dc
Version:
A multi-dimensional charting library built to work natively with crossfilter and rendered using d3.js
82 lines (72 loc) • 2.78 kB
HTML
<html lang="en">
<head>
<title>dc.js - Row Chart with Target Lines</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="../css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="../css/dc.css"/>
</head>
<body>
<div class="container">
<script type="text/javascript" src="header.js"></script>
<div id="test"></div>
<script type="text/javascript" src="../js/promise-polyfill.js"></script>
<script type="text/javascript" src="../js/fetch.umd.js"></script>
<script type="text/javascript" src="../js/d3.js"></script>
<script type="text/javascript" src="../js/crossfilter.js"></script>
<script type="text/javascript" src="../js/dc.js"></script>
<script type="text/javascript">
var chart = dc.rowChart("#test");
d3.csv("morley.csv").then(function(experiments) {
experiments.forEach(function(x) {
x.Speed = +x.Speed;
});
var ndx = crossfilter(experiments),
runDimension = ndx.dimension(function(d) {return +d.Run;}),
speedSumGroup = runDimension.group().reduceSum(function(d) {return d.Speed * d.Run / 1000;});
// use your keys in this map. or your could reduce these in your data
var _targets = {
5: 20,
7: 15,
9: 22,
11: 7,
13: 40,
20: 70
};
chart
.width(768)
.height(480)
.x(d3.scaleLinear().domain([6,20]))
.elasticX(true)
.dimension(runDimension)
.group(speedSumGroup)
.on('pretransition', function(chart) {
// read height from one of the row rects, because it's difficult to calculate
var height = chart.select('g.row rect').attr('height');
// add vertical target line for any row which does not have one
var target = chart.selectAll('g.row')
.selectAll('path.target').data(function(d) { return [d]; });
target = target.enter().append('path')
.attr('class', 'target')
.attr('stroke', 'red')
.attr('visibility', function(d) {
return (d.value.target !== undefined || _targets[d.key] !== undefined) ? 'visible' : 'hidden';
})
.attr('d', function(d) {
return 'M0,0 v' + height;
}).merge(target);
// move into position (also move any targets that changed)
target.transition().duration(chart.transitionDuration())
.attr('visibility', function(d) {
return (d.value.target !== undefined || _targets[d.key] !== undefined) ? 'visible' : 'hidden';
})
.attr('d', function(d) {
return 'M' + (chart.x()(d.value.target || _targets[d.key] || 0)+0.5) + ',0 v' + height;
});
});
chart.render();
});
</script>
</div>
</body>
</html>