tests/highlighted-region.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
   5     <title>Highlighted Region</title>
   6     <!--[if IE]>
   7     <script type="text/javascript" src="../excanvas.js"></script>
   8     <![endif]-->
   9     <script type="text/javascript" src="../strftime/strftime-min.js"></script>
  10     <script type="text/javascript" src="../rgbcolor/rgbcolor.js"></script>
  11     <script type="text/javascript" src="../dygraph-canvas.js"></script>
  12     <script type="text/javascript" src="../dygraph.js"></script>
  13     <script type="text/javascript" src="data.js"></script>
  14   </head>
  15   <body>
  16     <p>Should draw a time series with an unusual region highlighted:</p>
  17     <div id="div_g" style="width:600px; height:300px;"></div>
  18
  19     <p>When you zoom/pan, the region should remain highlighted.</p>
  20
  21     <script type="text/javascript">
  22       // A basic sinusoidal data series.
  23       var data = [];
  24       for (var i = 0; i < 1000; i++) {
  25         var base = 10 * Math.sin(i / 90.0);
  26         data.push([i, base, base + Math.sin(i / 2.0)]);
  27       }
  28
  29       // Shift one portion out of line.
  30       var highlight_start = 450;
  31       var highlight_end = 500;
  32       for (var i = highlight_start; i <= highlight_end; i++) {
  33         data[i][2] += 5.0;
  34       }
  35
  36
  37       new Dygraph(
  38           document.getElementById("div_g"),
  39           data,
  40           {
  41             labels: ['X', 'Est.', 'Actual'],
  42             underlayCallback: function(canvas, area, g) {
  43               var bottom_left = g.toDomCoords(highlight_start, -20);
  44               var top_right = g.toDomCoords(highlight_end, +20);
  45
  46               var left = bottom_left[0];
  47               var right = top_right[0];
  48
  49               canvas.fillStyle = "rgba(255, 255, 102, 1.0)";
  50               canvas.fillRect(left, area.y, right - left, area.h);
  51             }
  52
  53           }
  54       );
  55     </script>
  56   </body>
  57 </html>