tests/daylight-savings.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../css/dygraph.css">
   5     <title>Daylight Savings</title>
   6     <!--
   7     For production (minified) code, use:
   8     <script type="text/javascript" src="dygraph-combined.js"></script>
   9     -->
  10     <script type="text/javascript" src="../dist/dygraph.js"></script>
  11
  12     <style>
  13       body {
  14         max-width: 1024px;
  15       }
  16     </style>
  17
  18   </head>
  19   <body>
  20     <h2>DST</h2>
  21     <p>This tests that tick marks don't break when the axis crosses into
  22     daylight savings time.</p>
  23
  24     <div id="demodiv"></div>
  25
  26     <p>The tick marks should all be on day boundaries or nice hours (6, 12, 18),
  27     rather than on odd time boundaries like 5, 11, 17 and 23.</p>
  28
  29     <hr/>
  30     <div id="chart2"></div>
  31     <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 &rarr; 01:55 and then back to 01:00.</p>
  32
  33     <hr/>
  34     <div id="chart3"></div>
  35     <p>This chart is analogous to the first, except at a "spring forward".</p>
  36
  37     <hr/>
  38     <div id="chart4"></div>
  39     <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>
  40
  41     <script type="text/javascript">
  42       g = new Dygraph(
  43               document.getElementById("demodiv"),
  44 "Date/Time,Purchases\n" +
  45 "2010-11-05 00:00:00,167082\n" +
  46 "2010-11-06 00:00:00,168571\n" +
  47 "2010-11-07 00:00:00,177796\n" +
  48 "2010-11-08 00:00:00,165587\n" +
  49 "2010-11-09 00:00:00,164380\n",
  50           {
  51             width: 1024
  52           }
  53           );
  54
  55       // Generate data which crosses the EST/EDT boundary.
  56       var dst_data = [];
  57       var base_ms = 1383454200000;
  58       for (var x = base_ms; x < base_ms + 1000 * 60 * 80; x += 1000) {
  59         dst_data.push([new Date(x), x]);
  60       }
  61
  62       g2 = new Dygraph(
  63               document.getElementById("chart2"),
  64               dst_data,
  65           { width: 1024, labels: ['Date', 'Value'] }
  66           );
  67
  68       g3 = new Dygraph(
  69               document.getElementById("chart3"),
  70 "Date/Time,Purchases\n" +
  71 "2011-03-11 00:00:00,167082\n" +
  72 "2011-03-12 00:00:00,168571\n" +
  73 "2011-03-13 00:00:00,177796\n" +
  74 "2011-03-14 00:00:00,165587\n" +
  75 "2011-03-15 00:00:00,164380\n",
  76           {
  77             width: 1024,
  78             dateWindow: [1299989043119.4365, 1300080693627.4866]
  79           }
  80           );
  81
  82       var base_ms_spring = 1299999000000;
  83       var dst_data_spring = [];
  84       for (var x = base_ms_spring; x < base_ms_spring + 1000 * 60 * 80; x += 1000) {
  85         dst_data_spring.push([new Date(x), x]);
  86       }
  87
  88       g4 = new Dygraph(
  89           document.getElementById("chart4"),
  90           dst_data_spring,
  91           { width: 1024, labels: ['Date', 'Value'] }
  92       );
  93
  94     </script>
  95 </body>
  96 </html>