tests/labelsDateUTC.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../css/dygraph.css">
   5     <title>UTC date labels</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   </head>
  12   <body>
  13
  14     <h2>UTC date and time labels</h2>
  15
  16     <p>This shows how date ticks and labels may be generated according to local
  17     time (default) or UTC with the option <code>labelsUTC</code>.</p>
  18
  19     <p>72 hours of random hourly data since 2009-Jul-23 18:00 UTC
  20     according to local time (top) and UTC (bottom):</p>
  21
  22     <div id="div_loc" style="width:600px; height:200px;"></div>
  23     <div id="div_utc" style="width:600px; height:200px;"></div>
  24
  25     <p>Please note the offset between the respective ticks in both plots.
  26     It should match your local time zone offset.</p>
  27
  28     <p>You can also check it by hovering over corresponding points and comparing
  29     the value labels.</p>
  30
  31     <p>Try different zoom levels to show that ticks are always placed at nice
  32     time boundaries.</p>
  33
  34     <script type="text/javascript">
  35       var data = (function() {
  36         var rand10 = function () { return Math.round(10 * Math.random()); };
  37         var a = []
  38         for (var y = 2009, m = 6, d = 23, hh = 18, n=0; n < 72; n++) {
  39           a.push([new Date(Date.UTC(y, m, d, hh + n, 0, 0)), rand10()]);
  40         }
  41         return a;
  42       })();
  43       gloc = new Dygraph(
  44                    document.getElementById("div_loc"),
  45                    data,
  46                    {
  47                      labels: ['local time', 'random']
  48                    }
  49                  );
  50       gutc = new Dygraph(
  51                    document.getElementById("div_utc"),
  52                    data,
  53                    {
  54                      labelsUTC: true,
  55                      labels: ['UTC', 'random']
  56                    }
  57                  );
  58     </script>
  59
  60   </body>
  61 </html>