tests/highlighted-region.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../dist/dygraph.css">
   5     <title>Highlighted Region</title>
   6     <script type="text/javascript" src="../dist/dygraph.js"></script>
   7
   8     <script type="text/javascript" src="data.js"></script>
   9   </head>
  10   <body>
  11     <p>Should draw a time series with an unusual region highlighted:</p>
  12     <div id="div_g" style="width:600px; height:300px;"></div>
  13
  14     <p>When you zoom/pan, the region should remain highlighted.</p>
  15
  16     <script type="text/javascript">
  17       // A basic sinusoidal data series.
  18       var data = [];
  19       for (var i = 0; i < 1000; i++) {
  20         var base = 10 * Math.sin(i / 90.0);
  21         data.push([i, base, base + Math.sin(i / 2.0)]);
  22       }
  23
  24       // Shift one portion out of line.
  25       var highlight_start = 450;
  26       var highlight_end = 500;
  27       for (var i = highlight_start; i <= highlight_end; i++) {
  28         data[i][2] += 5.0;
  29       }
  30
  31
  32       var g = new Dygraph(
  33           document.getElementById("div_g"),
  34           data,
  35           {
  36             labels: ['X', 'Est.', 'Actual'],
  37             animatedZooms: true,
  38             underlayCallback: function(canvas, area, g) {
  39               var bottom_left = g.toDomCoords(highlight_start, -20);
  40               var top_right = g.toDomCoords(highlight_end, +20);
  41
  42               var left = bottom_left[0];
  43               var right = top_right[0];
  44
  45               canvas.fillStyle = "rgba(255, 255, 102, 1.0)";
  46               canvas.fillRect(left, area.y, right - left, area.h);
  47             }
  48
  49           }
  50       );
  51     </script>
  52   </body>
  53 </html>