dcos-dygraphs
Version:
dygraphs is a fast, flexible open source JavaScript charting library.
96 lines (81 loc) • 2.79 kB
HTML
<html>
<head>
<title>Daylight Savings</title>
<!--
For production (minified) code, use:
<script type="text/javascript" src="dygraph-combined.js"></script>
-->
<script type="text/javascript" src="../dist/dygraph.js"></script>
<style>
body {
max-width: 1024px;
}
</style>
</head>
<body>
<h2>DST</h2>
<p>This tests that tick marks don't break when the axis crosses into
daylight savings time.</p>
<div id="demodiv"></div>
<p>The tick marks should all be on day boundaries or nice hours (6, 12, 18),
rather than on odd time boundaries like 5, 11, 17 and 23.</p>
<hr/>
<div id="chart2"></div>
<p>This chart shows a continuous line going across the "fall back" EST/EDT event. You may need to switch your computer's time zone to Eastern to see this. The x-axis tick marks go from 01:00 → 01:55 and then back to 01:00.</p>
<hr/>
<div id="chart3"></div>
<p>This chart is analogous to the first, except at a "spring forward".</p>
<hr/>
<div id="chart4"></div>
<p>This chart shows a continuous series which crosses a "spring forward". The x-axis ticks should skip from 1:55AM to 3:00AM.</p>
<script type="text/javascript">
g = new Dygraph(
document.getElementById("demodiv"),
"Date/Time,Purchases\n" +
"2010-11-05 00:00:00,167082\n" +
"2010-11-06 00:00:00,168571\n" +
"2010-11-07 00:00:00,177796\n" +
"2010-11-08 00:00:00,165587\n" +
"2010-11-09 00:00:00,164380\n",
{
width: 1024
}
);
// Generate data which crosses the EST/EDT boundary.
var dst_data = [];
var base_ms = 1383454200000;
for (var x = base_ms; x < base_ms + 1000 * 60 * 80; x += 1000) {
dst_data.push([new Date(x), x]);
}
g2 = new Dygraph(
document.getElementById("chart2"),
dst_data,
{ width: 1024, labels: ['Date', 'Value'] }
);
g3 = new Dygraph(
document.getElementById("chart3"),
"Date/Time,Purchases\n" +
"2011-03-11 00:00:00,167082\n" +
"2011-03-12 00:00:00,168571\n" +
"2011-03-13 00:00:00,177796\n" +
"2011-03-14 00:00:00,165587\n" +
"2011-03-15 00:00:00,164380\n",
{
width: 1024,
dateWindow: [1299989043119.4365, 1300080693627.4866]
}
);
var base_ms_spring = 1299999000000;
var dst_data_spring = [];
for (var x = base_ms_spring; x < base_ms_spring + 1000 * 60 * 80; x += 1000) {
dst_data_spring.push([new Date(x), x]);
}
g4 = new Dygraph(
document.getElementById("chart4"),
dst_data_spring,
{ width: 1024, labels: ['Date', 'Value'] }
);
</script>
</body>
</html>