SVG Chart Libraries (NVD3, DC.JS)

JavaScript performance comparison

Revision 18 of this test case created by Bipin Roshan Nag

Info

Correcting the URL for dc.js

Preparation code

<script src="//square.github.io/crossfilter/crossfilter.v1.min.js"></script>
<div id="test"></div>
<div id="legend"></div>
<svg id="svgtest"></svg>

<style>
div.dc-chart {
    float: left;
}

.dc-chart rect.bar {
    stroke: none;
    cursor: pointer;
}

.dc-chart rect.bar:hover {
    fill-opacity: .5;
}

.dc-chart rect.stack1 {
    stroke: none;
    fill: red;
}

.dc-chart rect.stack2 {
    stroke: none;
    fill: green;
}

.dc-chart rect.deselected {
    stroke: none;
    fill: #ccc;
}

.dc-chart .pie-slice {
    fill: white;
    font-size: 12px;
    cursor: pointer;
}

.dc-chart .pie-slice.external{
    fill: black;
}

.dc-chart .pie-slice :hover {
    fill-opacity: .8;
}

.dc-chart .pie-slice.highlight {
    fill-opacity: .8;
}

.dc-chart .selected path {
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
}

.dc-chart .deselected path {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .axis path, .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}

.dc-chart .axis text {
    font: 10px sans-serif;
}

.dc-chart .grid-line {
    fill: none;
    stroke: #ccc;
    opacity: .5;
    shape-rendering: crispEdges;
}

.dc-chart .grid-line line {
    fill: none;
    stroke: #ccc;
    opacity: .5;
    shape-rendering: crispEdges;
}

.dc-chart .brush rect.background {
    z-index: -999;
}

.dc-chart .brush rect.extent {
    fill: steelblue;
    fill-opacity: .125;
}

.dc-chart .brush .resize path {
    fill: #eee;
    stroke: #666;
}

.dc-chart path.line {
    fill: none;
    stroke-width: 1.5px;
}

.dc-chart circle.dot {
    stroke: none;
}

.dc-chart g.dc-tooltip path {
    fill: none;
    stroke: grey;
    stroke-opacity: .8;
}

.dc-chart path.area {
    fill-opacity: .3;
    stroke: none;
}

.dc-chart .node {
    font-size: 0.7em;
    cursor: pointer;
}

.dc-chart .node :hover {
    fill-opacity: .8;
}

.dc-chart .selected circle {
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
}

.dc-chart .deselected circle {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .bubble {
    stroke: none;
    fill-opacity: 0.6;
}

.dc-data-count {
    float: right;
    margin-top: 15px;
    margin-right: 15px;
}

.dc-data-count .filter-count {
    color: #3182bd;
    font-weight: bold;
}

.dc-data-count .total-count {
    color: #3182bd;
    font-weight: bold;
}

.dc-data-table {
}

.dc-chart g.state {
    cursor: pointer;
}

.dc-chart g.state :hover {
    fill-opacity: .8;
}

.dc-chart g.state path {
    stroke: white;
}

.dc-chart g.selected path {
}

.dc-chart g.deselected path {
    fill: grey;
}

.dc-chart g.selected text {
}

.dc-chart g.deselected text {
    display: none;
}

.dc-chart g.county path {
    stroke: white;
    fill: none;
}

.dc-chart g.debug rect {
    fill: blue;
    fill-opacity: .2;
}

.dc-chart g.row rect {
    fill-opacity: 0.8;
    cursor: pointer;
}

.dc-chart g.row rect:hover {
    fill-opacity: 0.6;
}

.dc-chart g.row text {
    fill: white;
    font-size: 12px;
    cursor: pointer;
}

.dc-legend {
    font-size: 11px;
}

.dc-legend-item {
    cursor: pointer;
}

.dc-chart g.axis text {
    /* Makes it so the user can't accidentally click and select text that is meant as a label only */
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10 */
    -o-user-select: none;
    user-select: none;
    pointer-events: none;
}

.dc-chart path.highlight {
    stroke-width: 3;
    fill-opacity: 1;
    stroke-opacity: 1;
}

.dc-chart .highlight {
    fill-opacity: 1;
    stroke-opacity: 1;
}

.dc-chart .fadeout {
    fill-opacity: 0.2;
    stroke-opacity: 0.2;
}

.dc-chart path.dc-symbol, g.dc-legend-item.fadeout {
    fill-opacity: 0.5;
    stroke-opacity: 0.5;
}

.dc-hard .number-display {
    float: none;
}

.dc-chart .box text {
    font: 10px sans-serif;
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10 */
    -o-user-select: none;
    user-select: none;
    pointer-events: none;
}

.dc-chart .box line,
.dc-chart .box circle {
    fill: #fff;
    stroke: #000;
    stroke-width: 1.5px;
}

.dc-chart .box rect {
    stroke: #000;
    stroke-width: 1.5px;
}

.dc-chart .box .center {
    stroke-dasharray: 3,3;
}

.dc-chart .box .outlier {
    fill: none;
    stroke: #ccc;
}

.dc-chart .box.deselected .box {
    fill: #ccc;
}

.dc-chart .box.deselected {
    opacity: .5;
}

.dc-chart .symbol{
    stroke: none;
}

.dc-chart .heatmap .box-group.deselected rect {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .heatmap g.axis text {
    pointer-events: all;
    cursor: pointer;
}

/********************
 * HTML CSS
 */


.chartWrap {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

/********************
  Box shadow and border radius styling
*/
.nvtooltip.with-3d-shadow, .with-3d-shadow .nvtooltip {
  -moz-box-shadow: 0 5px 10px rgba(0,0,0,.2);
  -webkit-box-shadow: 0 5px 10px rgba(0,0,0,.2);
  box-shadow: 0 5px 10px rgba(0,0,0,.2);

  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  border-radius: 6px;
}

/********************
 * TOOLTIP CSS
 */

.nvtooltip {
  position: absolute;
  background-color: rgba(255,255,255,1.0);
  padding: 1px;
  border: 1px solid rgba(0,0,0,.2);
  z-index: 10000;

  font-family: Arial;
  font-size: 13px;
  text-align: left;
  pointer-events: none;

  white-space: nowrap;

  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/*Give tooltips that old fade in transition by
    putting a "with-transitions" class on the container div.
*/
.nvtooltip.with-transitions, .with-transitions .nvtooltip {
  transition: opacity 250ms linear;
  -moz-transition: opacity 250ms linear;
  -webkit-transition: opacity 250ms linear;

  transition-delay: 250ms;
  -moz-transition-delay: 250ms;
  -webkit-transition-delay: 250ms;
}

.nvtooltip.x-nvtooltip,
.nvtooltip.y-nvtooltip {
  padding: 8px;
}

.nvtooltip h3 {
  margin: 0;
  padding: 4px 14px;
  line-height: 18px;
  font-weight: normal;
  background-color: rgba(247,247,247,0.75);
  text-align: center;

  border-bottom: 1px solid #ebebeb;

  -webkit-border-radius: 5px 5px 0 0;
  -moz-border-radius: 5px 5px 0 0;
  border-radius: 5px 5px 0 0;
}

.nvtooltip p {
  margin: 0;
  padding: 5px 14px;
  text-align: center;
}

.nvtooltip span {
  display: inline-block;
  margin: 2px 0;
}

.nvtooltip table {
  margin: 6px;
  border-spacing:0;
}


.nvtooltip table td {
  padding: 2px 9px 2px 0;
  vertical-align: middle;
}

.nvtooltip table td.key {
  font-weight:normal;
}
.nvtooltip table td.value {
  text-align: right;
  font-weight: bold;
}

.nvtooltip table tr.highlight td {
  padding: 1px 9px 1px 0;
  border-bottom-style: solid;
  border-bottom-width: 1px;
  border-top-style: solid;
  border-top-width: 1px;
}

.nvtooltip table td.legend-color-guide div {
  width: 8px;
  height: 8px;
  vertical-align: middle;
}

.nvtooltip .footer {
  padding: 3px;
  text-align: center;
}


.nvtooltip-pending-removal {
  position: absolute;
  pointer-events: none;
}


/********************
 * SVG CSS
 */


svg {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  /* Trying to get SVG to act like a greedy block in all browsers */
  display: block;
  width:100%;
  height:100%;
}


svg text {
  font: normal 12px Arial;
}

svg .title {
 font: bold 14px Arial;
}

.nvd3 .nv-background {
  fill: white;
  fill-opacity: 0;
  /*
  pointer-events: none;
  */
}

.nvd3.nv-noData {
  font-size: 18px;
  font-weight: bold;
}


/**********
*  Brush
*/

.nv-brush .extent {
  fill-opacity: .125;
  shape-rendering: crispEdges;
}



/**********
*  Legend
*/

.nvd3 .nv-legend .nv-series {
  cursor: pointer;
}

.nvd3 .nv-legend .disabled circle {
  fill-opacity: 0;
}



/**********
*  Axes
*/
.nvd3 .nv-axis {
  pointer-events:none;
}

.nvd3 .nv-axis path {
  fill: none;
  stroke: #000;
  stroke-opacity: .75;
  shape-rendering: crispEdges;
}

.nvd3 .nv-axis path.domain {
  stroke-opacity: .75;
}

.nvd3 .nv-axis.nv-x path.domain {
  stroke-opacity: 0;
}

.nvd3 .nv-axis line {
  fill: none;
  stroke: #e5e5e5;
  shape-rendering: crispEdges;
}

.nvd3 .nv-axis .zero line,
/*this selector may not be necessary*/ .nvd3 .nv-axis line.zero {
  stroke-opacity: .75;
}

.nvd3 .nv-axis .nv-axisMaxMin text {
  font-weight: bold;
}

.nvd3 .x  .nv-axis .nv-axisMaxMin text,
.nvd3 .x2 .nv-axis .nv-axisMaxMin text,
.nvd3 .x3 .nv-axis .nv-axisMaxMin text {
  text-anchor: middle
}



/**********
*  Brush
*/

.nv-brush .resize path {
  fill: #eee;
  stroke: #666;
}



/**********
*  Bars
*/

.nvd3 .nv-bars .negative rect {
    zfill: brown;
}

.nvd3 .nv-bars rect {
  zfill: steelblue;
  fill-opacity: .75;

  transition: fill-opacity 250ms linear;
  -moz-transition: fill-opacity 250ms linear;
  -webkit-transition: fill-opacity 250ms linear;
}

.nvd3 .nv-bars rect.hover {
  fill-opacity: 1;
}

.nvd3 .nv-bars .hover rect {
  fill: lightblue;
}

.nvd3 .nv-bars text {
  fill: rgba(0,0,0,0);
}

.nvd3 .nv-bars .hover text {
  fill: rgba(0,0,0,1);
}


/**********
*  Bars
*/

.nvd3 .nv-multibar .nv-groups rect,
.nvd3 .nv-multibarHorizontal .nv-groups rect,
.nvd3 .nv-discretebar .nv-groups rect {
  stroke-opacity: 0;

  transition: fill-opacity 250ms linear;
  -moz-transition: fill-opacity 250ms linear;
  -webkit-transition: fill-opacity 250ms linear;
}

.nvd3 .nv-multibar .nv-groups rect:hover,
.nvd3 .nv-multibarHorizontal .nv-groups rect:hover,
.nvd3 .nv-discretebar .nv-groups rect:hover {
  fill-opacity: 1;
}

.nvd3 .nv-discretebar .nv-groups text,
.nvd3 .nv-multibarHorizontal .nv-groups text {
  font-weight: bold;
  fill: rgba(0,0,0,1);
  stroke: rgba(0,0,0,0);
}

/***********
*  Pie Chart
*/

.nvd3.nv-pie path {
  stroke-opacity: 0;
  transition: fill-opacity 250ms linear, stroke-width 250ms linear, stroke-opacity 250ms linear;
  -moz-transition: fill-opacity 250ms linear, stroke-width 250ms linear, stroke-opacity 250ms linear;
  -webkit-transition: fill-opacity 250ms linear, stroke-width 250ms linear, stroke-opacity 250ms linear;

}

.nvd3.nv-pie .nv-slice text {
  stroke: #000;
  stroke-width: 0;
}

.nvd3.nv-pie path {
  stroke: #fff;
  stroke-width: 1px;
  stroke-opacity: 1;
}

.nvd3.nv-pie .hover path {
  fill-opacity: .7;
}
.nvd3.nv-pie .nv-label {
  pointer-events: none;
}
.nvd3.nv-pie .nv-label rect {
  fill-opacity: 0;
  stroke-opacity: 0;
}

/**********
* Lines
*/

.nvd3 .nv-groups path.nv-line {
  fill: none;
  stroke-width: 1.5px;
  /*
  stroke-linecap: round;
  shape-rendering: geometricPrecision;

  transition: stroke-width 250ms linear;
  -moz-transition: stroke-width 250ms linear;
  -webkit-transition: stroke-width 250ms linear;

  transition-delay: 250ms
  -moz-transition-delay: 250ms;
  -webkit-transition-delay: 250ms;
  */
}

.nvd3 .nv-groups path.nv-line.nv-thin-line {
  stroke-width: 1px;
}


.nvd3 .nv-groups path.nv-area {
  stroke: none;
  /*
  stroke-linecap: round;
  shape-rendering: geometricPrecision;

  stroke-width: 2.5px;
  transition: stroke-width 250ms linear;
  -moz-transition: stroke-width 250ms linear;
  -webkit-transition: stroke-width 250ms linear;

  transition-delay: 250ms
  -moz-transition-delay: 250ms;
  -webkit-transition-delay: 250ms;
  */
}

.nvd3 .nv-line.hover path {
  stroke-width: 6px;
}

/*
.nvd3.scatter .groups .point {
  fill-opacity: 0.1;
  stroke-opacity: 0.1;
}
  */

.nvd3.nv-line .nvd3.nv-scatter .nv-groups .nv-point {
  fill-opacity: 0;
  stroke-opacity: 0;
}

.nvd3.nv-scatter.nv-single-point .nv-groups .nv-point {
  fill-opacity: .5 !important;
  stroke-opacity: .5 !important;
}


.with-transitions .nvd3 .nv-groups .nv-point {
  transition: stroke-width 250ms linear, stroke-opacity 250ms linear;
  -moz-transition: stroke-width 250ms linear, stroke-opacity 250ms linear;
  -webkit-transition: stroke-width 250ms linear, stroke-opacity 250ms linear;

}

.nvd3.nv-scatter .nv-groups .nv-point.hover,
.nvd3 .nv-groups .nv-point.hover {
  stroke-width: 7px;
  fill-opacity: .95 !important;
  stroke-opacity: .95 !important;
}


.nvd3 .nv-point-paths path {
  stroke: #aaa;
  stroke-opacity: 0;
  fill: #eee;
  fill-opacity: 0;
}



.nvd3 .nv-indexLine {
  cursor: ew-resize;
}


/**********
* Distribution
*/

.nvd3 .nv-distribution {
  pointer-events: none;
}



/**********
*  Scatter
*/

/* **Attempting to remove this for useVoronoi(false), need to see if it's required anywhere
.nvd3 .nv-groups .nv-point {
  pointer-events: none;
}
*/

.nvd3 .nv-groups .nv-point.hover {
  stroke-width: 20px;
  stroke-opacity: .5;
}

.nvd3 .nv-scatter .nv-point.hover {
  fill-opacity: 1;
}

/*
.nv-group.hover .nv-point {
  fill-opacity: 1;
}
*/


/**********
*  Stacked Area
*/

.nvd3.nv-stackedarea path.nv-area {
  fill-opacity: .7;
  /*
  stroke-opacity: .65;
  fill-opacity: 1;
  */
  stroke-opacity: 0;

  transition: fill-opacity 250ms linear, stroke-opacity 250ms linear;
  -moz-transition: fill-opacity 250ms linear, stroke-opacity 250ms linear;
  -webkit-transition: fill-opacity 250ms linear, stroke-opacity 250ms linear;

  /*
  transition-delay: 500ms;
  -moz-transition-delay: 500ms;
  -webkit-transition-delay: 500ms;
  */

}

.nvd3.nv-stackedarea path.nv-area.hover {
  fill-opacity: .9;
  /*
  stroke-opacity: .85;
  */
}
/*
.d3stackedarea .groups path {
  stroke-opacity: 0;
}
  */



.nvd3.nv-stackedarea .nv-groups .nv-point {
  stroke-opacity: 0;
  fill-opacity: 0;
}

/*
.nvd3.nv-stackedarea .nv-groups .nv-point.hover {
  stroke-width: 20px;
  stroke-opacity: .75;
  fill-opacity: 1;
}*/



/**********
*  Line Plus Bar
*/

.nvd3.nv-linePlusBar .nv-bar rect {
  fill-opacity: .75;
}

.nvd3.nv-linePlusBar .nv-bar rect:hover {
  fill-opacity: 1;
}


/**********
*  Bullet
*/

.nvd3.nv-bullet { font: 10px sans-serif; }
.nvd3.nv-bullet .nv-measure { fill-opacity: .8; }
.nvd3.nv-bullet .nv-measure:hover { fill-opacity: 1; }
.nvd3.nv-bullet .nv-marker { stroke: #000; stroke-width: 2px; }
.nvd3.nv-bullet .nv-markerTriangle { stroke: #000; fill: #fff; stroke-width: 1.5px; }
.nvd3.nv-bullet .nv-tick line { stroke: #666; stroke-width: .5px; }
.nvd3.nv-bullet .nv-range.nv-s0 { fill: #eee; }
.nvd3.nv-bullet .nv-range.nv-s1 { fill: #ddd; }
.nvd3.nv-bullet .nv-range.nv-s2 { fill: #ccc; }
.nvd3.nv-bullet .nv-title { font-size: 14px; font-weight: bold; }
.nvd3.nv-bullet .nv-subtitle { fill: #999; }


.nvd3.nv-bullet .nv-range {
  fill: #bababa;
  fill-opacity: .4;
}
.nvd3.nv-bullet .nv-range:hover {
  fill-opacity: .7;
}



/**********
* Sparkline
*/

.nvd3.nv-sparkline path {
  fill: none;
}

.nvd3.nv-sparklineplus g.nv-hoverValue {
  pointer-events: none;
}

.nvd3.nv-sparklineplus .nv-hoverValue line {
  stroke: #333;
  stroke-width: 1.5px;
 }

.nvd3.nv-sparklineplus,
.nvd3.nv-sparklineplus g {
  pointer-events: all;
}

.nvd3 .nv-hoverArea {
  fill-opacity: 0;
  stroke-opacity: 0;
}

.nvd3.nv-sparklineplus .nv-xValue,
.nvd3.nv-sparklineplus .nv-yValue {
  /*
  stroke: #666;
  */
  stroke-width: 0;
  font-size: .9em;
  font-weight: normal;
}

.nvd3.nv-sparklineplus .nv-yValue {
  stroke: #f66;
}

.nvd3.nv-sparklineplus .nv-maxValue {
  stroke: #2ca02c;
  fill: #2ca02c;
}

.nvd3.nv-sparklineplus .nv-minValue {
  stroke: #d62728;
  fill: #d62728;
}

.nvd3.nv-sparklineplus .nv-currentValue {
  /*
  stroke: #444;
  fill: #000;
  */
  font-weight: bold;
  font-size: 1.1em;
}

/**********
* historical stock
*/

.nvd3.nv-ohlcBar .nv-ticks .nv-tick {
  stroke-width: 2px;
}

.nvd3.nv-ohlcBar .nv-ticks .nv-tick.hover {
  stroke-width: 4px;
}

.nvd3.nv-ohlcBar .nv-ticks .nv-tick.positive {
 stroke: #2ca02c;
}

.nvd3.nv-ohlcBar .nv-ticks .nv-tick.negative {
 stroke: #d62728;
}

.nvd3.nv-historicalStockChart .nv-axis .nv-axislabel {
  font-weight: bold;
}

.nvd3.nv-historicalStockChart .nv-dragTarget {
  fill-opacity: 0;
  stroke: none;
  cursor: move;
}

.nvd3 .nv-brush .extent {
  /*
  cursor: ew-resize !important;
  */
  fill-opacity: 0 !important;
}

.nvd3 .nv-brushBackground rect {
  stroke: #000;
  stroke-width: .4;
  fill: #fff;
  fill-opacity: .7;
}



/**********
* Indented Tree
*/


/**
 * TODO: the following 3 selectors are based on classes used in the example.  I should either make them standard and leave them here, or move to a CSS file not included in the library
 */
.nvd3.nv-indentedtree .name {
  margin-left: 5px;
}

.nvd3.nv-indentedtree .clickable {
  color: #08C;
  cursor: pointer;
}

.nvd3.nv-indentedtree span.clickable:hover {
  color: #005580;
  text-decoration: underline;
}


.nvd3.nv-indentedtree .nv-childrenCount {
  display: inline-block;
  margin-left: 5px;
}

.nvd3.nv-indentedtree .nv-treeicon {
  cursor: pointer;
  /*
  cursor: n-resize;
  */
}

.nvd3.nv-indentedtree .nv-treeicon.nv-folded {
  cursor: pointer;
  /*
  cursor: s-resize;
  */
}

/**********
* Parallel Coordinates
*/

.nvd3 .background path {
  fill: none;
  stroke: #ccc;
  stroke-opacity: .4;
  shape-rendering: crispEdges;
}

.nvd3 .foreground path {
  fill: none;
  stroke: steelblue;
  stroke-opacity: .7;
}

.nvd3 .brush .extent {
  fill-opacity: .3;
  stroke: #fff;
  shape-rendering: crispEdges;
}

.nvd3 .axis line, .axis path {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.nvd3 .axis text {
  text-shadow: 0 1px 0 #fff;
}

/****
Interactive Layer
*/
.nvd3 .nv-interactiveGuideLine {
  pointer-events:none;
}
.nvd3 line.nv-guideline {
  stroke: #ccc;
}
</style>


<script src="//rawgithub.com/mbostock/d3/master/d3.min.js"></script>

<script src="http://rawgit.com/dc-js/dc.js/master/dc.min.js"></script>
<script src="//nvd3.org/assets/js/nv.d3.js"></script>
<script>

/* DC.JS */
var data = [];

for (var i = 0; i < 100; i++) {
    data.push({x: i, sin: Math.sin(i/10), cos: 0.5 * Math.cos(i/10) });
}
var ndx = crossfilter(data),
  runDimension = ndx.dimension(function(d) {
    return +d.x;
  }),
  speedSumGroup = runDimension.group().reduceSum(function(d) {
    return d.sin;
  });
speedSumGroup2 = runDimension.group().reduceSum(function(d) {
  return d.cos;
});

/* NVD3 */
var sin = [], cos = [];

for (var i = 0; i < 100; i++) {
    sin.push({x: i, y: Math.sin(i/10)});
    cos.push({x: i, y: .5 * Math.cos(i/10)});
}

var nvd3_data = [{
    values: sin,
    key: 'Sine',
    color: '#FF0000'
}, {
    values: cos,
    key: 'Cosine',
    color: '#0000FF'
}];
</script>
<script>
Benchmark.prototype.teardown = function() {
    document.getElementById("svgtest").innerHTML = "";
    document.getElementById("test").innerHTML = "";
};
</script>

Preparation code output

Test runner

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Testing in unknown unknown
Test Ops/sec
NVD3
nv.addGraph(function() {
  d3.select('#svgtest')
    .datum(nvd3_data)
    .call(nv.models.lineChart().useInteractiveGuideline(true).width(1000));
});
pending…
DC.JS
var chart = dc.compositeChart("#test");
chart
  .width(1000)
  .x(d3.scale.linear().domain([0, 100]))
  .compose([
    dc.lineChart(chart)
    .dimension(runDimension)
    .colors('red')
    .group(speedSumGroup),
    dc.lineChart(chart)
    .dimension(runDimension)
    .colors('blue')
    .group(speedSumGroup2)
  ])
  .render();
pending…

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