 0) ? 16 : 0)) + ')');
        //d3.transition(g.select('.nv-x.nv-axis'))
        g.select('.nv-x.nv-axis').transition().duration(0)
            .call(xAxis);
  
  
        var xTicks = g.select('.nv-x.nv-axis').selectAll('g');
  
        if (staggerLabels) {
          xTicks
              .selectAll('text')
              .attr('transform', function(d,i,j) { return 'translate(0,' + (j % 2 == 0 ? '5' : '17') + ')' })
        }
  
        yAxis
          .scale(y)
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.nv-y.nv-axis'))
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    discretebar.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    discretebar.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.discretebar = discretebar;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, discretebar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'id', 'showValues', 'valueFormat');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      discretebar.color(color);
      return chart;
    };
  
    chart.staggerLabels = function(_) {
      if (!arguments.length) return staggerLabels;
      staggerLabels = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.distribution = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 400 //technically width or height depending on x or y....
      , size = 8
      , axis = 'x' // 'x' or 'y'... horizontal or vertical
      , getData = function(d) { return d[axis] }  // defaults d.x or d.y
      , color = nv.utils.defaultColor()
      , scale = d3.scale.linear()
      , domain
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var scale0;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableLength = width - (axis === 'x' ? margin.left + margin.right : margin.top + margin.bottom),
            naxis = axis == 'x' ? 'y' : 'x',
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        scale0 = scale0 || scale;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-distribution').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-distribution');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
  
        //------------------------------------------------------------
  
  
        var distWrap = g.selectAll('g.nv-dist')
            .data(function(d) { return d }, function(d) { return d.key });
  
        distWrap.enter().append('g');
        distWrap
            .attr('class', function(d,i) { return 'nv-dist nv-series-' + i })
            .style('stroke', function(d,i) { return color(d, i) });
  
        var dist = distWrap.selectAll('line.nv-dist' + axis)
            .data(function(d) { return d.values })
        dist.enter().append('line')
            .attr(axis + '1', function(d,i) { return scale0(getData(d,i)) })
            .attr(axis + '2', function(d,i) { return scale0(getData(d,i)) })
        d3.transition(distWrap.exit().selectAll('line.nv-dist' + axis))
            .attr(axis + '1', function(d,i) { return scale(getData(d,i)) })
            .attr(axis + '2', function(d,i) { return scale(getData(d,i)) })
            .style('stroke-opacity', 0)
            .remove();
        dist
            .attr('class', function(d,i) { return 'nv-dist' + axis + ' nv-dist' + axis + '-' + i })
            .attr(naxis + '1', 0)
            .attr(naxis + '2', size);
        d3.transition(dist)
            .attr(axis + '1', function(d,i) { return scale(getData(d,i)) })
            .attr(axis + '2', function(d,i) { return scale(getData(d,i)) })
  
  
        scale0 = scale.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.axis = function(_) {
      if (!arguments.length) return axis;
      axis = _;
      return chart;
    };
  
    chart.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return chart;
    };
  
    chart.getData = function(_) {
      if (!arguments.length) return getData;
      getData = d3.functor(_);
      return chart;
    };
  
    chart.scale = function(_) {
      if (!arguments.length) return scale;
      scale = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.indentedTree = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0} //TODO: implement, maybe as margin on the containing div
      , width = 960
      , height = 500
      , color = nv.utils.defaultColor()
      , id = Math.floor(Math.random() * 10000)
      , header = true
      , noData = "No Data Available."
      , childIndent = 20
      , columns = [{key:'key', label: 'Name', type:'text'}] //TODO: consider functions like chart.addColumn, chart.removeColumn, instead of a block like this
      , tableClass = null
      , iconOpen = 'images/grey-plus.png' //TODO: consider removing this and replacing with a '+' or '-' unless user defines images
      , iconClose = 'images/grey-minus.png'
      , dispatch = d3.dispatch('elementClick', 'elementDblclick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var i = 0,
            depth = 1;
  
        var tree = d3.layout.tree()
            .children(function(d) { return d.values })
            .size([height, childIndent]); //Not sure if this is needed now that the result is HTML
  
        chart.update = function() { selection.transition().call(chart) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
        if (!data[0]) data[0] = {key: noData};
  
        //------------------------------------------------------------
  
  
        var nodes = tree.nodes(data[0]);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = d3.select(this).selectAll('div').data([[nodes]]);
        var wrapEnter = wrap.enter().append('div').attr('class', 'nvd3 nv-wrap nv-indentedtree');
        var tableEnter = wrapEnter.append('table');
        var table = wrap.select('table').attr('width', '100%').attr('class', tableClass);
  
        //------------------------------------------------------------
  
  
        if (header) {
          var thead = tableEnter.append('thead');
  
          var theadRow1 = thead.append('tr');
  
          columns.forEach(function(column) {
            theadRow1
              .append('th')
                .attr('width', column.width ? column.width : '10%')
                .style('text-align', column.type == 'numeric' ? 'right' : 'left')
              .append('span')
                .text(column.label);
          });
        }
  
  
        var tbody = table.selectAll('tbody')
                      .data(function(d) {return d });
        tbody.enter().append('tbody');
  
  
  
        //compute max generations
        depth = d3.max(nodes, function(node) { return node.depth });
        tree.size([height, depth * childIndent]); //TODO: see if this is necessary at all
  
  
        // Update the nodes…
        var node = tbody.selectAll('tr')
            .data(function(d) { return d }, function(d) { return d.id || (d.id == ++i)});
            //.style('display', 'table-row'); //TODO: see if this does anything
  
        node.exit().remove();
  
  
        node.select('img.nv-treeicon')
            .attr('src', icon)
            .classed('folded', folded);
  
        var nodeEnter = node.enter().append('tr');
  
  
        columns.forEach(function(column, index) {
  
          var nodeName = nodeEnter.append('td')
              .style('padding-left', function(d) { return (index ? 0 : d.depth * childIndent + 12 + (icon(d) ? 0 : 16)) + 'px' }, 'important') //TODO: check why I did the ternary here
              .style('text-align', column.type == 'numeric' ? 'right' : 'left');
  
  
          if (index == 0) {
            nodeName.append('img')
                .classed('nv-treeicon', true)
                .classed('nv-folded', folded)
                .attr('src', icon)
                .style('width', '14px')
                .style('height', '14px')
                .style('padding', '0 1px')
                .style('display', function(d) { return icon(d) ? 'inline-block' : 'none'; })
                .on('click', click);
          }
  
  
          nodeName.append('span')
              .attr('class', d3.functor(column.classes) )
              .text(function(d) { return column.format ? column.format(d) :
                                          (d[column.key] || '-') });
  
          if  (column.showCount)
            nodeName.append('span')
                .attr('class', 'nv-childrenCount')
                .text(function(d) {
                  return ((d.values && d.values.length) || (d._values && d._values.length)) ?
                      '(' + ((d.values && d.values.length) || (d._values && d._values.length)) + ')'
                    : ''
                });
  
  
          if (column.click)
            nodeName.select('span').on('click', column.click);
  
        });
  
  
        node
          .order()
          .on('click', function(d) { 
            dispatch.elementClick({
              row: this, //TODO: decide whether or not this should be consistent with scatter/line events or should be an html link (a href)
              data: d,
              pos: [d.x, d.y]
            });
          })
          .on('dblclick', function(d) { 
            dispatch.elementDblclick({
              row: this,
              data: d,
              pos: [d.x, d.y]
            });
          })
          .on('mouseover', function(d) { 
            dispatch.elementMouseover({
              row: this,
              data: d,
              pos: [d.x, d.y]
            });
          })
          .on('mouseout', function(d) { 
            dispatch.elementMouseout({
              row: this,
              data: d,
              pos: [d.x, d.y]
            });
          });
  
  
  
  
        // Toggle children on click.
        function click(d, _, unshift) {
          d3.event.stopPropagation();
  
          if(d3.event.shiftKey && !unshift) {
            //If you shift-click, it'll toggle fold all the children, instead of itself
            d3.event.shiftKey = false;
            d.values && d.values.forEach(function(node){
              if (node.values || node._values) {
                click(node, 0, true);
              }
            });
            return true;
          }
          if(!hasChildren(d)) {
            //download file
            //window.location.href = d.url;
            return true;
          }
          if (d.values) {
            d._values = d.values;
            d.values = null;
          } else {
            d.values = d._values;
            d._values = null;
          }
          chart.update();
        }
  
  
        function icon(d) {
          return (d._values && d._values.length) ? iconOpen : (d.values && d.values.length) ? iconClose : '';
        }
  
        function folded(d) {
          return (d._values && d._values.length);
        }
  
        function hasChildren(d) {
          var values = d.values || d._values;
  
          return (values && values.length);
        }
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      scatter.color(color);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.header = function(_) {
      if (!arguments.length) return header;
      header = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    chart.columns = function(_) {
      if (!arguments.length) return columns;
      columns = _;
      return chart;
    };
  
    chart.tableClass = function(_) {
      if (!arguments.length) return tableClass;
      tableClass = _;
      return chart;
    };
  
    chart.iconOpen = function(_){
       if (!arguments.length) return iconOpen;
      iconOpen = _;
      return chart;
    }
  
    chart.iconClose = function(_){
       if (!arguments.length) return iconClose;
      iconClose = _;
      return chart;
    }
  
    //============================================================
  
  
    return chart;
  }
  nv.models.legend = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 5, right: 0, bottom: 5, left: 0}
      , width = 400
      , height = 20
      , getKey = function(d) { return d.key }
      , color = nv.utils.defaultColor()
      , align = true
      , dispatch = d3.dispatch('legendClick', 'legendDblclick', 'legendMouseover', 'legendMouseout')
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-legend').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-legend').append('g');
        var g = wrap.select('g');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        var series = g.selectAll('.nv-series')
            .data(function(d) { return d });
        var seriesEnter = series.enter().append('g').attr('class', 'nv-series')
            .on('mouseover', function(d,i) {
              dispatch.legendMouseover(d,i);  //TODO: Make consistent with other event objects
            })
            .on('mouseout', function(d,i) {
              dispatch.legendMouseout(d,i);
            })
            .on('click', function(d,i) {
              dispatch.legendClick(d,i);
            })
            .on('dblclick', function(d,i) {
              dispatch.legendDblclick(d,i);
            });
        seriesEnter.append('circle')
            .style('stroke-width', 2)
            .attr('r', 5);
        seriesEnter.append('text')
            .attr('text-anchor', 'start')
            .attr('dy', '.32em')
            .attr('dx', '8');
        series.classed('disabled', function(d) { return d.disabled });
        series.exit().remove();
        series.select('circle')
            .style('fill', function(d,i) { return d.color || color(d,i)})
            .style('stroke', function(d,i) { return d.color || color(d, i) });
        series.select('text').text(getKey);
  
  
        //TODO: implement fixed-width and max-width options (max-width is especially useful with the align option)
  
        // NEW ALIGNING CODE, TODO: clean up
        if (align) {
          var seriesWidths = [];
          series.each(function(d,i) {
                seriesWidths.push(d3.select(this).select('text').node().getComputedTextLength() + 28); // 28 is ~ the width of the circle plus some padding
              });
  
          //nv.log('Series Widths: ', JSON.stringify(seriesWidths));
  
          var seriesPerRow = 0;
          var legendWidth = 0;
          var columnWidths = [];
  
          while ( legendWidth < availableWidth && seriesPerRow < seriesWidths.length) {
            columnWidths[seriesPerRow] = seriesWidths[seriesPerRow];
            legendWidth += seriesWidths[seriesPerRow++];
          }
  
  
          while ( legendWidth > availableWidth && seriesPerRow > 1 ) {
            columnWidths = [];
            seriesPerRow--;
  
            for (k = 0; k < seriesWidths.length; k++) {
              if (seriesWidths[k] > (columnWidths[k % seriesPerRow] || 0) )
                columnWidths[k % seriesPerRow] = seriesWidths[k];
            }
  
            legendWidth = columnWidths.reduce(function(prev, cur, index, array) {
                            return prev + cur;
                          });
          }
          //console.log(columnWidths, legendWidth, seriesPerRow);
  
          var xPositions = [];
          for (var i = 0, curX = 0; i < seriesPerRow; i++) {
              xPositions[i] = curX;
              curX += columnWidths[i];
          }
  
          series
              .attr('transform', function(d, i) {
                return 'translate(' + xPositions[i % seriesPerRow] + ',' + (5 + Math.floor(i / seriesPerRow) * 20) + ')';
              });
  
          //position legend as far right as possible within the total width
          g.attr('transform', 'translate(' + (width - margin.right - legendWidth) + ',' + margin.top + ')');
  
          height = margin.top + margin.bottom + (Math.ceil(seriesWidths.length / seriesPerRow) * 20);
  
        } else {
  
          var ypos = 5,
              newxpos = 5,
              maxwidth = 0,
              xpos;
          series
              .attr('transform', function(d, i) {
                var length = d3.select(this).select('text').node().getComputedTextLength() + 28;
                xpos = newxpos;
  
                if (width < margin.left + margin.right + xpos + length) {
                  newxpos = xpos = 5;
                  ypos += 20;
                }
  
                newxpos += length;
                if (newxpos > maxwidth) maxwidth = newxpos;
  
                return 'translate(' + xpos + ',' + ypos + ')';
              });
  
          //position legend as far right as possible within the total width
          g.attr('transform', 'translate(' + (width - margin.right - maxwidth) + ',' + margin.top + ')');
  
          height = margin.top + margin.bottom + ypos + 15;
  
        }
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.key = function(_) {
      if (!arguments.length) return getKey;
      getKey = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.align = function(_) {
      if (!arguments.length) return align;
      align = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.line = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var  scatter = nv.models.scatter()
      ;
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , color = nv.utils.defaultColor() // a function that returns a color
      , getX = function(d) { return d.x } // accessor to get the x value from a data point
      , getY = function(d) { return d.y } // accessor to get the y value from a data point
      , defined = function(d,i) { return !isNaN(getY(d,i)) && getY(d,i) !== null } // allows a line to be not continous when it is not defined
      , isArea = function(d) { return d.area } // decides if a line is an area or just a line
      , clipEdge = false // if true, masks lines within x and y scale
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , interpolate = "linear" // controls the line interpolation
      ;
  
    scatter
      .size(16) // default size
      .sizeDomain([16,256]) //set to speed up calculation, needs to be unset if there is a custom size accessor
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0 //used to store previous scales
        ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = scatter.xScale();
        y = scatter.yScale();
  
        x0 = x0 || x;
        y0 = y0 || y;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-line').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-line');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g')
  
        gEnter.append('g').attr('class', 'nv-groups');
        gEnter.append('g').attr('class', 'nv-scatterWrap');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
  
  
        scatter
          .width(availableWidth)
          .height(availableHeight)
  
        var scatterWrap = wrap.select('.nv-scatterWrap');
            //.datum(data); // Data automatically trickles down from the wrap
  
        d3.transition(scatterWrap).call(scatter);
  
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-edge-clip-' + scatter.id())
          .append('rect');
  
        wrap.select('#nv-edge-clip-' + scatter.id() + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');
        scatterWrap
            .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');
  
  
  
  
        var groups = wrap.select('.nv-groups').selectAll('.nv-group')
            .data(function(d) { return d }, function(d) { return d.key });
        groups.enter().append('g')
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6);
        d3.transition(groups.exit())
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6)
            .remove();
        groups
            .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
            .classed('hover', function(d) { return d.hover })
            .style('fill', function(d,i){ return color(d, i) })
            .style('stroke', function(d,i){ return color(d, i)});
        d3.transition(groups)
            .style('stroke-opacity', 1)
            .style('fill-opacity', .5);
  
  
  
        var areaPaths = groups.selectAll('path.nv-area')
            .data(function(d) { return isArea(d) ? [d] : [] }); // this is done differently than lines because I need to check if series is an area
        areaPaths.enter().append('path')
            .attr('class', 'nv-area')
            .attr('d', function(d) {
              return d3.svg.area()
                  .interpolate(interpolate)
                  .defined(defined)
                  .x(function(d,i) { return x0(getX(d,i)) })
                  .y0(function(d,i) { return y0(getY(d,i)) })
                  .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                  //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                  .apply(this, [d.values])
            });
        d3.transition(groups.exit().selectAll('path.nv-area'))
            .attr('d', function(d) {
              return d3.svg.area()
                  .interpolate(interpolate)
                  .defined(defined)
                  .x(function(d,i) { return x0(getX(d,i)) })
                  .y0(function(d,i) { return y0(getY(d,i)) })
                  .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                  //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                  .apply(this, [d.values])
            });
        d3.transition(areaPaths)
            .attr('d', function(d) {
              return d3.svg.area()
                  .interpolate(interpolate)
                  .defined(defined)
                  .x(function(d,i) { return x0(getX(d,i)) })
                  .y0(function(d,i) { return y0(getY(d,i)) })
                  .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                  //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                  .apply(this, [d.values])
            });
  
  
  
        var linePaths = groups.selectAll('path.nv-line')
            .data(function(d) { return [d.values] });
        linePaths.enter().append('path')
            .attr('class', 'nv-line')
            .attr('d',
              d3.svg.line()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y(function(d,i) { return y0(getY(d,i)) })
            );
        d3.transition(groups.exit().selectAll('path.nv-line'))
            .attr('d',
              d3.svg.line()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x(getX(d,i)) })
                .y(function(d,i) { return y(getY(d,i)) })
            );
        d3.transition(linePaths)
            .attr('d',
              d3.svg.line()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x(getX(d,i)) })
                .y(function(d,i) { return y(getY(d,i)) })
            );
  
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = scatter.dispatch;
    chart.scatter = scatter;
  
    d3.rebind(chart, scatter, 'id', 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'padData');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      scatter.x(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      scatter.y(_);
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      scatter.color(color);
      return chart;
    };
  
    chart.interpolate = function(_) {
      if (!arguments.length) return interpolate;
      interpolate = _;
      return chart;
    };
  
    chart.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return chart;
    };
  
    chart.isArea = function(_) {
      if (!arguments.length) return isArea;
      isArea = d3.functor(_);
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.lineChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var lines = nv.models.line()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , legend = nv.models.legend()
      ;
  
  //set margin.right to 23 to fit dates on the x-axis within the chart
    var margin = {top: 30, right: 20, bottom: 50, left: 60}
      , color = nv.utils.defaultColor()
      , width = null
      , height = null
      , showLegend = true
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' at ' + x + '</p>'
        }
      , x
      , y
      , noData = 'No Data Available.'
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    xAxis
      .orient('bottom')
      .tickPadding(7)
      ;
    yAxis
      .orient('left')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
  
      // New addition to calculate position if SVG is scaled with viewBox, may move TODO: consider implementing everywhere else
      if (offsetElement) {
        var svg = d3.select(offsetElement).select('svg');
        var viewBox = svg.attr('viewBox');
        if (viewBox) {
          viewBox = viewBox.split(' ');
          var ratio = parseInt(svg.style('width')) / viewBox[2];
          e.pos[0] = e.pos[0] * ratio;
          e.pos[1] = e.pos[1] * ratio;
        }
      }
  
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, null, null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display noData message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = lines.xScale();
        y = lines.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-lineChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineChart').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-linesWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width(availableWidth);
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          wrap.select('.nv-legendWrap')
              .attr('transform', 'translate(0,' + (-margin.top) +')')
        }
  
        //------------------------------------------------------------
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        lines
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }));
  
  
        var linesWrap = g.select('.nv-linesWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(linesWrap).call(lines);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y.range()[0] + ')');
        d3.transition(g.select('.nv-x.nv-axis'))
            .call(xAxis);
  
  
        yAxis
          .scale(y)
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.nv-y.nv-axis'))
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i) { 
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart);
        });
  
  /*
        legend.dispatch.on('legendMouseover', function(d, i) {
          d.hover = true;
          selection.transition().call(chart)
        });
  
        legend.dispatch.on('legendMouseout', function(d, i) {
          d.hover = false;
          selection.transition().call(chart)
        });
  */
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    lines.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.lines = lines;
    chart.legend = legend;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id', 'interpolate');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.linePlusBarChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var lines = nv.models.line()
      , bars = nv.models.historicalBar()
      , xAxis = nv.models.axis()
      , y1Axis = nv.models.axis()
      , y2Axis = nv.models.axis()
      , legend = nv.models.legend()
      ;
  
    var margin = {top: 30, right: 60, bottom: 50, left: 60}
      , width = null
      , height = null
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , color = nv.utils.defaultColor()
      , showLegend = true
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' at ' + x + '</p>';
        }
      , x
      , y1
      , y2
      , noData = "No Data Available."
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    bars
      .padData(true)
      ;
    lines
      .clipEdge(false)
      .padData(true)
      ;
    xAxis
      .orient('bottom')
      .tickPadding(7)
      .highlightZero(false)
      ;
    y1Axis
      .orient('left')
      ;
    y2Axis
      .orient('right')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
          y = (e.series.bar ? y1Axis : y2Axis).tickFormat()(lines.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    //------------------------------------------------------------
  
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        var dataBars = data.filter(function(d) { return !d.disabled && d.bar });
        var dataLines = data.filter(function(d) { return !d.bar }); // removed the !d.disabled clause here to fix Issue #240
  
        //x = xAxis.scale();
        x = dataLines.filter(function(d) { return !d.disabled; }).length ? lines.xScale() : bars.xScale();
        y1 = bars.yScale();
        y2 = lines.yScale();
  
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = d3.select(this).selectAll('g.nv-wrap.nv-linePlusBar').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-linePlusBar').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y1 nv-axis');
        gEnter.append('g').attr('class', 'nv-y2 nv-axis');
        gEnter.append('g').attr('class', 'nv-barsWrap');
        gEnter.append('g').attr('class', 'nv-linesWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width( availableWidth / 2 );
  
          g.select('.nv-legendWrap')
              .datum(data.map(function(series) {
                series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
                series.key = series.originalKey + (series.bar ? ' (left axis)' : ' (right axis)');
                return series;
              }))
            .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
  
        lines
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled && !data[i].bar }))
  
        bars
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled && data[i].bar }))
  
  
  
        var barsWrap = g.select('.nv-barsWrap')
            .datum(dataBars.length ? dataBars : [{values:[]}])
  
        var linesWrap = g.select('.nv-linesWrap')
            .datum(!dataLines[0].disabled ? dataLines : [{values:[]}] );
            //.datum(!dataLines[0].disabled ? dataLines : [{values:dataLines[0].values.map(function(d) { return [d[0], null] }) }] );
  
        d3.transition(barsWrap).call(bars);
        d3.transition(linesWrap).call(lines);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y1.range()[0] + ')');
        d3.transition(g.select('.nv-x.nv-axis'))
            .call(xAxis);
  
  
        y1Axis
          .scale(y1)
          .ticks( availableHeight / 36 )
          .tickSize(-availableWidth, 0);
  
        d3.transition(g.select('.nv-y1.nv-axis'))
            .style('opacity', dataBars.length ? 1 : 0)
            .call(y1Axis);
  
  
        y2Axis
          .scale(y2)
          .ticks( availableHeight / 36 )
          .tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none
  
        g.select('.nv-y2.nv-axis')
            .style('opacity', dataLines.length ? 1 : 0)
            .attr('transform', 'translate(' + availableWidth + ',0)');
            //.attr('transform', 'translate(' + x.range()[1] + ',0)');
  
        d3.transition(g.select('.nv-y2.nv-axis'))
            .call(y2Axis);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i) { 
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    lines.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    bars.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    bars.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.legend = legend;
    chart.lines = lines;
    chart.bars = bars;
    chart.xAxis = xAxis;
    chart.y1Axis = y1Axis;
    chart.y2Axis = y2Axis;
  
    d3.rebind(chart, lines, 'defined', 'size', 'clipVoronoi', 'interpolate');
    //TODO: consider rebinding x, y and some other stuff, and simply do soemthign lile bars.x(lines.x()), etc.
    //d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      lines.x(_);
      bars.x(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      lines.y(_);
      bars.y(_);
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.lineWithFocusChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var lines = nv.models.line()
      , lines2 = nv.models.line()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , x2Axis = nv.models.axis()
      , y2Axis = nv.models.axis()
      , legend = nv.models.legend()
      , brush = d3.svg.brush()
      ;
  
    var margin = {top: 30, right: 30, bottom: 30, left: 60}
      , margin2 = {top: 0, right: 30, bottom: 20, left: 60}
      , color = nv.utils.defaultColor()
      , width = null
      , height = null
      , height2 = 100
      , x
      , y
      , x2
      , y2
      , showLegend = true
      , brushExtent = null
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' at ' + x + '</p>'
        }
      , noData = "No Data Available."
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'brush')
      ;
  
    lines
      .clipEdge(true)
      ;
    lines2
      .interactive(false)
      ;
    xAxis
      .orient('bottom')
      .tickPadding(5)
      ;
    yAxis
      .orient('left')
      ;
    x2Axis
      .orient('bottom')
      .tickPadding(5)
      ;
    y2Axis
      .orient('left')
      ;
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, null, null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight1 = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom - height2,
            availableHeight2 = height2 - margin2.top - margin2.bottom;
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight1 / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = lines.xScale();
        y = lines.yScale();
        x2 = lines2.xScale();
        y2 = lines2.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-lineWithFocusChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineWithFocusChart').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-legendWrap');
  
        var focusEnter = gEnter.append('g').attr('class', 'nv-focus');
        focusEnter.append('g').attr('class', 'nv-x nv-axis');
        focusEnter.append('g').attr('class', 'nv-y nv-axis');
        focusEnter.append('g').attr('class', 'nv-linesWrap');
  
        var contextEnter = gEnter.append('g').attr('class', 'nv-context');
        contextEnter.append('g').attr('class', 'nv-x nv-axis');
        contextEnter.append('g').attr('class', 'nv-y nv-axis');
        contextEnter.append('g').attr('class', 'nv-linesWrap');
        contextEnter.append('g').attr('class', 'nv-brushBackground');
        contextEnter.append('g').attr('class', 'nv-x nv-brush');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width(availableWidth);
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight1 = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom - height2;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(0,' + (-margin.top) +')')
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        lines
          .width(availableWidth)
          .height(availableHeight1)
          .color(
            data
              .map(function(d,i) {
                return d.color || color(d, i);
              })
              .filter(function(d,i) {
                return !data[i].disabled;
            })
          );
  
        lines2
          .defined(lines.defined())
          .width(availableWidth)
          .height(availableHeight2)
          .color(
            data
              .map(function(d,i) {
                return d.color || color(d, i);
              })
              .filter(function(d,i) {
                return !data[i].disabled;
            })
          );
  
        g.select('.nv-context')
            .attr('transform', 'translate(0,' + ( availableHeight1 + margin.bottom + margin2.top) + ')')
  
        var contextLinesWrap = g.select('.nv-context .nv-linesWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(contextLinesWrap).call(lines2);
  
        //------------------------------------------------------------
  
  
        /*
        var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(focusLinesWrap).call(lines);
       */
  
  
        //------------------------------------------------------------
        // Setup Main (Focus) Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight1, 0);
  
        yAxis
          .scale(y)
          .ticks( availableHeight1 / 36 )
          .tickSize( -availableWidth, 0);
  
        g.select('.nv-focus .nv-x.nv-axis')
            .attr('transform', 'translate(0,' + availableHeight1 + ')');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Brush
  
        brush
          .x(x2)
          .on('brush', onBrush);
  
        if (brushExtent) brush.extent(brushExtent);
  
        var brushBG = g.select('.nv-brushBackground').selectAll('g')
            .data([brushExtent || brush.extent()])
  
        var brushBGenter = brushBG.enter()
            .append('g');
  
        brushBGenter.append('rect')
            .attr('class', 'left')
            .attr('x', 0)
            .attr('y', 0)
            .attr('height', availableHeight2);
  
        brushBGenter.append('rect')
            .attr('class', 'right')
            .attr('x', 0)
            .attr('y', 0)
            .attr('height', availableHeight2);
  
        gBrush = g.select('.nv-x.nv-brush')
            .call(brush);
        gBrush.selectAll('rect')
            //.attr('y', -5)
            .attr('height', availableHeight2);
        gBrush.selectAll('.resize').append('path').attr('d', resizePath);
  
        onBrush();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Secondary (Context) Axes
  
        x2Axis
          .scale(x2)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight2, 0);
  
        g.select('.nv-context .nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y2.range()[0] + ')');
        d3.transition(g.select('.nv-context .nv-x.nv-axis'))
            .call(x2Axis);
  
  
        y2Axis
          .scale(y2)
          .ticks( availableHeight2 / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.nv-context .nv-y.nv-axis'))
            .call(y2Axis);
  
        g.select('.nv-context .nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y2.range()[0] + ')');
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
        //============================================================
        // Functions
        //------------------------------------------------------------
  
        // Taken from crossfilter (http://square.github.com/crossfilter/)
        function resizePath(d) {
          var e = +(d == 'e'),
              x = e ? 1 : -1,
              y = availableHeight2 / 3;
          return 'M' + (.5 * x) + ',' + y
              + 'A6,6 0 0 ' + e + ' ' + (6.5 * x) + ',' + (y + 6)
              + 'V' + (2 * y - 6)
              + 'A6,6 0 0 ' + e + ' ' + (.5 * x) + ',' + (2 * y)
              + 'Z'
              + 'M' + (2.5 * x) + ',' + (y + 8)
              + 'V' + (2 * y - 8)
              + 'M' + (4.5 * x) + ',' + (y + 8)
              + 'V' + (2 * y - 8);
        }
  
  
        function updateBrushBG() {
          if (!brush.empty()) brush.extent(brushExtent);
          brushBG
              .data([brush.empty() ? x2.domain() : brushExtent])
              .each(function(d,i) {
                var leftWidth = x2(d[0]) - x.range()[0],
                    rightWidth = x.range()[1] - x2(d[1]);
                d3.select(this).select('.left')
                  .attr('width',  leftWidth < 0 ? 0 : leftWidth);
  
                d3.select(this).select('.right')
                  .attr('x', x2(d[1]))
                  .attr('width', rightWidth < 0 ? 0 : rightWidth);
              });
        }
  
  
        function onBrush() {
          brushExtent = brush.empty() ? null : brush.extent();
          extent = brush.empty() ? x2.domain() : brush.extent();
  
  
          dispatch.brush({extent: extent, brush: brush});
  
  
          updateBrushBG();
  
          // Update Main (Focus)
          var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
              .datum(
                data
                  .filter(function(d) { return !d.disabled })
                  .map(function(d,i) {
                    return {
                      key: d.key,
                      values: d.values.filter(function(d,i) {
                        return lines.x()(d,i) >= extent[0] && lines.x()(d,i) <= extent[1];
                      })
                    }
                  })
              );
          d3.transition(focusLinesWrap).call(lines);
  
  
          // Update Main (Focus) Axes
          d3.transition(g.select('.nv-focus .nv-x.nv-axis'))
              .call(xAxis);
          d3.transition(g.select('.nv-focus .nv-y.nv-axis'))
              .call(yAxis);
        }
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    lines.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.legend = legend;
    chart.lines = lines;
    chart.lines2 = lines2;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
    chart.x2Axis = x2Axis;
    chart.y2Axis = y2Axis;
  
    d3.rebind(chart, lines, 'defined', 'isArea', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
  
    chart.x = function(_) {
      if (!arguments.length) return lines.x;
      lines.x(_);
      lines2.x(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return lines.y;
      lines.y(_);
      lines2.y(_);
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.margin2 = function(_) {
      if (!arguments.length) return margin2;
      margin2 = _;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.height2 = function(_) {
      if (!arguments.length) return height2;
      height2 = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color =nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.interpolate = function(_) {
      if (!arguments.length) return lines.interpolate();
      lines.interpolate(_);
      lines2.interpolate(_);
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    // Chart has multiple similar Axes, to prevent code duplication, probably need to link all axis functions manually like below
    chart.xTickFormat = function(_) {
      if (!arguments.length) return xAxis.tickFormat();
      xAxis.tickFormat(_);
      x2Axis.tickFormat(_);
      return chart;
    };
  
    chart.yTickFormat = function(_) {
      if (!arguments.length) return yAxis.tickFormat();
      yAxis.tickFormat(_);
      y2Axis.tickFormat(_);
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.multiBar = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , x = d3.scale.ordinal()
      , y = d3.scale.linear()
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
      , clipEdge = true
      , stacked = false
      , color = nv.utils.defaultColor()
      , delay = 1200
      , xDomain
      , yDomain
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0 //used to store previous scales
        ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
        if (stacked)
          data = d3.layout.stack()
                   .offset('zero')
                   .values(function(d){ return d.values })
                   .y(getY)
                   (data);
  
  
        //add series index to each data point for reference
        data = data.map(function(series, i) {
          series.values = series.values.map(function(point) {
            point.series = i;
            return point;
          });
          return series;
        });
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        // remap and flatten the data for use in calculating the scales' domains
        var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
              data.map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: getX(d,i), y: getY(d,i), y0: d.y0 }
                })
              });
  
        x   .domain(d3.merge(seriesData).map(function(d) { return d.x }))
            .rangeBands([0, availableWidth], .1);
  
        y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y0 : 0) }).concat(forceY)))
            .range([availableHeight, 0]);
  
  
        // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
        if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
        if (x.domain()[0] === x.domain()[1])
          x.domain()[0] ?
              x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
            : x.domain([-1,1]);
  
        if (y.domain()[0] === y.domain()[1])
          y.domain()[0] ?
              y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
            : y.domain([-1,1]);
  
  
        x0 = x0 || x;
        y0 = y0 || y;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-multibar').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibar');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g')
  
        gEnter.append('g').attr('class', 'nv-groups');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-edge-clip-' + id)
          .append('rect');
        wrap.select('#nv-edge-clip-' + id + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');
  
  
  
        var groups = wrap.select('.nv-groups').selectAll('.nv-group')
            .data(function(d) { return d }, function(d) { return d.key });
        groups.enter().append('g')
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6);
        d3.transition(groups.exit())
            //.style('stroke-opacity', 1e-6)
            //.style('fill-opacity', 1e-6)
          .selectAll('rect.nv-bar')
          .delay(function(d,i) { return i * delay/ data[0].values.length })
            .attr('y', function(d) { return stacked ? y0(d.y0) : y0(0) })
            .attr('height', 0)
            .remove();
        groups
            .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
            .classed('hover', function(d) { return d.hover })
            .style('fill', function(d,i){ return color(d, i) })
            .style('stroke', function(d,i){ return color(d, i) });
        d3.transition(groups)
            .style('stroke-opacity', 1)
            .style('fill-opacity', .75);
  
  
        var bars = groups.selectAll('rect.nv-bar')
            .data(function(d) { return d.values });
  
        bars.exit().remove();
  
  
        var barsEnter = bars.enter().append('rect')
            .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
            .attr('x', function(d,i,j) {
                return stacked ? 0 : (j * x.rangeBand() / data.length )
            })
            .attr('y', function(d) { return y0(stacked ? d.y0 : 0) })
            .attr('height', 0)
            .attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
        bars
            .style('fill', function(d,i,j){ return color(d, j, i);  })
            .style('stroke', function(d,i,j){ return color(d, j, i); })
            .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
              d3.select(this).classed('hover', true);
              dispatch.elementMouseover({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('mouseout', function(d,i) {
              d3.select(this).classed('hover', false);
              dispatch.elementMouseout({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('click', function(d,i) {
              dispatch.elementClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            })
            .on('dblclick', function(d,i) {
              dispatch.elementDblClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            });
        bars
            .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
            .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',0)'; })
        if (stacked)
          d3.transition(bars)
              .delay(function(d,i) { return i * delay / data[0].values.length })
              .attr('y', function(d,i) {
                return y(getY(d,i) + (stacked ? d.y0 : 0));
              })
              .attr('height', function(d,i) {
                return Math.max(Math.abs(y(d.y + (stacked ? d.y0 : 0)) - y((stacked ? d.y0 : 0))),1);
              })
              .each('end', function() {
                d3.transition(d3.select(this))
                  .attr('x', function(d,i) {
                    return stacked ? 0 : (d.series * x.rangeBand() / data.length )
                  })
                  .attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
              })
        else
          d3.transition(bars)
            .delay(function(d,i) { return i * delay/ data[0].values.length })
              .attr('x', function(d,i) {
                return d.series * x.rangeBand() / data.length
              })
              .attr('width', x.rangeBand() / data.length)
              .each('end', function() {
                d3.transition(d3.select(this))
                  .attr('y', function(d,i) {
                    return getY(d,i) < 0 ?
                            y(0) :
                            y(0) - y(getY(d,i)) < 1 ?
                              y(0) - 1 :
                              y(getY(d,i))
                  })
                  .attr('height', function(d,i) {
                    return Math.max(Math.abs(y(getY(d,i)) - y(0)),1);
                  });
              })
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.stacked = function(_) {
      if (!arguments.length) return stacked;
      stacked = _;
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.delay = function(_) {
      if (!arguments.length) return delay;
      delay = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.multiBarChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var multibar = nv.models.multiBar()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , legend = nv.models.legend()
      , controls = nv.models.legend()
      ;
  
    var margin = {top: 30, right: 20, bottom: 30, left: 60}
      , width = null
      , height = null
      , color = nv.utils.defaultColor()
      , showControls = true
      , showLegend = true
      , reduceXTicks = true // if false a tick will show for every data point
      , rotateLabels = 0
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' on ' + x + '</p>'
        }
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , noData = "No Data Available."
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    multibar
      .stacked(false)
      ;
    xAxis
      .orient('bottom')
      .tickPadding(7)
      .highlightZero(false)
      .showMaxMin(false)
      .tickFormat(function(d) { return d })
      ;
    yAxis
      .orient('left')
      .tickFormat(d3.format(',.1f'))
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { selection.transition().call(chart) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display noData message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = multibar.xScale();
        y = multibar.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-multiBarWithLegend').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarWithLegend').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-barsWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width(availableWidth / 2);
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          var controlsData = [
            { key: 'Grouped', disabled: multibar.stacked() },
            { key: 'Stacked', disabled: !multibar.stacked() }
          ];
  
          controls.width(180).color(['#444', '#444', '#444']);
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .attr('transform', 'translate(0,' + (-margin.top) +')')
              .call(controls);
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        multibar
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }))
  
  
        var barsWrap = g.select('.nv-barsWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(barsWrap).call(multibar);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y.range()[0] + ')');
        d3.transition(g.select('.nv-x.nv-axis'))
            .call(xAxis);
  
        var xTicks = g.select('.nv-x.nv-axis > g').selectAll('g');
  
        xTicks
            .selectAll('line, text')
            .style('opacity', 1)
  
        if (reduceXTicks)
          xTicks
            .filter(function(d,i) {
                return i % Math.ceil(data[0].values.length / (availableWidth / 100)) !== 0;
              })
            .selectAll('text, line')
            .style('opacity', 0);
  
        if(rotateLabels)
          xTicks
              .selectAll('text')
              .attr('transform', function(d,i,j) { return 'rotate('+rotateLabels+' 0,0)' })
              .attr('text-transform', rotateLabels > 0 ? 'start' : 'end');
  
        g.select('.nv-x.nv-axis').selectAll('g.nv-axisMaxMin text')
            .style('opacity', 1);
  
        yAxis
          .scale(y)
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.nv-y.nv-axis'))
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart);
        });
  
        controls.dispatch.on('legendClick', function(d,i) {
          if (!d.disabled) return;
          controlsData = controlsData.map(function(s) {
            s.disabled = true;
            return s;
          });
          d.disabled = false;
  
          switch (d.key) {
            case 'Grouped':
              multibar.stacked(false);
              break;
            case 'Stacked':
              multibar.stacked(true);
              break;
          }
  
          selection.transition().call(chart);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode)
        });
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    multibar.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    multibar.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.multibar = multibar;
    chart.legend = legend;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, multibar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'clipEdge', 'id', 'stacked', 'delay');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.reduceXTicks= function(_) {
      if (!arguments.length) return reduceXTicks;
      reduceXTicks = _;
      return chart;
    };
  
    chart.rotateLabels = function(_) {
      if (!arguments.length) return rotateLabels;
      rotateLabels = _;
      return chart;
    }
  
    chart.tooltip = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.multiBarHorizontal = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , x = d3.scale.ordinal()
      , y = d3.scale.linear()
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
      , color = nv.utils.defaultColor()
      , stacked = false
      , showValues = false
      , valuePadding = 60
      , valueFormat = d3.format(',.2f')
      , delay = 1200
      , xDomain
      , yDomain
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0 //used to store previous scales
        ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
  
        if (stacked)
          data = d3.layout.stack()
                   .offset('zero')
                   .values(function(d){ return d.values })
                   .y(getY)
                   (data);
  
  
        //add series index to each data point for reference
        data = data.map(function(series, i) {
          series.values = series.values.map(function(point) {
            point.series = i;
            return point;
          });
          return series;
        });
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        // remap and flatten the data for use in calculating the scales' domains
        var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
              data.map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: getX(d,i), y: getY(d,i), y0: d.y0 }
                })
              });
  
        x   .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
            .rangeBands([0, availableHeight], .1);
  
        y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y0 : 0) }).concat(forceY)))
  
        if (showValues && !stacked)
          y.range([(y.domain()[0] < 0 ? valuePadding : 0), availableWidth - (y.domain()[1] > 0 ? valuePadding : 0) ]);
        else
          y.range([0, availableWidth]);
  
        x0 = x0 || x;
        y0 = y0 || d3.scale.linear().domain(y.domain()).range([y(0),y(0)]);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = d3.select(this).selectAll('g.nv-wrap.nv-multibarHorizontal').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibarHorizontal');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-groups');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
  
        var groups = wrap.select('.nv-groups').selectAll('.nv-group')
            .data(function(d) { return d }, function(d) { return d.key });
        groups.enter().append('g')
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6);
        d3.transition(groups.exit())
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6)
            .remove();
        groups
            .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
            .classed('hover', function(d) { return d.hover })
            .style('fill', function(d,i){ return color(d, i) })
            .style('stroke', function(d,i){ return color(d, i) });
        d3.transition(groups)
            .style('stroke-opacity', 1)
            .style('fill-opacity', .75);
  
  
        var bars = groups.selectAll('g.nv-bar')
            .data(function(d) { return d.values });
  
        bars.exit().remove();
  
  
        var barsEnter = bars.enter().append('g')
            .attr('transform', function(d,i,j) {
                return 'translate(' + y0(stacked ? d.y0 : 0) + ',' + (stacked ? 0 : (j * x.rangeBand() / data.length ) + x(getX(d,i))) + ')'
            });
  
        barsEnter.append('rect')
            .attr('width', 0)
            .attr('height', x.rangeBand() / (stacked ? 1 : data.length) )
  
        bars
            .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
              d3.select(this).classed('hover', true);
              dispatch.elementMouseover({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [ y(getY(d,i) + (stacked ? d.y0 : 0)), x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length) ],
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('mouseout', function(d,i) {
              d3.select(this).classed('hover', false);
              dispatch.elementMouseout({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
            })
            .on('click', function(d,i) {
              dispatch.elementClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            })
            .on('dblclick', function(d,i) {
              dispatch.elementDblClick({
                value: getY(d,i),
                point: d,
                series: data[d.series],
                pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: d.series,
                e: d3.event
              });
              d3.event.stopPropagation();
            });
  
        if (showValues && !stacked) {
          barsEnter.append('text')
              .attr('text-anchor', function(d,i) { return getY(d,i) < 0 ? 'end' : 'start' })
          bars.select('text')
              .attr('y', x.rangeBand() / 2)
              .attr('dy', '-.32em')
              .text(function(d,i) { return valueFormat(getY(d,i)) })
          d3.transition(bars)
              //.delay(function(d,i) { return i * delay / data[0].values.length })
            .select('text')
              .attr('x', function(d,i) { return getY(d,i) < 0 ? -4 : y(getY(d,i)) - y(0) + 4 })
        } else {
          bars.selectAll('text').remove();
        }
  
        bars
            .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
            //.attr('transform', function(d,i,j) {
                //return 'translate(' + y0(stacked ? d.y0 : 0) + ',' + x(getX(d,i)) + ')'
            //})
        if (stacked)
          d3.transition(bars)
              //.delay(function(d,i) { return i * delay / data[0].values.length })
              .attr('transform', function(d,i) {
                //return 'translate(' + y(d.y0) + ',0)'
                return 'translate(' + y(d.y0) + ',' + x(getX(d,i)) + ')'
              })
            .select('rect')
              .attr('width', function(d,i) {
                return Math.abs(y(getY(d,i) + d.y0) - y(d.y0))
              })
              .attr('height', x.rangeBand() );
        else
          d3.transition(bars)
            //.delay(function(d,i) { return i * delay / data[0].values.length })
              .attr('transform', function(d,i) {
                //TODO: stacked must be all positive or all negative, not both?
                return 'translate(' + 
                (getY(d,i) < 0 ? y(getY(d,i)) : y(0))
                + ',' +
                (d.series * x.rangeBand() / data.length
                +
                x(getX(d,i)) )
                + ')'
              })
            .select('rect')
              .attr('height', x.rangeBand() / data.length )
              .attr('width', function(d,i) {
                return Math.max(Math.abs(y(getY(d,i)) - y(0)),1)
              });
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.stacked = function(_) {
      if (!arguments.length) return stacked;
      stacked = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.delay = function(_) {
      if (!arguments.length) return delay;
      delay = _;
      return chart;
    };
  
    chart.showValues = function(_) {
      if (!arguments.length) return showValues;
      showValues = _;
      return chart;
    };
  
    chart.valueFormat= function(_) {
      if (!arguments.length) return valueFormat;
      valueFormat = _;
      return chart;
    };
  
    chart.valuePadding = function(_) {
      if (!arguments.length) return valuePadding;
      valuePadding = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.multiBarHorizontalChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var multibar = nv.models.multiBarHorizontal()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , legend = nv.models.legend().height(30)
      , controls = nv.models.legend().height(30)
      ;
  
    var margin = {top: 30, right: 20, bottom: 50, left: 60}
      , width = null
      , height = null
      , color = nv.utils.defaultColor()
      , showControls = true
      , showLegend = true
      , stacked = false
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + ' - ' + x + '</h3>' +
                 '<p>' +  y + '</p>'
        }
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , noData = 'No Data Available.'
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    multibar
      .stacked(stacked)
      ;
    xAxis
      .orient('left')
      .tickPadding(5)
      .highlightZero(false)
      .showMaxMin(false)
      .tickFormat(function(d) { return d })
      ;
    yAxis
      .orient('bottom')
      .tickFormat(d3.format(',.1f'))
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'e' : 'w', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { selection.transition().call(chart) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = multibar.xScale();
        y = multibar.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-multiBarHorizontalChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarHorizontalChart').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-barsWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width(availableWidth / 2);
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          var controlsData = [
            { key: 'Grouped', disabled: multibar.stacked() },
            { key: 'Stacked', disabled: !multibar.stacked() }
          ];
  
          controls.width(180).color(['#444', '#444', '#444']);
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .attr('transform', 'translate(0,' + (-margin.top) +')')
              .call(controls);
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        multibar
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }))
  
  
        var barsWrap = g.select('.nv-barsWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        d3.transition(barsWrap).call(multibar);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableHeight / 24 )
          .tickSize(-availableWidth, 0);
  
        d3.transition(g.select('.nv-x.nv-axis'))
            .call(xAxis);
  
        var xTicks = g.select('.nv-x.nv-axis').selectAll('g');
  
        xTicks
            .selectAll('line, text')
            .style('opacity', 1)
  
  
        yAxis
          .scale(y)
          .ticks( availableWidth / 100 )
          .tickSize( -availableHeight, 0);
  
        g.select('.nv-y.nv-axis')
            .attr('transform', 'translate(0,' + availableHeight + ')');
        d3.transition(g.select('.nv-y.nv-axis'))
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart);
        });
  
        controls.dispatch.on('legendClick', function(d,i) {
          if (!d.disabled) return;
          controlsData = controlsData.map(function(s) {
            s.disabled = true;
            return s;
          });
          d.disabled = false;
  
          switch (d.key) {
            case 'Grouped':
              multibar.stacked(false);
              break;
            case 'Stacked':
              multibar.stacked(true);
              break;
          }
  
          selection.transition().call(chart);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    multibar.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    multibar.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.multibar = multibar;
    chart.legend = legend;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, multibar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'clipEdge', 'id', 'delay', 'showValues', 'valueFormat', 'stacked');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltip = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  nv.models.multiChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 30, right: 20, bottom: 50, left: 60},
        color = d3.scale.category20().range(),
        width = null, 
        height = null,
        showLegend = true,
        tooltips = true,
        tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' at ' + x + '</p>'
        },
        x, y; //can be accessed via chart.lines.[x/y]Scale()
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x = d3.scale.linear(),
        yScale1 = d3.scale.linear(),
        yScale2 = d3.scale.linear(),
  
        lines1 = nv.models.line().yScale(yScale1),
        lines2 = nv.models.line().yScale(yScale2),
  
        bars1 = nv.models.multiBar().stacked(false).yScale(yScale1),
        bars2 = nv.models.multiBar().stacked(false).yScale(yScale2),
  
        stack1 = nv.models.stackedArea().yScale(yScale1),
        stack2 = nv.models.stackedArea().yScale(yScale2),
  
        xAxis = nv.models.axis().scale(x).orient('bottom').tickPadding(5),
        yAxis1 = nv.models.axis().scale(yScale1).orient('left'),
        yAxis2 = nv.models.axis().scale(yScale2).orient('right'),
  
        legend = nv.models.legend().height(30),
        dispatch = d3.dispatch('tooltipShow', 'tooltipHide');
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines1.x()(e.point, e.pointIndex)),
          y = (e.series.bar ? yAxis1 : yAxis2).tickFormat()(lines1.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, undefined, undefined, offsetElement.offsetParent);
    };
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        var dataLines1 = data.filter(function(d) {return !d.disabled && d.type == 'line' && d.yAxis == 1})
        var dataLines2 = data.filter(function(d) {return !d.disabled && d.type == 'line' && d.yAxis == 2})
        var dataBars1 = data.filter(function(d) {return !d.disabled && d.type == 'bar' && d.yAxis == 1})
        var dataBars2 = data.filter(function(d) {return !d.disabled && d.type == 'bar' && d.yAxis == 2})
        var dataStack1 = data.filter(function(d) {return !d.disabled && d.type == 'area' && d.yAxis == 1})
        var dataStack2 = data.filter(function(d) {return !d.disabled && d.type == 'area' && d.yAxis == 2})
  
        var series1 = data.filter(function(d) {return !d.disabled && d.yAxis == 1})
              .map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: d.x, y: d.y }
                })
              })
  
        var series2 = data.filter(function(d) {return !d.disabled && d.yAxis == 2})
              .map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: d.x, y: d.y }
                })
              })
  
        x   .domain(d3.extent(d3.merge(series1.concat(series2)), function(d) { return d.x } ))
            .range([0, availableWidth]);
  
        var wrap = container.selectAll('g.wrap.multiChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 multiChart').append('g');
  
        gEnter.append('g').attr('class', 'x axis');
        gEnter.append('g').attr('class', 'y1 axis');
        gEnter.append('g').attr('class', 'y2 axis');
        gEnter.append('g').attr('class', 'lines1Wrap');
        gEnter.append('g').attr('class', 'lines2Wrap');
        gEnter.append('g').attr('class', 'bars1Wrap');
        gEnter.append('g').attr('class', 'bars2Wrap');
        gEnter.append('g').attr('class', 'stack1Wrap');
        gEnter.append('g').attr('class', 'stack2Wrap');
        gEnter.append('g').attr('class', 'legendWrap');
  
        var g = wrap.select('g');
  
        if (showLegend) {
          legend.width( availableWidth / 2 );
  
          g.select('.legendWrap')
              .datum(data.map(function(series) { 
                series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
                series.key = series.originalKey + (series.yAxis == 1 ? '' : ' (right axis)');
                return series;
              }))
            .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.legendWrap')
              .attr('transform', 'translate(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
        }
  
  
        lines1
          .width(availableWidth)
          .height(availableHeight)
          .interpolate("monotone")
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'line'}));
  
        lines2
          .width(availableWidth)
          .height(availableHeight)
          .interpolate("monotone")
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'line'}));
  
        bars1
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'bar'}));
  
        bars2
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'bar'}));
  
        stack1
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'area'}));
  
        stack2
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color[i % color.length];
          }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'area'}));
  
        g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        var lines1Wrap = g.select('.lines1Wrap')
            .datum(dataLines1)
        var bars1Wrap = g.select('.bars1Wrap')
            .datum(dataBars1)
        var stack1Wrap = g.select('.stack1Wrap')
            .datum(dataStack1)
  
        var lines2Wrap = g.select('.lines2Wrap')
            .datum(dataLines2)
        var bars2Wrap = g.select('.bars2Wrap')
            .datum(dataBars2)
        var stack2Wrap = g.select('.stack2Wrap')
            .datum(dataStack2)
  
        var extraValue1 = dataStack1.length ? dataStack1.map(function(a){return a.values}).reduce(function(a,b){
          return a.map(function(aVal,i){return {x: aVal.x, y: aVal.y + b[i].y}})
        }).concat([{x:0, y:0}]) : []
        var extraValue2 = dataStack2.length ? dataStack2.map(function(a){return a.values}).reduce(function(a,b){
          return a.map(function(aVal,i){return {x: aVal.x, y: aVal.y + b[i].y}})
        }).concat([{x:0, y:0}]) : []
  
        yScale1 .domain(d3.extent(d3.merge(series1).concat(extraValue1), function(d) { return d.y } ))
                .range([0, availableHeight])
  
        yScale2 .domain(d3.extent(d3.merge(series2).concat(extraValue2), function(d) { return d.y } ))
                .range([0, availableHeight])
  
        lines1.yDomain(yScale1.domain())
        bars1.yDomain(yScale1.domain())
        stack1.yDomain(yScale1.domain())
  
        lines2.yDomain(yScale2.domain())
        bars2.yDomain(yScale2.domain())
        stack2.yDomain(yScale2.domain())
  
        if(dataStack1.length){d3.transition(stack1Wrap).call(stack1);}
        if(dataStack2.length){d3.transition(stack2Wrap).call(stack2);}
  
        if(dataBars1.length){d3.transition(bars1Wrap).call(bars1);}
        if(dataBars2.length){d3.transition(bars2Wrap).call(bars2);}
  
        if(dataLines1.length){d3.transition(lines1Wrap).call(lines1);}
        if(dataLines2.length){d3.transition(lines2Wrap).call(lines2);}
        
  
  
        xAxis
          .ticks( availableWidth / 100 )
          .tickSize(-availableHeight, 0);
  
        g.select('.x.axis')
            .attr('transform', 'translate(0,' + availableHeight + ')');
        d3.transition(g.select('.x.axis'))
            .call(xAxis);
  
        yAxis1
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
  
        d3.transition(g.select('.y1.axis'))
            .call(yAxis1);
  
        yAxis2
          .ticks( availableHeight / 36 )
          .tickSize( -availableWidth, 0);
  
        d3.transition(g.select('.y2.axis'))
            .call(yAxis2);
  
        g.select('.y2.axis')
            .style('opacity', series2.length ? 1 : 0)
            .attr('transform', 'translate(' + x.range()[1] + ',0)');
  
        legend.dispatch.on('legendClick', function(d,i) { 
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.series').classed('disabled', false);
              return d;
            });
          }
          selection.transition().call(chart);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
      });
  
      chart.update = function() { chart(selection) };
      chart.container = this;
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    lines1.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines1.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    lines2.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines2.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    bars1.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    bars1.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    bars2.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    bars2.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    stack1.dispatch.on('tooltipShow', function(e) {
      //disable tooltips when value ~= 0
      //// TODO: consider removing points from voronoi that have 0 value instead of this hack
      if (!Math.round(stack1.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
        setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
        return false;
      }
  
      e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
      dispatch.tooltipShow(e);
    });
  
    stack1.dispatch.on('tooltipHide', function(e) {
      dispatch.tooltipHide(e);
    });
  
    stack2.dispatch.on('tooltipShow', function(e) {
      //disable tooltips when value ~= 0
      //// TODO: consider removing points from voronoi that have 0 value instead of this hack
      if (!Math.round(stack2.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
        setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
        return false;
      }
  
      e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
      dispatch.tooltipShow(e);
    });
  
    stack2.dispatch.on('tooltipHide', function(e) {
      dispatch.tooltipHide(e);
    });
  
      lines1.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines1.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    lines2.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    lines2.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
  
  
    //============================================================
    // Global getters and setters
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
    chart.lines1 = lines1;
    chart.lines2 = lines2;
    chart.bars1 = bars1;
    chart.bars2 = bars2;
    chart.stack1 = stack1;
    chart.stack2 = stack2;
    chart.xAxis = xAxis;
    chart.yAxis1 = yAxis1;
    chart.yAxis2 = yAxis2;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      lines1.x(_);
      bars1.x(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      lines1.y(_);
      bars1.y(_);
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin = _;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = _;
      legend.color(_);
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    return chart;
  }
  
  
  nv.models.ohlcBar = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , x = d3.scale.linear()
      , y = d3.scale.linear()
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , getOpen = function(d) { return d.open }
      , getClose = function(d) { return d.close }
      , getHigh = function(d) { return d.high }
      , getLow = function(d) { return d.low }
      , forceX = []
      , forceY = []
      , padData     = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart
      , clipEdge = true
      , color = nv.utils.defaultColor()
      , xDomain
      , yDomain
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    //TODO: store old scales for transitions
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x   .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) ));
  
        if (padData)
          x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
        else
          x.range([0, availableWidth]);
  
        y   .domain(yDomain || [
              d3.min(data[0].values.map(getLow).concat(forceY)),
              d3.max(data[0].values.map(getHigh).concat(forceY))
            ])
            .range([availableHeight, 0]);
  
        // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
        if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
        if (x.domain()[0] === x.domain()[1])
          x.domain()[0] ?
              x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
            : x.domain([-1,1]);
  
        if (y.domain()[0] === y.domain()[1])
          y.domain()[0] ?
              y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
            : y.domain([-1,1]);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = d3.select(this).selectAll('g.nv-wrap.nv-ohlcBar').data([data[0].values]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-ohlcBar');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-ticks');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        container
            .on('click', function(d,i) {
              dispatch.chartClick({
                  data: d,
                  index: i,
                  pos: d3.event,
                  id: id
              });
            });
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-chart-clip-path-' + id)
          .append('rect');
  
        wrap.select('#nv-chart-clip-path-' + id + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-chart-clip-path-' + id + ')' : '');
  
  
  
        var ticks = wrap.select('.nv-ticks').selectAll('.nv-tick')
            .data(function(d) { return d });
  
        ticks.exit().remove();
  
  
        var ticksEnter = ticks.enter().append('path')
            .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i })
            .attr('d', function(d,i) {
              var w = (availableWidth / data[0].values.length) * .9;
              return 'm0,0l0,'
                   + (y(getOpen(d,i))
                   - y(getHigh(d,i)))
                   + 'l'
                   + (-w/2)
                   + ',0l'
                   + (w/2)
                   + ',0l0,'
                   + (y(getLow(d,i)) - y(getOpen(d,i)))
                   + 'l0,'
                   + (y(getClose(d,i))
                   - y(getLow(d,i)))
                   + 'l'
                   + (w/2)
                   + ',0l'
                   + (-w/2)
                   + ',0z';
            })
            .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; })
            //.attr('fill', function(d,i) { return color[0]; })
            //.attr('stroke', function(d,i) { return color[0]; })
            //.attr('x', 0 )
            //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
            //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) })
            .on('mouseover', function(d,i) {
              d3.select(this).classed('hover', true);
              dispatch.elementMouseover({
                  point: d,
                  series: data[0],
                  pos: [x(getX(d,i)), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                  pointIndex: i,
                  seriesIndex: 0,
                  e: d3.event
              });
  
            })
            .on('mouseout', function(d,i) {
                  d3.select(this).classed('hover', false);
                  dispatch.elementMouseout({
                      point: d,
                      series: data[0],
                      pointIndex: i,
                      seriesIndex: 0,
                      e: d3.event
                  });
            })
            .on('click', function(d,i) {
                  dispatch.elementClick({
                      //label: d[label],
                      value: getY(d,i),
                      data: d,
                      index: i,
                      pos: [x(getX(d,i)), y(getY(d,i))],
                      e: d3.event,
                      id: id
                  });
                d3.event.stopPropagation();
            })
            .on('dblclick', function(d,i) {
                dispatch.elementDblClick({
                    //label: d[label],
                    value: getY(d,i),
                    data: d,
                    index: i,
                    pos: [x(getX(d,i)), y(getY(d,i))],
                    e: d3.event,
                    id: id
                });
                d3.event.stopPropagation();
            });
  
        ticks
            .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i })
        d3.transition(ticks)
            .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; })
            .attr('d', function(d,i) {
              var w = (availableWidth / data[0].values.length) * .9;
              return 'm0,0l0,'
                   + (y(getOpen(d,i))
                   - y(getHigh(d,i)))
                   + 'l'
                   + (-w/2)
                   + ',0l'
                   + (w/2)
                   + ',0l0,'
                   + (y(getLow(d,i))
                   - y(getOpen(d,i)))
                   + 'l0,'
                   + (y(getClose(d,i))
                   - y(getLow(d,i)))
                   + 'l'
                   + (w/2)
                   + ',0l'
                   + (-w/2)
                   + ',0z';
            })
            //.attr('width', (availableWidth / data[0].values.length) * .9 )
  
  
        //d3.transition(ticks)
            //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
            //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) });
            //.order();  // not sure if this makes any sense for this model
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = _;
      return chart;
    };
  
    chart.open = function(_) {
      if (!arguments.length) return getOpen;
      getOpen = _;
      return chart;
    };
  
    chart.close = function(_) {
      if (!arguments.length) return getClose;
      getClose = _;
      return chart;
    };
  
    chart.high = function(_) {
      if (!arguments.length) return getHigh;
      getHigh = _;
      return chart;
    };
  
    chart.low = function(_) {
      if (!arguments.length) return getLow;
      getLow = _;
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.forceX = function(_) {
      if (!arguments.length) return forceX;
      forceX = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.padData = function(_) {
      if (!arguments.length) return padData;
      padData = _;
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.pie = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 500
      , height = 500
      , getValues = function(d) { return d.values }
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , color = nv.utils.defaultColor()
      , valueFormat = d3.format(',.2f')
      , showLabels = true
      , donutLabelsOutside = false
      , labelThreshold = .02 //if slice percentage is under this, don't show label
      , donut = false
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            radius = Math.min(availableWidth, availableHeight) / 2,
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        //var wrap = container.selectAll('.nv-wrap.nv-pie').data([data]);
        var wrap = container.selectAll('.nv-wrap.nv-pie').data([getValues(data[0])]);
        var wrapEnter = wrap.enter().append('g').attr('class','nvd3 nv-wrap nv-pie nv-chart-' + id);
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-pie');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
        g.select('.nv-pie').attr('transform', 'translate(' + availableWidth / 2 + ',' + availableHeight / 2 + ')');
  
        //------------------------------------------------------------
  
  
        container
            .on('click', function(d,i) {
                dispatch.chartClick({
                    data: d,
                    index: i,
                    pos: d3.event,
                    id: id
                });
            });
  
  
        var arc = d3.svg.arc()
                    .outerRadius((radius-(radius / 5)));
  
        if (donut) arc.innerRadius(radius / 2);
  
  
        // Setup the Pie chart and choose the data element
        var pie = d3.layout.pie()
            .sort(null)
            .value(function(d) { return d.disabled ? 0 : getY(d) });
  
        var slices = wrap.select('.nv-pie').selectAll('.nv-slice')
            .data(pie);
  
        slices.exit().remove();
  
        var ae = slices.enter().append('g')
                .attr('class', 'nv-slice')
                .on('mouseover', function(d,i){
                  d3.select(this).classed('hover', true);
                  dispatch.elementMouseover({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      pointIndex: i,
                      pos: [d3.event.pageX, d3.event.pageY],
                      id: id
                  });
                })
                .on('mouseout', function(d,i){
                  d3.select(this).classed('hover', false);
                  dispatch.elementMouseout({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      id: id
                  });
                })
                .on('click', function(d,i) {
                  dispatch.elementClick({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      pos: d3.event,
                      id: id
                  });
                  d3.event.stopPropagation();
                })
                .on('dblclick', function(d,i) {
                  dispatch.elementDblClick({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      pos: d3.event,
                      id: id
                  });
                  d3.event.stopPropagation();
                });
  
          slices
              .attr('fill', function(d,i) { return color(d, i); })
              .attr('stroke', function(d,i) { return color(d, i); });
  
          var paths = ae.append('path')
              .each(function(d) { this._current = d; });
              //.attr('d', arc);
  
          d3.transition(slices.select('path'))
              .attr('d', arc)
              .attrTween('d', arcTween);
  
          if (showLabels) {
            // This does the normal label
            var labelsArc = arc;
            if (donutLabelsOutside) {
              labelsArc = d3.svg.arc().outerRadius(arc.outerRadius())
            }
  
            ae.append("g").classed("nv-label", true)
              .each(function(d, i) {
                var group = d3.select(this);
  
                group
                  .attr('transform', function(d) {
                     d.outerRadius = radius + 10; // Set Outer Coordinate
                     d.innerRadius = radius + 15; // Set Inner Coordinate
                     return 'translate(' + labelsArc.centroid(d) + ')'
                  });
  
                group.append('rect')
                    .style('stroke', '#fff')
                    .style('fill', '#fff')
                    .attr("rx", 3)
                    .attr("ry", 3);
  
                group.append('text')
                    .style('text-anchor', 'middle') //center the text on it's origin
                    .style('fill', '#000')
  
  
            });
  
            slices.select(".nv-label").transition()
              .attr('transform', function(d) {
                  d.outerRadius = radius + 10; // Set Outer Coordinate
                  d.innerRadius = radius + 15; // Set Inner Coordinate
                  return 'translate(' + labelsArc.centroid(d) + ')';
              });
  
            slices.each(function(d, i) {
              var slice = d3.select(this);
  
              slice
                .select(".nv-label text")
                  .text(function(d, i) {
                    var percent = (d.endAngle - d.startAngle) / (2 * Math.PI);
                    return (d.value && percent > labelThreshold) ? getX(d.data) : '';
                  });
  
              var textBox = slice.select('text').node().getBBox();
              slice.select(".nv-label rect")
                .attr("width", textBox.width + 10)
                .attr("height", textBox.height + 10)
                .attr("transform", function() {
                  return "translate(" + [textBox.x - 5, textBox.y - 5] + ")";
                });
            });
          }
  
  
          // Computes the angle of an arc, converting from radians to degrees.
          function angle(d) {
            var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
            return a > 90 ? a - 180 : a;
          }
  
          function arcTween(a) {
            if (!donut) a.innerRadius = 0;
            var i = d3.interpolate(this._current, a);
            this._current = i(0);
            return function(t) {
              return arc(i(t));
            };
          }
  
          function tweenPie(b) {
            b.innerRadius = 0;
            var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
            return function(t) {
                return arc(i(t));
            };
          }
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.values = function(_) {
      if (!arguments.length) return getValues;
      getValues = _;
      return chart;
    };
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = d3.functor(_);
      return chart;
    };
  
    chart.showLabels = function(_) {
      if (!arguments.length) return showLabels;
      showLabels = _;
      return chart;
    };
  
    chart.donutLabelsOutside = function(_) {
      if (!arguments.length) return donutLabelsOutside;
      donutLabelsOutside = _;
      return chart;
    };
  
    chart.donut = function(_) {
      if (!arguments.length) return donut;
      donut = _;
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.valueFormat = function(_) {
      if (!arguments.length) return valueFormat;
      valueFormat = _;
      return chart;
    };
  
    chart.labelThreshold = function(_) {
      if (!arguments.length) return labelThreshold;
      labelThreshold = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.pieChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var pie = nv.models.pie()
      , legend = nv.models.legend()
      ;
  
    var margin = {top: 30, right: 20, bottom: 20, left: 20}
      , width = null
      , height = null
      , showLegend = true
      , color = nv.utils.defaultColor()
      , tooltips = true
      , tooltip = function(key, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + '</p>'
        }
      , noData = "No Data Available."
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( (offsetElement && offsetElement.offsetLeft) || 0 ),
          top = e.pos[1] + ( (offsetElement && offsetElement.offsetTop) || 0),
          y = pie.valueFormat()(pie.y()(e.point)),
          content = tooltip(pie.x()(e.point), y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { chart(selection); };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-pieChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-pieChart').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-pieWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend
            .width( availableWidth )
            .key(pie.x());
  
          wrap.select('.nv-legendWrap')
              .datum(pie.values()(data[0]))
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          wrap.select('.nv-legendWrap')
              .attr('transform', 'translate(0,' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        pie
          .width(availableWidth)
          .height(availableHeight);
  
  
        var pieWrap = g.select('.nv-pieWrap')
            .datum(data);
  
        d3.transition(pieWrap).call(pie);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        legend.dispatch.on('legendClick', function(d,i, that) {
          d.disabled = !d.disabled;
  
          if (!pie.values()(data[0]).filter(function(d) { return !d.disabled }).length) {
            pie.values()(data[0]).map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          selection.transition().call(chart)
        });
  
        pie.dispatch.on('elementMouseout.tooltip', function(e) {
          dispatch.tooltipHide(e);
        });
  
        //============================================================
  
  
      });
  
      return chart;
    }
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    pie.dispatch.on('elementMouseover.tooltip', function(e) {
      e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
      dispatch.tooltipShow(e);
    });
  
    dispatch.on('tooltipShow', function(e) {
      if (tooltips) showTooltip(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.legend = legend;
    chart.dispatch = dispatch;
    chart.pie = pie;
  
    d3.rebind(chart, pie, 'valueFormat', 'values', 'x', 'y', 'id', 'showLabels', 'donutLabelsOutside', 'donut', 'labelThreshold');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      pie.color(color);
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.scatter = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin      = {top: 0, right: 0, bottom: 0, left: 0}
      , width       = 960
      , height      = 500
      , color       = nv.utils.defaultColor() // chooses color
      , id          = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't selet one
      , x           = d3.scale.linear()
      , y           = d3.scale.linear()
      , z           = d3.scale.linear() //linear because d3.svg.shape.size is treated as area
      , getX        = function(d) { return d.x } // accessor to get the x value
      , getY        = function(d) { return d.y } // accessor to get the y value
      , getSize     = function(d) { return d.size || 1} // accessor to get the point size
      , getShape    = function(d) { return d.shape || 'circle' } // accessor to get point shape
      , onlyCircles = true // Set to false to use shapes
      , forceX      = [] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
      , forceY      = [] // List of numbers to Force into the Y scale
      , forceSize   = [] // List of numbers to Force into the Size scale
      , interactive = true // If true, plots a voronoi overlay for advanced point interection
      , pointActive = function(d) { return !d.notActive } // any points that return false will be filtered out
      , padData     = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart
      , clipEdge    = false // if true, masks points within x and y scale
      , clipVoronoi = true // if true, masks each point with a circle... can turn off to slightly increase performance
      , clipRadius  = function() { return 25 } // function to get the radius for voronoi point clips
      , xDomain     = null // Override x domain (skips the calculation from data)
      , yDomain     = null // Override y domain
      , sizeDomain  = null // Override point size domain
      , sizeRange   = null
      , singlePoint = false
      , dispatch    = d3.dispatch('elementClick', 'elementMouseover', 'elementMouseout')
      , useVoronoi  = true
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0, z0 // used to store previous scales
      , timeoutID
      , needsUpdate = false // Flag for when the points are visually updating, but the interactive layer is behind, to disable tooltips
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
        //add series index to each data point for reference
        data = data.map(function(series, i) {
          series.values = series.values.map(function(point) {
            point.series = i;
            return point;
          });
          return series;
        });
  
        //------------------------------------------------------------
        // Setup Scales
  
        // remap and flatten the data for use in calculating the scales' domains
        var seriesData = (xDomain && yDomain && sizeDomain) ? [] : // if we know xDomain and yDomain and sizeDomain, no need to calculate.... if Size is constant remember to set sizeDomain to speed up performance
              d3.merge(
                data.map(function(d) {
                  return d.values.map(function(d,i) {
                    return { x: getX(d,i), y: getY(d,i), size: getSize(d,i) }
                  })
                })
              );
  
        x   .domain(xDomain || d3.extent(seriesData.map(function(d) { return d.x }).concat(forceX)))
  
        if (padData)
          x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
        else
          x.range([0, availableWidth]);
  
        y   .domain(yDomain || d3.extent(seriesData.map(function(d) { return d.y }).concat(forceY)))
            .range([availableHeight, 0]);
  
        z   .domain(sizeDomain || d3.extent(seriesData.map(function(d) { return d.size }).concat(forceSize)))
            .range(sizeRange || [16, 256]);
  
        // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
        if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
        if (x.domain()[0] === x.domain()[1])
          x.domain()[0] ?
              x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
            : x.domain([-1,1]);
  
        if (y.domain()[0] === y.domain()[1])
          y.domain()[0] ?
              y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
            : y.domain([-1,1]);
  
  
        x0 = x0 || x;
        y0 = y0 || y;
        z0 = z0 || z;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-scatter').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatter nv-chart-' + id + (singlePoint ? ' nv-single-point' : ''));
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-groups');
        gEnter.append('g').attr('class', 'nv-point-paths');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-edge-clip-' + id)
          .append('rect');
  
        wrap.select('#nv-edge-clip-' + id + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');
  
  
        function updateInteractiveLayer() {
  
          if (!interactive) return false;
  
          var eventElements;
  
          var vertices = d3.merge(data.map(function(group, groupIndex) {
              return group.values
                .map(function(point, pointIndex) {
                  // *Adding noise to make duplicates very unlikely
                  // **Injecting series and point index for reference
                  return [x(getX(point,pointIndex)) * (Math.random() / 1e12 + 1)  , y(getY(point,pointIndex)) * (Math.random() / 1e12 + 1), groupIndex, pointIndex, point]; //temp hack to add noise untill I think of a better way so there are no duplicates
                })
                .filter(function(pointArray, pointIndex) {
                  return pointActive(pointArray[4], pointIndex); // Issue #237.. move filter to after map, so pointIndex is correct!
                })
            })
          );
  
  
  
          //inject series and point index for reference into voronoi
          if (useVoronoi === true) {
  
            if (clipVoronoi) {
              var pointClipsEnter = wrap.select('defs').selectAll('.nv-point-clips')
                  .data([id])
                .enter();
  
              pointClipsEnter.append('clipPath')
                    .attr('class', 'nv-point-clips')
                    .attr('id', 'nv-points-clip-' + id);
  
              var pointClips = wrap.select('#nv-points-clip-' + id).selectAll('circle')
                  .data(vertices);
              pointClips.enter().append('circle')
                  .attr('r', clipRadius);
              pointClips.exit().remove();
              pointClips
                  .attr('cx', function(d) { return d[0] })
                  .attr('cy', function(d) { return d[1] });
  
              wrap.select('.nv-point-paths')
                  .attr('clip-path', 'url(#nv-points-clip-' + id + ')');
            }
  
  
            if(vertices.length < 3) {
              // Issue #283 - Adding 2 dummy points to the voronoi b/c voronoi requires min 3 points to work
              vertices.push([x.range()[0] - 2000, y.range()[0] - 2000, null, null]);
              vertices.push([x.range()[1] + 2000, y.range()[1] + 2000, null, null]);
              vertices.push([x.range()[0] - 2000, y.range()[0] + 2000, null, null]);
              vertices.push([x.range()[1] + 2000, y.range()[1] - 2000, null, null]);
            }
  
            var bounds = d3.geom.polygon([
                [-10,-10],
                [-10,height + 10],
                [width + 10,height + 10],
                [width + 10,-10]
            ]);
  
            var voronoi = d3.geom.voronoi(vertices).map(function(d, i) {
                return {
                  'data': bounds.clip(d),
                  'series': vertices[i][2],
                  'point': vertices[i][3]
                }
              });
  
  
  
            var pointPaths = wrap.select('.nv-point-paths').selectAll('path')
                .data(voronoi);
            pointPaths.enter().append('path')
                .attr('class', function(d,i) { return 'nv-path-'+i; });
            pointPaths.exit().remove();
            pointPaths
                .attr('d', function(d) { return 'M' + d.data.join('L') + 'Z'; });
  
            pointPaths
                .on('click', function(d) {
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[d.point];
  
                  dispatch.elementClick({
                    point: point,
                    series: series,
                    pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
                    seriesIndex: d.series,
                    pointIndex: d.point
                  });
                })
                .on('mouseover', function(d) {
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[d.point];
  
                  dispatch.elementMouseover({
                    point: point,
                    series: series,
                    pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
                    seriesIndex: d.series,
                    pointIndex: d.point
                  });
                })
                .on('mouseout', function(d, i) {
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[d.point];
  
                  dispatch.elementMouseout({
                    point: point,
                    series: series,
                    seriesIndex: d.series,
                    pointIndex: d.point
                  });
                });
  
  
          } else {
            /*
            // bring data in form needed for click handlers
            var dataWithPoints = vertices.map(function(d, i) {
                return {
                  'data': d,
                  'series': vertices[i][2],
                  'point': vertices[i][3]
                }
              });
             */
  
            // add event handlers to points instead voronoi paths
            wrap.select('.nv-groups').selectAll('.nv-group')
              .selectAll('.nv-point')
                //.data(dataWithPoints)
                //.style('pointer-events', 'auto') // recativate events, disabled by css
                .on('click', function(d,i) { 
                  //nv.log('test', d, i);
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[i];
  
                  dispatch.elementClick({
                    point: point,
                    series: series,
                    pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
                    seriesIndex: d.series,
                    pointIndex: i
                  });
                })
                .on('mouseover', function(d,i) {
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[i];
  
                  dispatch.elementMouseover({
                    point: point,
                    series: series,
                    pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
                    seriesIndex: d.series,
                    pointIndex: i
                  });
                })
                .on('mouseout', function(d,i) {
                  if (needsUpdate) return 0;
                  var series = data[d.series],
                      point  = series.values[i];
  
                  dispatch.elementMouseout({
                    point: point,
                    series: series,
                    seriesIndex: d.series,
                    pointIndex: i
                  });
                });
            }
  
            needsUpdate = false;
        }
  
        needsUpdate = true;
  
        var groups = wrap.select('.nv-groups').selectAll('.nv-group')
            .data(function(d) { return d }, function(d) { return d.key });
        groups.enter().append('g')
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6);
        d3.transition(groups.exit())
            .style('stroke-opacity', 1e-6)
            .style('fill-opacity', 1e-6)
            .remove();
        groups
            .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
            .classed('hover', function(d) { return d.hover });
        d3.transition(groups)
            .style('fill', function(d,i) { return color(d, i) })
            .style('stroke', function(d,i) { return color(d, i) })
            .style('stroke-opacity', 1)
            .style('fill-opacity', .5);
  
  
        if (onlyCircles) {
  
          var points = groups.selectAll('circle.nv-point')
              .data(function(d) { return d.values });
          points.enter().append('circle')
              .attr('cx', function(d,i) { return x0(getX(d,i)) })
              .attr('cy', function(d,i) { return y0(getY(d,i)) })
              .attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });
          points.exit().remove();
          d3.transition(groups.exit().selectAll('path.nv-point'))
              .attr('cx', function(d,i) { return x(getX(d,i)) })
              .attr('cy', function(d,i) { return y(getY(d,i)) })
              .remove();
          points.attr('class', function(d,i) { return 'nv-point nv-point-' + i });
          d3.transition(points)
              .attr('cx', function(d,i) { return x(getX(d,i)) })
              .attr('cy', function(d,i) { return y(getY(d,i)) })
              .attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });
  
        } else {
  
          var points = groups.selectAll('path.nv-point')
              .data(function(d) { return d.values });
          points.enter().append('path')
              .attr('transform', function(d,i) {
                return 'translate(' + x0(getX(d,i)) + ',' + y0(getY(d,i)) + ')'
              })
              .attr('d',
                d3.svg.symbol()
                  .type(getShape)
                  .size(function(d,i) { return z(getSize(d,i)) })
              );
          points.exit().remove();
          d3.transition(groups.exit().selectAll('path.nv-point'))
              .attr('transform', function(d,i) {
                return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
              })
              .remove();
          points.attr('class', function(d,i) { return 'nv-point nv-point-' + i });
          d3.transition(points)
              .attr('transform', function(d,i) {
                //nv.log(d,i,getX(d,i), x(getX(d,i)));
                return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
              })
              .attr('d',
                d3.svg.symbol()
                  .type(getShape)
                  .size(function(d,i) { return z(getSize(d,i)) })
              );
        }
  
  
        // Delay updating the invisible interactive layer for smoother animation
        clearTimeout(timeoutID); // stop repeat calls to updateInteractiveLayer
        timeoutID = setTimeout(updateInteractiveLayer, 300);
        //updateInteractiveLayer();
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
        z0 = z.copy();
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    dispatch.on('elementMouseover.point', function(d) {
      if (interactive)
        d3.select('.nv-chart-' + id + ' .nv-series-' + d.seriesIndex + ' .nv-point-' + d.pointIndex)
            .classed('hover', true);
    });
  
    dispatch.on('elementMouseout.point', function(d) {
      if (interactive)
        d3.select('.nv-chart-' + id + ' .nv-series-' + d.seriesIndex + ' .nv-point-' + d.pointIndex)
            .classed('hover', false);
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = d3.functor(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = d3.functor(_);
      return chart;
    };
  
    chart.size = function(_) {
      if (!arguments.length) return getSize;
      getSize = d3.functor(_);
      return chart;
    };
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.zScale = function(_) {
      if (!arguments.length) return z;
      z = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.sizeDomain = function(_) {
      if (!arguments.length) return sizeDomain;
      sizeDomain = _;
      return chart;
    };
  
    chart.sizeRange = function(_) {
      if (!arguments.length) return sizeRange;
      sizeRange = _;
      return chart;
    };
  
    chart.forceX = function(_) {
      if (!arguments.length) return forceX;
      forceX = _;
      return chart;
    };
  
    chart.forceY = function(_) {
      if (!arguments.length) return forceY;
      forceY = _;
      return chart;
    };
  
    chart.forceSize = function(_) {
      if (!arguments.length) return forceSize;
      forceSize = _;
      return chart;
    };
  
    chart.interactive = function(_) {
      if (!arguments.length) return interactive;
      interactive = _;
      return chart;
    };
  
    chart.pointActive = function(_) {
      if (!arguments.length) return pointActive;
      pointActive = _;
      return chart;
    };
  
    chart.padData = function(_) {
      if (!arguments.length) return padData;
      padData = _;
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.clipVoronoi= function(_) {
      if (!arguments.length) return clipVoronoi;
      clipVoronoi = _;
      return chart;
    };
  
    chart.useVoronoi= function(_) {
      if (!arguments.length) return useVoronoi;
      useVoronoi = _;
      if (useVoronoi === false) {
          clipVoronoi = false;
      }
      return chart;
    };
  
    chart.clipRadius = function(_) {
      if (!arguments.length) return clipRadius;
      clipRadius = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.shape = function(_) {
      if (!arguments.length) return getShape;
      getShape = _;
      return chart;
    };
  
    chart.onlyCircles = function(_) {
      if (!arguments.length) return onlyCircles;
      onlyCircles = _;
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.singlePoint = function(_) {
      if (!arguments.length) return singlePoint;
      singlePoint = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.scatterChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var scatter      = nv.models.scatter()
      , xAxis        = nv.models.axis()
      , yAxis        = nv.models.axis()
      , legend       = nv.models.legend()
      , controls     = nv.models.legend()
      , distX        = nv.models.distribution()
      , distY        = nv.models.distribution()
      ;
  
    var margin       = {top: 30, right: 20, bottom: 50, left: 75}
      , width        = null
      , height       = null
      , color        = nv.utils.defaultColor()
      , x            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.xScale()
      , y            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.yScale()
      , xPadding     = 0
      , yPadding     = 0
      , showDistX    = false
      , showDistY    = false
      , showLegend   = true
      , showControls = !!d3.fisheye
      , fisheye      = 0
      , pauseFisheye = false
      , tooltips     = true
      , tooltipX     = function(key, x, y) { return '<strong>' + x + '</strong>' }
      , tooltipY     = function(key, x, y) { return '<strong>' + y + '</strong>' }
      //, tooltip      = function(key, x, y) { return '<h3>' + key + '</h3>' }
      , tooltip      = null
      , dispatch     = d3.dispatch('tooltipShow', 'tooltipHide')
      , noData       = "No Data Available."
      ;
  
    scatter
      .xScale(x)
      .yScale(y)
      ;
    xAxis
      .orient('bottom')
      .tickPadding(10)
      ;
    yAxis
      .orient('left')
      .tickPadding(10)
      ;
    distX
      .axis('x')
      ;
    distY
      .axis('y')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0;
  
    var showTooltip = function(e, offsetElement) {
      //TODO: make tooltip style an option between single or dual on axes (maybe on all charts with axes?)
  
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          leftX = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          topX = y.range()[0] + margin.top + ( offsetElement.offsetTop || 0),
          leftY = x.range()[0] + margin.left + ( offsetElement.offsetLeft || 0 ),
          topY = e.pos[1] + ( offsetElement.offsetTop || 0),
          xVal = xAxis.tickFormat()(scatter.x()(e.point, e.pointIndex)),
          yVal = yAxis.tickFormat()(scatter.y()(e.point, e.pointIndex));
  
        if( tooltipX != null )
            nv.tooltip.show([leftX, topX], tooltipX(e.series.key, xVal, yVal, e, chart), 'n', 1, offsetElement, 'x-nvtooltip');
        if( tooltipY != null )
            nv.tooltip.show([leftY, topY], tooltipY(e.series.key, xVal, yVal, e, chart), 'e', 1, offsetElement, 'y-nvtooltip');
        if( tooltip != null )
            nv.tooltip.show([left, top], tooltip(e.series.key, xVal, yVal, e, chart), e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    var controlsData = [
      { key: 'Magnify', disabled: true }
    ];
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display noData message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x0 = x0 || x;
        y0 = y0 || y;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-scatterChart').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatterChart nv-chart-' + scatter.id());
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g')
  
        // background for pointer events
        gEnter.append('rect').attr('class', 'nvd3 nv-background')
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-scatterWrap');
        gEnter.append('g').attr('class', 'nv-distWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width( availableWidth / 2 );
  
          wrap.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          wrap.select('.nv-legendWrap')
              .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          controls.width(180).color(['#444']);
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .attr('transform', 'translate(0,' + (-margin.top) +')')
              .call(controls);
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        scatter
            .width(availableWidth)
            .height(availableHeight)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }))
  
        wrap.select('.nv-scatterWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(scatter);
  
  
        //Adjust for x and y padding
        if (xPadding) {
          var xRange = x.domain()[1] - x.domain()[0];
          x.domain([x.domain()[0] - (xPadding * xRange), x.domain()[1] + (xPadding * xRange)]);
        }
  
        if (yPadding) {
          var yRange = y.domain()[1] - y.domain()[0];
          y.domain([y.domain()[0] - (yPadding * yRange), y.domain()[1] + (yPadding * yRange)]);
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
            .scale(x)
            .ticks( xAxis.ticks() && xAxis.ticks().length ? xAxis.ticks() : availableWidth / 100 )
            .tickSize( -availableHeight , 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y.range()[0] + ')')
            .call(xAxis);
  
  
        yAxis
            .scale(y)
            .ticks( yAxis.ticks() && yAxis.ticks().length ? yAxis.ticks() : availableHeight / 36 )
            .tickSize( -availableWidth, 0);
  
        g.select('.nv-y.nv-axis')
            .call(yAxis);
  
  
        if (showDistX) {
          distX
              .getData(scatter.x())
              .scale(x)
              .width(availableWidth)
              .color(data.map(function(d,i) {
                return d.color || color(d, i);
              }).filter(function(d,i) { return !data[i].disabled }));
          gEnter.select('.nv-distWrap').append('g')
              .attr('class', 'nv-distributionX');
          g.select('.nv-distributionX')
              .attr('transform', 'translate(0,' + y.range()[0] + ')')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distX);
        }
  
        if (showDistY) {
          distY
              .getData(scatter.y())
              .scale(y)
              .width(availableHeight)
              .color(data.map(function(d,i) {
                return d.color || color(d, i);
              }).filter(function(d,i) { return !data[i].disabled }));
          gEnter.select('.nv-distWrap').append('g')
              .attr('class', 'nv-distributionY');
          g.select('.nv-distributionY')
              .attr('transform', 'translate(-' + distY.size() + ',0)')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distY);
        }
  
        //------------------------------------------------------------
  
  
  
  
        if (d3.fisheye) {
          g.select('.nv-background')
              .attr('width', availableWidth)
              .attr('height', availableHeight);
  
          g.select('.nv-background').on('mousemove', updateFisheye);
          g.select('.nv-background').on('click', function() { pauseFisheye = !pauseFisheye;});
          scatter.dispatch.on('elementClick.freezeFisheye', function() {
            pauseFisheye = !pauseFisheye;
          });
        }
  
  
        function updateFisheye() {
          if (pauseFisheye) {
            g.select('.nv-point-paths').style('pointer-events', 'all');
            return false;
          }
  
          g.select('.nv-point-paths').style('pointer-events', 'none' );
  
          var mouse = d3.mouse(this);
          x.distortion(fisheye).focus(mouse[0]);
          y.distortion(fisheye).focus(mouse[1]);
  
          g.select('.nv-scatterWrap')
              .call(scatter);
  
          g.select('.nv-x.nv-axis').call(xAxis);
          g.select('.nv-y.nv-axis').call(yAxis);
          g.select('.nv-distributionX')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distX);
          g.select('.nv-distributionY')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distY);
        }
  
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        controls.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          fisheye = d.disabled ? 0 : 2.5;
          g.select('.nv-background') .style('pointer-events', d.disabled ? 'none' : 'all');
          g.select('.nv-point-paths').style('pointer-events', d.disabled ? 'all' : 'none' );
  
          if (d.disabled) {
            x.distortion(fisheye).focus(0);
            y.distortion(fisheye).focus(0);
  
            g.select('.nv-scatterWrap').call(scatter);
            g.select('.nv-x.nv-axis').call(xAxis);
            g.select('.nv-y.nv-axis').call(yAxis);
          } else {
            pauseFisheye = false;
          }
  
          chart(selection);
        });
  
        legend.dispatch.on('legendClick', function(d,i, that) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          chart(selection);
        });
  
        /*
        legend.dispatch.on('legendMouseover', function(d, i) {
          d.hover = true;
          chart(selection);
        });
  
        legend.dispatch.on('legendMouseout', function(d, i) {
          d.hover = false;
          chart(selection);
        });
        */
  
        scatter.dispatch.on('elementMouseover.tooltip', function(e) {
          d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
              .attr('y1', e.pos[1] - availableHeight);
          d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
              .attr('x2', e.pos[0] + distX.size());
  
          e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
          dispatch.tooltipShow(e);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    scatter.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
  
      d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
          .attr('y1', 0);
      d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
          .attr('x2', distY.size());
    });
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.scatter = scatter;
    chart.legend = legend;
    chart.controls = controls;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
    chart.distX = distX;
    chart.distY = distY;
  
    d3.rebind(chart, scatter, 'id', 'interactive', 'pointActive', 'x', 'y', 'shape', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'sizeRange', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'useVoronoi');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      distX.color(color);
      distY.color(color);
      return chart;
    };
  
    chart.showDistX = function(_) {
      if (!arguments.length) return showDistX;
      showDistX = _;
      return chart;
    };
  
    chart.showDistY = function(_) {
      if (!arguments.length) return showDistY;
      showDistY = _;
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.fisheye = function(_) {
      if (!arguments.length) return fisheye;
      fisheye = _;
      return chart;
    };
  
    chart.xPadding = function(_) {
      if (!arguments.length) return xPadding;
      xPadding = _;
      return chart;
    };
  
    chart.yPadding = function(_) {
      if (!arguments.length) return yPadding;
      yPadding = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.tooltipXContent = function(_) {
      if (!arguments.length) return tooltipX;
      tooltipX = _;
      return chart;
    };
  
    chart.tooltipYContent = function(_) {
      if (!arguments.length) return tooltipY;
      tooltipY = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.scatterPlusLineChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var scatter      = nv.models.scatter()
      , xAxis        = nv.models.axis()
      , yAxis        = nv.models.axis()
      , legend       = nv.models.legend()
      , controls     = nv.models.legend()
      , distX        = nv.models.distribution()
      , distY        = nv.models.distribution()
      ;
  
    var margin       = {top: 30, right: 20, bottom: 50, left: 75}
      , width        = null
      , height       = null
      , color        = nv.utils.defaultColor()
      , x            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.xScale()
      , y            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.yScale()
      , showDistX    = false
      , showDistY    = false
      , showLegend   = true
      , showControls = !!d3.fisheye
      , fisheye      = 0
      , pauseFisheye = false
      , tooltips     = true
      , tooltipX     = function(key, x, y) { return '<strong>' + x + '</strong>' }
      , tooltipY     = function(key, x, y) { return '<strong>' + y + '</strong>' }
      , tooltip      = function(key, x, y, date) { return '<h3>' + key + '</h3>' 
                                                        + '<p>' + date + '</p>' }
      //, tooltip      = null
      , dispatch     = d3.dispatch('tooltipShow', 'tooltipHide')
      , noData       = "No Data Available."
      ;
  
    scatter
      .xScale(x)
      .yScale(y)
      ;
    xAxis
      .orient('bottom')
      .tickPadding(10)
      ;
    yAxis
      .orient('left')
      .tickPadding(10)
      ;
    distX
      .axis('x')
      ;
    distY
      .axis('y')
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var x0, y0;
  
    var showTooltip = function(e, offsetElement) {
      //TODO: make tooltip style an option between single or dual on axes (maybe on all charts with axes?)
  
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          leftX = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          topX = y.range()[0] + margin.top + ( offsetElement.offsetTop || 0),
          leftY = x.range()[0] + margin.left + ( offsetElement.offsetLeft || 0 ),
          topY = e.pos[1] + ( offsetElement.offsetTop || 0),
          xVal = xAxis.tickFormat()(scatter.x()(e.point, e.pointIndex)),
          yVal = yAxis.tickFormat()(scatter.y()(e.point, e.pointIndex));
  
        if( tooltipX != null )
            nv.tooltip.show([leftX, topX], tooltipX(e.series.key, xVal, yVal, e, chart), 'n', 1, offsetElement, 'x-nvtooltip');
        if( tooltipY != null )
            nv.tooltip.show([leftY, topY], tooltipY(e.series.key, xVal, yVal, e, chart), 'e', 1, offsetElement, 'y-nvtooltip');
        if( tooltip != null )
            nv.tooltip.show([left, top], tooltip(e.series.key, xVal, yVal, e.point.tooltip, e, chart), e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    var controlsData = [
      { key: 'Magnify', disabled: true }
    ];
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display noData message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = scatter.xScale();
        y = scatter.yScale();
  
        x0 = x0 || x;
        y0 = y0 || y;
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-scatterChart').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatterChart nv-chart-' + scatter.id());
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g')
  
        // background for pointer events
        gEnter.append('rect').attr('class', 'nvd3 nv-background')
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-scatterWrap');
        gEnter.append('g').attr('class', 'nv-regressionLinesWrap');
        gEnter.append('g').attr('class', 'nv-distWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend.width( availableWidth / 2 );
  
          wrap.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          wrap.select('.nv-legendWrap')
              .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          controls.width(180).color(['#444']);
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .attr('transform', 'translate(0,' + (-margin.top) +')')
              .call(controls);
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        scatter
            .width(availableWidth)
            .height(availableHeight)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }))
  
        wrap.select('.nv-scatterWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(scatter);
  
  
        wrap.select('.nv-regressionLinesWrap')
            .attr('clip-path', 'url(#nv-edge-clip-' + scatter.id() + ')');
  
        var regWrap = wrap.select('.nv-regressionLinesWrap').selectAll('.nv-regLines')
                        .data(function(d) { return d });
  
        var reglines = regWrap.enter()
                         .append('g').attr('class', 'nv-regLines')
                         .append('line').attr('class', 'nv-regLine')
                         .style('stroke-opacity', 0);
  
        //d3.transition(regWrap.selectAll('.nv-regLines line'))
        regWrap.selectAll('.nv-regLines line')
            .attr('x1', x.range()[0])
            .attr('x2', x.range()[1])
            .attr('y1', function(d,i) { return y(x.domain()[0] * d.slope + d.intercept) })
            .attr('y2', function(d,i) { return y(x.domain()[1] * d.slope + d.intercept) })
            .style('stroke', function(d,i,j) { return color(d,j) })
            .style('stroke-opacity', function(d,i) {
              return (d.disabled || typeof d.slope === 'undefined' || typeof d.intercept === 'undefined') ? 0 : 1 
            });
  
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
            .scale(x)
            .ticks( xAxis.ticks() ? xAxis.ticks() : availableWidth / 100 )
            .tickSize( -availableHeight , 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + y.range()[0] + ')')
            .call(xAxis);
  
  
        yAxis
            .scale(y)
            .ticks( yAxis.ticks() ? yAxis.ticks() : availableHeight / 36 )
            .tickSize( -availableWidth, 0);
  
        g.select('.nv-y.nv-axis')
            .call(yAxis);
  
  
        if (showDistX) {
          distX
              .getData(scatter.x())
              .scale(x)
              .width(availableWidth)
              .color(data.map(function(d,i) {
                return d.color || color(d, i);
              }).filter(function(d,i) { return !data[i].disabled }));
          gEnter.select('.nv-distWrap').append('g')
              .attr('class', 'nv-distributionX');
          g.select('.nv-distributionX')
              .attr('transform', 'translate(0,' + y.range()[0] + ')')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distX);
        }
  
        if (showDistY) {
          distY
              .getData(scatter.y())
              .scale(y)
              .width(availableHeight)
              .color(data.map(function(d,i) {
                return d.color || color(d, i);
              }).filter(function(d,i) { return !data[i].disabled }));
          gEnter.select('.nv-distWrap').append('g')
              .attr('class', 'nv-distributionY');
          g.select('.nv-distributionY')
              .attr('transform', 'translate(-' + distY.size() + ',0)')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distY);
        }
  
        //------------------------------------------------------------
  
  
  
  
        if (d3.fisheye) {
          g.select('.nv-background')
              .attr('width', availableWidth)
              .attr('height', availableHeight);
  
          g.select('.nv-background').on('mousemove', updateFisheye);
          g.select('.nv-background').on('click', function() { pauseFisheye = !pauseFisheye;});
          scatter.dispatch.on('elementClick.freezeFisheye', function() {
            pauseFisheye = !pauseFisheye;
          });
        }
  
  
        function updateFisheye() {
          if (pauseFisheye) {
            g.select('.nv-point-paths').style('pointer-events', 'all');
            return false;
          }
  
          g.select('.nv-point-paths').style('pointer-events', 'none' );
  
          var mouse = d3.mouse(this);
          x.distortion(fisheye).focus(mouse[0]);
          y.distortion(fisheye).focus(mouse[1]);
  
          g.select('.nv-scatterWrap')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(scatter);
          g.select('.nv-x.nv-axis').call(xAxis);
          g.select('.nv-y.nv-axis').call(yAxis);
          g.select('.nv-distributionX')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distX);
          g.select('.nv-distributionY')
              .datum(data.filter(function(d) { return !d.disabled }))
              .call(distY);
        }
  
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        controls.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          fisheye = d.disabled ? 0 : 2.5;
          g.select('.nv-background') .style('pointer-events', d.disabled ? 'none' : 'all');
          g.select('.nv-point-paths').style('pointer-events', d.disabled ? 'all' : 'none' );
  
          if (d.disabled) {
            x.distortion(fisheye).focus(0);
            y.distortion(fisheye).focus(0);
  
            g.select('.nv-scatterWrap').call(scatter);
            g.select('.nv-x.nv-axis').call(xAxis);
            g.select('.nv-y.nv-axis').call(yAxis);
          } else {
            pauseFisheye = false;
          }
  
          chart(selection);
        });
  
        legend.dispatch.on('legendClick', function(d,i, that) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              wrap.selectAll('.nv-series').classed('disabled', false);
              return d;
            });
          }
  
          chart(selection);
        });
  
        /*
        legend.dispatch.on('legendMouseover', function(d, i) {
          d.hover = true;
          chart(selection);
        });
  
        legend.dispatch.on('legendMouseout', function(d, i) {
          d.hover = false;
          chart(selection);
        });
        */
  
        scatter.dispatch.on('elementMouseover.tooltip', function(e) {
          d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
              .attr('y1', e.pos[1] - availableHeight);
          d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
              .attr('x2', e.pos[0] + distX.size());
  
          e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
          dispatch.tooltipShow(e);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
        //============================================================
  
  
        //store old scales for use in transitions on update
        x0 = x.copy();
        y0 = y.copy();
  
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    scatter.dispatch.on('elementMouseout.tooltip', function(e) {
      dispatch.tooltipHide(e);
  
      d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
          .attr('y1', 0);
      d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
          .attr('x2', distY.size());
    });
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.scatter = scatter;
    chart.legend = legend;
    chart.controls = controls;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
    chart.distX = distX;
    chart.distY = distY;
  
    d3.rebind(chart, scatter, 'id', 'interactive', 'pointActive', 'x', 'y', 'shape', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'sizeRange', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'useVoronoi');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      distX.color(color);
      distY.color(color);
      return chart;
    };
  
    chart.showDistX = function(_) {
      if (!arguments.length) return showDistX;
      showDistX = _;
      return chart;
    };
  
    chart.showDistY = function(_) {
      if (!arguments.length) return showDistY;
      showDistY = _;
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.fisheye = function(_) {
      if (!arguments.length) return fisheye;
      fisheye = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.tooltipXContent = function(_) {
      if (!arguments.length) return tooltipX;
      tooltipX = _;
      return chart;
    };
  
    chart.tooltipYContent = function(_) {
      if (!arguments.length) return tooltipY;
      tooltipY = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.sparkline = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 2, right: 0, bottom: 2, left: 0}
      , width = 400
      , height = 32
      , animate = true
      , x = d3.scale.linear()
      , y = d3.scale.linear()
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , color = nv.utils.getColor(['#000'])
      , xDomain
      , yDomain
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x   .domain(xDomain || d3.extent(data, getX ))
            .range([0, availableWidth]);
  
        y   .domain(yDomain || d3.extent(data, getY ))
            .range([availableHeight, 0]);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-sparkline').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-sparkline');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
  
        //------------------------------------------------------------
  
  
        var paths = wrap.selectAll('path')
            .data(function(d) { return [d] });
        paths.enter().append('path');
        paths.exit().remove();
        paths
            .style('stroke', function(d,i) { return d.color || color(d, i) })
            .attr('d', d3.svg.line()
              .x(function(d,i) { return x(getX(d,i)) })
              .y(function(d,i) { return y(getY(d,i)) })
            );
  
  
        // TODO: Add CURRENT data point (Need Min, Mac, Current / Most recent)
        var points = wrap.selectAll('circle.nv-point')
            .data(function(data) {
                var yValues = data.map(function(d, i) { return getY(d,i); });
                function pointIndex(index) {
                    if (index != -1) {
  	              var result = data[index];
                        result.pointIndex = index;
                        return result;
                    } else {
                        return null;
                    }
                }
                var maxPoint = pointIndex(yValues.lastIndexOf(y.domain()[1])),
                    minPoint = pointIndex(yValues.indexOf(y.domain()[0])),
                    currentPoint = pointIndex(yValues.length - 1);
                return [minPoint, maxPoint, currentPoint].filter(function (d) {return d != null;});
            });
        points.enter().append('circle');
        points.exit().remove();
        points
            .attr('cx', function(d,i) { return x(getX(d,d.pointIndex)) })
            .attr('cy', function(d,i) { return y(getY(d,d.pointIndex)) })
            .attr('r', 2)
            .attr('class', function(d,i) {
              return getX(d, d.pointIndex) == x.domain()[1] ? 'nv-point nv-currentValue' :
                     getY(d, d.pointIndex) == y.domain()[0] ? 'nv-point nv-minValue' : 'nv-point nv-maxValue'
            });
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = d3.functor(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = d3.functor(_);
      return chart;
    };
  
    chart.xScale = function(_) {
      if (!arguments.length) return x;
      x = _;
      return chart;
    };
  
    chart.yScale = function(_) {
      if (!arguments.length) return y;
      y = _;
      return chart;
    };
  
    chart.xDomain = function(_) {
      if (!arguments.length) return xDomain;
      xDomain = _;
      return chart;
    };
  
    chart.yDomain = function(_) {
      if (!arguments.length) return yDomain;
      yDomain = _;
      return chart;
    };
  
    chart.animate = function(_) {
      if (!arguments.length) return animate;
      animate = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.sparklinePlus = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var sparkline = nv.models.sparkline();
  
    var margin = {top: 15, right: 100, bottom: 10, left: 50}
      , width = null
      , height = null
      , x
      , y
      , index = []
      , paused = false
      , xTickFormat = d3.format(',r')
      , yTickFormat = d3.format(',.2f')
      , showValue = true
      , noData = "No Data Available."
      ;
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this);
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        var currentValue = sparkline.y()(data[data.length-1], data.length-1);
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = sparkline.xScale();
        y = sparkline.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-sparklineplus').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-sparklineplus');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-sparklineWrap');
        gEnter.append('g').attr('class', 'nv-valueWrap');
        gEnter.append('g').attr('class', 'nv-hoverArea');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        var sparklineWrap = g.select('.nv-sparklineWrap');
  
        sparkline
          .width(availableWidth)
          .height(availableHeight);
  
        sparklineWrap
            .call(sparkline);
  
        //------------------------------------------------------------
  
  
        var valueWrap = g.select('.nv-valueWrap');
  
        var value = valueWrap.selectAll('.nv-currentValue')
            .data([currentValue]);
  
        value.enter().append('text').attr('class', 'nv-currentValue')
            .attr('dx', 8)
            .attr('dy', '.65em');
  
        value
            .attr('x', availableWidth)
            .attr('y', function(d) { return y(d) })
            .style('fill', sparkline.color()(data[data.length-1], data.length-1))
            .text(yTickFormat(currentValue));
  
  
  
        gEnter.select('.nv-hoverArea').append('rect')
            .on('mousemove', sparklineHover)
            .on('click', function() { paused = !paused })
            .on('mouseout', function() { index = []; updateValueLine(); });
            //.on('mouseout', function() { index = null; updateValueLine(); });
  
        g.select('.nv-hoverArea rect')
            .attr('transform', function(d) { return 'translate(' + -margin.left + ',' + -margin.top + ')' })
            .attr('width', availableWidth + margin.left + margin.right)
            .attr('height', availableHeight + margin.top);
  
  
  
        function updateValueLine() { //index is currently global (within the chart), may or may not keep it that way
          if (paused) return;
  
          var hoverValue = g.selectAll('.nv-hoverValue').data(index)
  
          var hoverEnter = hoverValue.enter()
            .append('g').attr('class', 'nv-hoverValue')
              .style('stroke-opacity', 0)
              .style('fill-opacity', 0);
  
          hoverValue.exit()
            .transition().duration(250)
              .style('stroke-opacity', 0)
              .style('fill-opacity', 0)
              .remove();
  
          hoverValue
              .attr('transform', function(d) { return 'translate(' + x(sparkline.x()(data[d],d)) + ',0)' })
            .transition().duration(250)
              .style('stroke-opacity', 1)
              .style('fill-opacity', 1);
  
          if (!index.length) return;
  
          hoverEnter.append('line')
              .attr('x1', 0)
              .attr('y1', -margin.top)
              .attr('x2', 0)
              .attr('y2', availableHeight);
  
  
          hoverEnter.append('text').attr('class', 'nv-xValue')
              .attr('x', -6)
              .attr('y', -margin.top)
              .attr('text-anchor', 'end')
              .attr('dy', '.9em')
  
  
          g.select('.nv-hoverValue .nv-xValue')
              .text(xTickFormat(sparkline.x()(data[index[0]], index[0])));
  
          hoverEnter.append('text').attr('class', 'nv-yValue')
              .attr('x', 6)
              .attr('y', -margin.top)
              .attr('text-anchor', 'start')
              .attr('dy', '.9em')
  
          g.select('.nv-hoverValue .nv-yValue')
              .text(yTickFormat(sparkline.y()(data[index[0]], index[0])));
  
        }
  
  
        function sparklineHover() {
          if (paused) return;
  
          var pos = d3.mouse(this)[0] - margin.left;
  
          function getClosestIndex(data, x) {
            var distance = Math.abs(sparkline.x()(data[0], 0) - x);
            var closestIndex = 0;
            for (var i = 0; i < data.length; i++){
              if (Math.abs(sparkline.x()(data[i], i) - x) < distance) {
                distance = Math.abs(sparkline.x()(data[i], i) - x);
                closestIndex = i;
              }
            }
            return closestIndex;
          }
  
          index = [getClosestIndex(data, Math.round(x.invert(pos)))];
  
          updateValueLine();
        }
  
      });
  
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.sparkline = sparkline;
  
    d3.rebind(chart, sparkline, 'x', 'y', 'xScale', 'yScale', 'color');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.xTickFormat = function(_) {
      if (!arguments.length) return xTickFormat;
      xTickFormat = _;
      return chart;
    };
  
    chart.yTickFormat = function(_) {
      if (!arguments.length) return yTickFormat;
      yTickFormat = _;
      return chart;
    };
  
    chart.showValue = function(_) {
      if (!arguments.length) return showValue;
      showValue = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    //============================================================
  
  
    return chart;
  }
  
  nv.models.stackedArea = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = 960
      , height = 500
      , color = nv.utils.defaultColor() // a function that computes the color
      , id = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't selet one
      , getX = function(d) { return d.x } // accessor to get the x value from a data point
      , getY = function(d) { return d.y } // accessor to get the y value from a data point
      , style = 'stack'
      , offset = 'zero'
      , order = 'default'
      , interpolate = 'linear'  // controls the line interpolation
      , clipEdge = false // if true, masks lines within x and y scale
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , scatter = nv.models.scatter()
      , dispatch =  d3.dispatch('tooltipShow', 'tooltipHide', 'areaClick', 'areaMouseover', 'areaMouseout')
      ;
  
    scatter
      .size(2.2) // default size
      .sizeDomain([2.2]) // all the same size by default
      ;
  
    /************************************
     * offset:
     *   'wiggle' (stream)
     *   'zero' (stacked)
     *   'expand' (normalize to 100%)
     *   'silhouette' (simple centered)
     *
     * order:
     *   'inside-out' (stream)
     *   'default' (input order)
     ************************************/
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var availableWidth = width - margin.left - margin.right,
            availableHeight = height - margin.top - margin.bottom,
            container = d3.select(this);
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = scatter.xScale();
        y = scatter.yScale();
  
        //------------------------------------------------------------
  
  
        // Injecting point index into each point because d3.layout.stack().out does not give index
        // ***Also storing getY(d,i) as stackedY so that it can be set to 0 if series is disabled
        data = data.map(function(aseries, i) {
                 aseries.values = aseries.values.map(function(d, j) {
                   d.index = j;
                   d.stackedY = aseries.disabled ? 0 : getY(d,j);
                   return d;
                 })
                 return aseries;
               });
  
  
        data = d3.layout.stack()
                 .order(order)
                 .offset(offset)
                 .values(function(d) { return d.values })  //TODO: make values customizeable in EVERY model in this fashion
                 .x(getX)
                 .y(function(d) { return d.stackedY })
                 .out(function(d, y0, y) {
                    d.display = {
                      y: y,
                     y0: y0
                    };
                  })
                (data);
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-stackedarea').data([data]);
        var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedarea');
        var defsEnter = wrapEnter.append('defs');
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-areaWrap');
        gEnter.append('g').attr('class', 'nv-scatterWrap');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
        //------------------------------------------------------------
  
  
        scatter
          .width(availableWidth)
          .height(availableHeight)
          .x(getX)
          .y(function(d) { return d.display.y + d.display.y0 })
          .forceY([0])
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }));
  
  
        var scatterWrap = g.select('.nv-scatterWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
  
        //d3.transition(scatterWrap).call(scatter);
        scatterWrap.call(scatter);
  
  
  
  
  
        defsEnter.append('clipPath')
            .attr('id', 'nv-edge-clip-' + id)
          .append('rect');
  
        wrap.select('#nv-edge-clip-' + id + ' rect')
            .attr('width', availableWidth)
            .attr('height', availableHeight);
  
        g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');
  
  
  
  
        var area = d3.svg.area()
            .x(function(d,i)  { return x(getX(d,i)) })
            .y0(function(d) { return y(d.display.y0) })
            .y1(function(d) { return y(d.display.y + d.display.y0) })
            .interpolate(interpolate);
  
        var zeroArea = d3.svg.area()
            .x(function(d,i)  { return x(getX(d,i)) })
            .y0(function(d) { return y(d.display.y0) })
            .y1(function(d) { return y(d.display.y0) });
  
  
        var path = g.select('.nv-areaWrap').selectAll('path.nv-area')
            .data(function(d) { return d });
            //.data(function(d) { return d }, function(d) { return d.key });
        path.enter().append('path').attr('class', function(d,i) { return 'nv-area nv-area-' + i })
            .on('mouseover', function(d,i) {
              d3.select(this).classed('hover', true);
              dispatch.areaMouseover({
                point: d,
                series: d.key,
                pos: [d3.event.pageX, d3.event.pageY],
                seriesIndex: i
              });
            })
            .on('mouseout', function(d,i) {
              d3.select(this).classed('hover', false);
              dispatch.areaMouseout({
                point: d,
                series: d.key,
                pos: [d3.event.pageX, d3.event.pageY],
                seriesIndex: i
              });
            })
            .on('click', function(d,i) {
              d3.select(this).classed('hover', false);
              dispatch.areaClick({
                point: d,
                series: d.key,
                pos: [d3.event.pageX, d3.event.pageY],
                seriesIndex: i
              });
            })
        //d3.transition(path.exit())
        path.exit()
            .attr('d', function(d,i) { return zeroArea(d.values,i) })
            .remove();
        path
            .style('fill', function(d,i){ return d.color || color(d, i) })
            .style('stroke', function(d,i){ return d.color || color(d, i) });
        //d3.transition(path)
        path
            .attr('d', function(d,i) { return area(d.values,i) })
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        scatter.dispatch.on('elementMouseover.area', function(e) {
          g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', true);
        });
        scatter.dispatch.on('elementMouseout.area', function(e) {
          g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', false);
        });
  
        //============================================================
  
      });
  
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    scatter.dispatch.on('elementClick.area', function(e) {
      dispatch.areaClick(e);
    })
    scatter.dispatch.on('elementMouseover.tooltip', function(e) {
          e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
          dispatch.tooltipShow(e);
    });
    scatter.dispatch.on('elementMouseout.tooltip', function(e) {
          dispatch.tooltipHide(e);
    });
  
    //============================================================
  
  
    //============================================================
    // Global getters and setters
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
    chart.scatter = scatter;
  
    d3.rebind(chart, scatter, 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius');
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = d3.functor(_);
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = d3.functor(_);
      return chart;
    }
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.clipEdge = function(_) {
      if (!arguments.length) return clipEdge;
      clipEdge = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.offset = function(_) {
      if (!arguments.length) return offset;
      offset = _;
      return chart;
    };
  
    chart.order = function(_) {
      if (!arguments.length) return order;
      order = _;
      return chart;
    };
  
    //shortcut for offset + order
    chart.style = function(_) {
      if (!arguments.length) return style;
      style = _;
  
      switch (style) {
        case 'stack':
          chart.offset('zero');
          chart.order('default');
          break;
        case 'stream':
          chart.offset('wiggle');
          chart.order('inside-out');
          break;
        case 'stream-center':
            chart.offset('silhouette');
            chart.order('inside-out');
            break;
        case 'expand':
          chart.offset('expand');
          chart.order('default');
          break;
      }
  
      return chart;
    };
  
    chart.interpolate = function(_) {
  	    if (!arguments.length) return interpolate;
  	    interpolate = _;
  	    return interpolate;
    
    };
    
    //============================================================
  
  
    return chart;
  }
  
  nv.models.stackedAreaChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var stacked = nv.models.stackedArea()
      , xAxis = nv.models.axis()
      , yAxis = nv.models.axis()
      , legend = nv.models.legend()
      , controls = nv.models.legend()
      ;
  
    var margin = {top: 30, right: 25, bottom: 50, left: 60}
      , width = null
      , height = null
      , color = nv.utils.defaultColor() // a function that takes in d, i and returns color
      , showControls = true
      , showLegend = true
      , tooltips = true
      , tooltip = function(key, x, y, e, graph) {
          return '<h3>' + key + '</h3>' +
                 '<p>' +  y + ' on ' + x + '</p>'
        }
      , x //can be accessed via chart.xScale()
      , y //can be accessed via chart.yScale()
      , yAxisTickFormat = d3.format(',.2f')
      , noData = 'No Data Available.'
      , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
      ;
  
    xAxis
      .orient('bottom')
      .tickPadding(7)
      ;
    yAxis
      .orient('left')
      ;
    stacked.scatter
      .pointActive(function(d) {
        //console.log(stacked.y()(d), !!Math.round(stacked.y()(d) * 100));
        return !!Math.round(stacked.y()(d) * 100);
      })
      ;
  
    //============================================================
  
  
    //============================================================
    // Private Variables
    //------------------------------------------------------------
  
    var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(stacked.x()(e.point, e.pointIndex)),
          y = yAxis.tickFormat()(stacked.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);
  
      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    };
  
    //============================================================
  
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
  
        chart.update = function() { chart(selection) };
        chart.container = this;
  
        //------------------------------------------------------------
        // Display No Data message if there's nothing to show.
  
        if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
          var noDataText = container.selectAll('.nv-noData').data([noData]);
  
          noDataText.enter().append('text')
            .attr('class', 'nvd3 nv-noData')
            .attr('dy', '-.7em')
            .style('text-anchor', 'middle');
  
          noDataText
            .attr('x', margin.left + availableWidth / 2)
            .attr('y', margin.top + availableHeight / 2)
            .text(function(d) { return d });
  
          return chart;
        } else {
          container.selectAll('.nv-noData').remove();
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Scales
  
        x = stacked.xScale();
        y = stacked.yScale();
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('g.nv-wrap.nv-stackedAreaChart').data([data]);
        var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedAreaChart').append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-x nv-axis');
        gEnter.append('g').attr('class', 'nv-y nv-axis');
        gEnter.append('g').attr('class', 'nv-stackedWrap');
        gEnter.append('g').attr('class', 'nv-legendWrap');
        gEnter.append('g').attr('class', 'nv-controlsWrap');
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Legend
  
        if (showLegend) {
          legend
            .width( availableWidth * 2 / 3 );
  
          g.select('.nv-legendWrap')
              .datum(data)
              .call(legend);
  
          if ( margin.top != legend.height()) {
            margin.top = legend.height();
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
          g.select('.nv-legendWrap')
              .attr('transform', 'translate(' + ( availableWidth * 1 / 3 ) + ',' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Controls
  
        if (showControls) {
          var controlsData = [
            { key: 'Stacked', disabled: stacked.offset() != 'zero' },
            { key: 'Stream', disabled: stacked.offset() != 'wiggle' },
            { key: 'Expanded', disabled: stacked.offset() != 'expand' }
          ];
  
          controls
            .width( Math.min(280, availableWidth * 1 / 3) )
            .color(['#444', '#444', '#444']);
  
          g.select('.nv-controlsWrap')
              .datum(controlsData)
              .call(controls);
  
  
          if ( margin.top != Math.max(controls.height(), legend.height()) ) {
            margin.top = Math.max(controls.height(), legend.height());
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom;
          }
  
  
          g.select('.nv-controlsWrap')
              .attr('transform', 'translate(0,' + (-margin.top) +')');
        }
  
        //------------------------------------------------------------
  
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
  
  
        //------------------------------------------------------------
        // Main Chart Component(s)
  
        stacked
          .width(availableWidth)
          .height(availableHeight)
  
        var stackedWrap = g.select('.nv-stackedWrap')
            .datum(data);
        //d3.transition(stackedWrap).call(stacked);
        stackedWrap.call(stacked);
  
        //------------------------------------------------------------
  
  
        //------------------------------------------------------------
        // Setup Axes
  
        xAxis
          .scale(x)
          .ticks( availableWidth / 100 )
          .tickSize( -availableHeight, 0);
  
        g.select('.nv-x.nv-axis')
            .attr('transform', 'translate(0,' + availableHeight + ')');
        //d3.transition(g.select('.nv-x.nv-axis'))
        g.select('.nv-x.nv-axis')
          .transition().duration(0)
            .call(xAxis);
  
        yAxis
          .scale(y)
          .ticks(stacked.offset() == 'wiggle' ? 0 : availableHeight / 36)
          .tickSize(-availableWidth, 0)
          .setTickFormat(stacked.offset() == 'expand' ? d3.format('%') : yAxisTickFormat);
  
        //d3.transition(g.select('.nv-y.nv-axis'))
        g.select('.nv-y.nv-axis')
          .transition().duration(0)
            .call(yAxis);
  
        //------------------------------------------------------------
  
  
        //============================================================
        // Event Handling/Dispatching (in chart's scope)
        //------------------------------------------------------------
  
        stacked.dispatch.on('areaClick.toggle', function(e) {
          if (data.filter(function(d) { return !d.disabled }).length === 1)
            data = data.map(function(d) {
              d.disabled = false;
              return d
            });
          else
            data = data.map(function(d,i) {
              d.disabled = (i != e.seriesIndex);
              return d
            });
  
          //selection.transition().call(chart);
          chart(selection);
        });
  
        legend.dispatch.on('legendClick', function(d,i) {
          d.disabled = !d.disabled;
  
          if (!data.filter(function(d) { return !d.disabled }).length) {
            data.map(function(d) {
              d.disabled = false;
              return d;
            });
          }
  
          //selection.transition().call(chart);
          chart(selection);
        });
  
        controls.dispatch.on('legendClick', function(d,i) {
          if (!d.disabled) return;
  
          controlsData = controlsData.map(function(s) {
            s.disabled = true;
            return s;
          });
          d.disabled = false;
  
          switch (d.key) {
            case 'Stacked':
              stacked.style('stack');
              break;
            case 'Stream':
              stacked.style('stream');
              break;
            case 'Expanded':
              stacked.style('expand');
              break;
          }
  
          //selection.transition().call(chart);
          chart(selection);
        });
  
        dispatch.on('tooltipShow', function(e) {
          if (tooltips) showTooltip(e, that.parentNode);
        });
  
      });
  
  
      return chart;
    }
  
  
    //============================================================
    // Event Handling/Dispatching (out of chart's scope)
    //------------------------------------------------------------
  
    stacked.dispatch.on('tooltipShow', function(e) {
      //disable tooltips when value ~= 0
      //// TODO: consider removing points from voronoi that have 0 value instead of this hack
      /*
      if (!Math.round(stacked.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
        setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
        return false;
      }
     */
  
      e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
      dispatch.tooltipShow(e);
    });
  
    stacked.dispatch.on('tooltipHide', function(e) {
      dispatch.tooltipHide(e);
    });
  
    dispatch.on('tooltipHide', function() {
      if (tooltips) nv.tooltip.cleanup();
    });
  
    //============================================================
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    // expose chart's sub-components
    chart.dispatch = dispatch;
    chart.stacked = stacked;
    chart.legend = legend;
    chart.controls = controls;
    chart.xAxis = xAxis;
    chart.yAxis = yAxis;
  
    d3.rebind(chart, stacked, 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'sizeDomain', 'interactive', 'offset', 'order', 'style', 'clipEdge', 'forceX', 'forceY', 'forceSize', 'interpolate');
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return getWidth;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return getHeight;
      height = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      legend.color(color);
      stacked.color(color);
      return chart;
    };
  
    chart.showControls = function(_) {
      if (!arguments.length) return showControls;
      showControls = _;
      return chart;
    };
  
    chart.showLegend = function(_) {
      if (!arguments.length) return showLegend;
      showLegend = _;
      return chart;
    };
  
    chart.tooltip = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.tooltips = function(_) {
      if (!arguments.length) return tooltips;
      tooltips = _;
      return chart;
    };
  
    chart.tooltipContent = function(_) {
      if (!arguments.length) return tooltip;
      tooltip = _;
      return chart;
    };
  
    chart.noData = function(_) {
      if (!arguments.length) return noData;
      noData = _;
      return chart;
    };
  
    yAxis.setTickFormat = yAxis.tickFormat;
    yAxis.tickFormat = function(_) {
      if (!arguments.length) return yAxisTickFormat;
      yAxisTickFormat = _;
      return yAxis;
    };
  
    //============================================================
  
    return chart;
  }
  
  nv.models.undevPieChart = function() {
  
    //============================================================
    // Public Variables with Default Settings
    //------------------------------------------------------------
  
    var margin = {top: 0, right: 0, bottom: 0, left: 0}
      , width = null
      , height = null
      , getValues = function(d) { return d.values }
      , getX = function(d) { return d.x }
      , getY = function(d) { return d.y }
      , getLabel = function(d) { return d.label }
      , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
      , color = nv.utils.defaultColor()
      , valueFormat = d3.format('p')
      , showLabels = true
      , donutLabelsOutside = false
      , labelThreshold = .04 //if slice percentage is under this, don't show label
      , donut = true
      , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
      , showHints = true
      , d3_svg_arcOffset = -Math.PI / 2
      ;
  
    //============================================================
  
    function chart(selection) {
      selection.each(function(data) {
        var container = d3.select(this),
            that = this;
  
        var availableWidth = (width  || parseInt(container.style('width')) || 960)
                               - margin.left - margin.right,
            availableHeight = (height || parseInt(container.style('height')) || 400)
                               - margin.top - margin.bottom,
            radius = Math.min(availableWidth, availableHeight) / 2;
  
        chart.update = function() { chart(selection); };
  
        //------------------------------------------------------------
        // Setup containers and skeleton of chart
  
        var wrap = container.selectAll('.nv-wrap.nv-pie').data([getValues(data[0])]);
        var wrapEnter = wrap.enter().append('g').attr('class','nvd3 nv-wrap nv-pie nv-chart-' + id);
        var gEnter = wrapEnter.append('g');
        var g = wrap.select('g');
  
        gEnter.append('g').attr('class', 'nv-pie');
  
        wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
        g.select('.nv-pie').attr('transform', 'translate(' + availableWidth / 2 + ',' + availableHeight / 2 + ')');
  
        //------------------------------------------------------------
  
        // add check box to toggle hints
        var toggleHintLabel = d3.select(this.parentNode)
          .selectAll('label.nv-toggle-hints').data([0]).enter()
            .insert("label", "svg")
              .attr("class", "nv-toggle-hints")
              .text("Show all hints");
        var toggleHintCheckBox = toggleHintLabel
          .selectAll("input.nv-toggle-hints").data([0]).enter()
            .insert("input")
              .attr("class", "nv-toggle-hints")
              .attr("type", "checkbox");
  
        toggleHintCheckBox.on("change", function() {
          d3.select(this.parentNode.parentNode).selectAll('.nv-hint')
            .classed('always-visible', this.checked);
        });
  
        container
            .on('click', function(d,i) {
                dispatch.chartClick({
                    data: d,
                    index: i,
                    pos: d3.event,
                    id: id
                });
            });
  
  
        var arc = d3.svg.arc()
                    .outerRadius((radius-(radius / 5)));
  
        if (donut) arc.innerRadius(radius / 2);
  
  
        // Setup the Pie chart and choose the data element
        var pie = d3.layout.pie()
            .sort(null)
            .value(function(d) { return d.disabled ? 0 : getY(d) });
  
        var slices = wrap.select('.nv-pie').selectAll('.nv-slice')
            .data(pie);
  
        slices.exit().remove();
  
        var ae = slices.enter().append('g')
                .attr('class', 'nv-slice')
                .on('mouseover', function(d,i){
                  d3.select(this).classed('hover', true);
                  dispatch.elementMouseover({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      pointIndex: i,
                      pos: [d3.event.pageX, d3.event.pageY],
                      id: id
                  });
                })
                .on('mouseout', function(d,i){
                  d3.select(this).classed('hover', false);
                  dispatch.elementMouseout({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      id: id
                  });
                })
                .on('click', function(d,i) {
                  dispatch.elementClick({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      pos: d3.event,
                      id: id
                  });
                  d3.event.stopPropagation();
                })
                .on('dblclick', function(d,i) {
                  dispatch.elementDblClick({
                      label: getX(d.data),
                      value: getY(d.data),
                      point: d.data,
                      index: i,
                      pos: d3.event,
                      id: id
                  });
                  d3.event.stopPropagation();
                });
  
          slices
              .attr('fill', function(d,i) { return color(d, i); })
              .attr('stroke', function(d,i) { return color(d, i); });
  
          var paths = ae.append('path')
              .each(function(d) { this._current = d; });
              //.attr('d', arc);
  
          d3.transition(slices.select('path'))
              .attr('d', arc)
              .attrTween('d', arcTween);
  
          function midAngle(d) {
            var a = (d.startAngle + d.endAngle) / 2 + d3_svg_arcOffset;
            return a;
          }
  
          function isLeftSide(d) {
            return Math.cos(midAngle(d)) < 0;
          }
  
          if (showLabels) {
            // This does the normal label
            var labelsArc = arc;
            if (donutLabelsOutside) {
              labelsArc = d3.svg.arc().outerRadius(arc.outerRadius())
            }
  
            ae.append("g").classed("nv-label", true)
              .each(function(d, i) {
                var group = d3.select(this);
  
                group.append('rect')
                    .style('stroke', '#fff')
                    .style('fill', '#fff')
                    .attr("rx", 3)
                    .attr("ry", 3);
  
                group.append('text')
                    .attr("dy", 3)
                    .style('text-anchor', 'middle') //center the text on it's origin
                    .style('fill', '#000')
  
  
            });
  
            slices.select(".nv-label").transition()
              .attr('transform', function(d) {
                  d.outerRadius = radius + 10; // Set Outer Coordinate
                  d.innerRadius = radius + 15; // Set Inner Coordinate
                  var rotateBy = midAngle(d) * 180 / Math.PI;
                  if (isLeftSide(d)) {
                    rotateBy = rotateBy + 180;
                  }
                  return 'translate(' + labelsArc.centroid(d) + ') ' +
                         'rotate(' + rotateBy + ')';
              });
  
            var rectMargin = 2;
  
            slices.each(function(d, i) {
              var slice = d3.select(this);
              var percent = (d.endAngle - d.startAngle) / (2 * Math.PI);
              var showLabel = d.value && percent > labelThreshold;
              var label = (percent * 100).toFixed(2) + "%";
              slice
                .select(".nv-label text")
                  .text(showLabel ? label : '');
  
              var textBox = slice.select('text').node().getBBox();
              slice.select(".nv-label rect")
                .attr("width", textBox.width + rectMargin * 2)
                .attr("height", textBox.height + rectMargin * 2)
                .attr("transform", function() {
                  return "translate(" + [textBox.x - rectMargin, textBox.y - rectMargin] + ")";
                })
                .style("fill-opacity", showLabel ? 1 : 0);
            });
          }
  
          if (showHints) {
            // This does the hints
            var outerRadius = (radius-(radius / 5)),
                hintMargin = 5,
                hintValueHeight = radius * 0.15,
                hintsStartR = outerRadius,
                hintsControlPointR1 = outerRadius * 1.3,
                hintsControlPointR2 = outerRadius * 1.4,
                hintsEndR = outerRadius * 1.5,
                hintsLeftDomain = [],
                hintsRightDomain = [],
                sumY = 0;
  
            slices.each(function(d,i) {
              if (isLeftSide(d)) {
                hintsLeftDomain.push(i);
              } else {
                hintsRightDomain.push(i);
              }
              sumY = sumY + getY(d.data);
            });
  
            var bound = availableHeight / 2 - hintMargin
  
            var hintsLeftScale = d3.scale.ordinal()
              .domain(hintsLeftDomain)
              .rangePoints([bound, -bound]);
  
            var hintsRightScale = d3.scale.ordinal()
              .domain(hintsRightDomain)
              .rangePoints([-bound, bound]);
  
            var hintLine = d3.svg.line()
                .x(function(d, i) { return d.x; })
                .y(function(d, i) { return d.y; })
                .interpolate("basis");
  
            function hintLineData(d, i) {
              // point 0 - pie edge
              var points = [];
              points.push({
                "x": hintsStartR * Math.cos(midAngle(d)),
                "y": hintsStartR * Math.sin(midAngle(d))
              });
              // point 1 - bezier control point 1
              points.push({
                "x": hintsControlPointR1 * Math.cos(midAngle(d)),
                "y": hintsControlPointR1 * Math.sin(midAngle(d))
              });
              // point 2 - bezier control point 2
              points.push( isLeftSide(d) ?
                { "x": -hintsControlPointR2, "y": hintsLeftScale(i) } :
                // { "x": -hintsControlPointR2, "y": 0 } :
                { "x": hintsControlPointR2, "y": hintsRightScale(i) }
              );
              // point 3 - near hint
              points.push( isLeftSide(d) ?
                { "x": -hintsEndR, "y": hintsLeftScale(i) } :
                // { "x": -hintsEndR, "y": 0 } :
                { "x": hintsEndR, "y": hintsRightScale(i) }
              );
              return points;
            }
  
            slices.each(function(d,i) {
              var hintGroup = d3.select(this).selectAll(".nv-hint")
                .data([0]).enter()
                  .append("g")
                    .attr("class", "nv-hint");
  
              // reference line to hint label
              hintGroup.append("path")
                    .attr("class", "nv-hint-line")
                    .attr("d", hintLine(hintLineData(d, i)))
                    .style("stroke", color(d, i))
                    .style("stroke-width", 2)
                    .style("fill", "none");
  
              // hint label
              hintGroup.append("text")
                .attr("transform", function() {
                  var p = hintLineData(d, i).pop();
                  var x = isLeftSide(d) ? p.x - hintMargin : p.x + hintMargin;
                  return "translate(" + x + ", " + p.y + ")";
                })
                .attr("class", "nv-hint-label")
                .attr("dy", "0.35em")
                // .style("fill", color(d, i))
                .style("fill", "black")
                .style("text-anchor", function() { return isLeftSide(d) ? "end" : "start"; })
                .text(getLabel(d.data));
  
              // hint value
              hintGroup.append("text")
                .attr("class", "nv-hint-value")
                .attr("dy", -hintValueHeight)
                .style("font-size", hintValueHeight + "px")
                .style("fill", "black")
                .style("text-anchor", "middle") //center the text on it's origin
                .text(d.data.value + " / " + sumY);
  
              // hint percent
              hintGroup.append("text")
                .attr("class", "nv-hint-value")
                .attr("dy", hintValueHeight)
                .style("font-size", hintValueHeight + "px")
                .style("fill", "black")
                .style("text-anchor", "middle") //center the text on it's origin
                .text((d.data.value * 100 / sumY).toFixed(2) + "%");
            });
  
          }
  
          // Computes the angle of an arc, converting from radians to degrees.
          function angle(d) {
            var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
            return a > 90 ? a - 180 : a;
          }
  
          function arcTween(a) {
            if (!donut) a.innerRadius = 0;
            var i = d3.interpolate(this._current, a);
            this._current = i(0);
            return function(t) {
              return arc(i(t));
            };
          }
  
          function tweenPie(b) {
            b.innerRadius = 0;
            var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
            return function(t) {
                return arc(i(t));
            };
          }
  
      });
  
      return chart;
    }
  
    chart.width = function(value) {
      if (!arguments.length) return width;
      width = value;
      return chart;
    }
  
  
    //============================================================
    // Expose Public Variables
    //------------------------------------------------------------
  
    chart.dispatch = dispatch;
  
    chart.margin = function(_) {
      if (!arguments.length) return margin;
      margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
      margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
      margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
      margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
      return chart;
    };
  
    chart.width = function(_) {
      if (!arguments.length) return width;
      width = _;
      return chart;
    };
  
    chart.height = function(_) {
      if (!arguments.length) return height;
      height = _;
      return chart;
    };
  
    chart.values = function(_) {
      if (!arguments.length) return getValues;
      getValues = _;
      return chart;
    };
  
    chart.x = function(_) {
      if (!arguments.length) return getX;
      getX = _;
      return chart;
    };
  
    chart.y = function(_) {
      if (!arguments.length) return getY;
      getY = d3.functor(_);
      return chart;
    };
  
    chart.showLabels = function(_) {
      if (!arguments.length) return showLabels;
      showLabels = _;
      return chart;
    };
  
    chart.label = function(_) {
      if (!arguments.length) return getLabel;
      getLabel = _;
      return chart;
    };
  
    chart.donutLabelsOutside = function(_) {
      if (!arguments.length) return donutLabelsOutside;
      donutLabelsOutside = _;
      return chart;
    };
  
    chart.donut = function(_) {
      if (!arguments.length) return donut;
      donut = _;
      return chart;
    };
  
    chart.id = function(_) {
      if (!arguments.length) return id;
      id = _;
      return chart;
    };
  
    chart.color = function(_) {
      if (!arguments.length) return color;
      color = nv.utils.getColor(_);
      return chart;
    };
  
    chart.valueFormat = function(_) {
      if (!arguments.length) return valueFormat;
      valueFormat = _;
      return chart;
    };
  
    chart.labelThreshold = function(_) {
      if (!arguments.length) return labelThreshold;
      labelThreshold = _;
      return chart;
    };
  
    return chart;
  }
  })();