tests/dynamic-update.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <title>Live random data</title>
   5     <!--
   6     For production (minified) code, use:
   7     <script type="text/javascript" src="dygraph-combined.js"></script>
   8     -->
   9     <script type="text/javascript" src="../dist/dygraph.js"></script>
  10
  11   </head>
  12   <body>
  13     <h3 style="width:800px; text-align: center;">Live random data</h3>
  14     <div id="div_g" style="width:800px; height:400px;"></div>
  15
  16     <script type="text/javascript">
  17       var data = [];
  18       var t = new Date();
  19       for (var i = 10; i >= 0; i--) {
  20         var x = new Date(t.getTime() - i * 1000);
  21         data.push([x, Math.random()]);
  22       }
  23
  24       var g = new Dygraph(document.getElementById("div_g"), data,
  25                           {
  26                             drawPoints: true,
  27                             showRoller: true,
  28                             valueRange: [0.0, 1.2],
  29                             labels: ['Time', 'Random']
  30                           });
  31       setInterval(function() {
  32         var x = new Date();  // current time
  33         var y = Math.random();
  34         data.push([x, y]);
  35         g.updateOptions( { 'file': data } );
  36       }, 1000);
  37
  38     </script>
  39
  40     <p>This test is modeled after a <a
  41       href="http://www.highcharts.com/demo/?example=dynamic-update&theme=default">highcharts
  42       test</a>. New points should appear once per second. Try zooming and
  43     panning over to the right edge to watch them show up.</p>
  44   </body>
  45 </html>