nvd3
Version:
A reusable charting library written in d3.js
124 lines (106 loc) • 3.67 kB
HTML
<html>
<head>
<meta charset="utf-8">
<link href="../build/nv.d3.css" rel="stylesheet" type="text/css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js" charset="utf-8"></script>
<script src="../build/nv.d3.js"></script>
<style>
text {
font: 12px sans-serif;
}
svg {
display: block;
}
html, body, #chart, svg {
margin: 0px;
padding: 0px;
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<div id="chart">
<svg></svg>
</div>
<script>
nv.addGraph({
generate: function() {
var n = 10, // number of layers
m = 200; // number of samples per layer
var data = stream_layers(n,m).map(function(data, i) {
return {
key: 'Stream' + i,
values: data
};
});
var width = nv.utils.windowSize().width;
var height = nv.utils.windowSize().height;
var chart = nv.models.stackedArea()
.width(width)
.height(height);
var svg = d3.select('#chart svg').datum(data);
svg.transition().duration(500).call(chart);
return chart;
},
callback: function(graph) {
graph.dispatch.on('tooltipShow', function(e) {
var offsetElement = document.getElementById("chart"),
left = e.pos[0] + offsetElement.offsetLeft,
top = e.pos[1] + offsetElement.offsetTop,
formatterY = d3.format(",.2%"),
formatterX = function(d) {
return d3.time.format('%x')(new Date(d))
};
var content = '<h3>' + e.series.key + '</h3>' +
'<p>' +
formatterY(graph.y()(e.point)) + ' at ' + formatterX(graph.x()(e.point)) +
'</p>';
nv.tooltip.show([left, top], content);
});
graph.dispatch.on('tooltipHide', function(e) {
nv.tooltip.cleanup();
});
nv.utils.windowResize(function() {
var width = nv.utils.windowSize().width;
var height = nv.utils.windowSize().height;
graph.width(width).height(height);
d3.select('#chart svg').call(graph);
});
}
});
/* Inspired by Lee Byron's test data generator. */
function stream_layers(n, m, o) {
if (arguments.length < 3) o = 0;
function bump(a) {
var x = 1 / (.1 + Math.random()),
y = 2 * Math.random() - .5,
z = 10 / (.1 + Math.random());
for (var i = 0; i < m; i++) {
var w = (i / m - y) * z;
a[i] += x * Math.exp(-w * w);
}
}
return d3.range(n).map(function() {
var a = [], i;
for (i = 0; i < m; i++) a[i] = o + o * Math.random();
for (i = 0; i < 5; i++) bump(a);
return a.map(stream_index);
});
}
/* Another layer generator using gamma distributions. */
function stream_waves(n, m) {
return d3.range(n).map(function(i) {
return d3.range(m).map(function(j) {
var x = 20 * j / m - i / 3;
return 2 * x * Math.exp(-.5 * x);
}).map(stream_index);
});
}
function stream_index(d, i) {
return {x: i, y: Math.max(0, d)};
}
</script>
</body>
</html>