tests/link-interaction.html

   1 <html>
   2   <head>
   3     <title>noise</title>
   4     <!--[if IE]>
   5     <script type="text/javascript" src="excanvas.js"></script>
   6     <![endif]-->
   7     <script type="text/javascript" src="../dygraph-combined.js"></script>
   8     <script type="text/javascript" src="../dygraph-canvas.js"></script>
   9     <script type="text/javascript" src="../dygraph.js"></script>
  10   </head>
  11   <body>
  12     <div id="div_g"></div>
  13     <b>Zoom:</b>
  14       <a href="#" onclick="zoom(3600)">hour</a>
  15       <a href="#" onclick="zoom(86400)">day</a>
  16       <a href="#" onclick="zoom(604800)">week</a>
  17       <a href="#" onclick="zoom(30 * 86400)">month</a>
  18       <a href="#" onclick="reset()">full</a>
  19     <b>Pan:</b>
  20       <a href="#" onclick="pan(-1)">left</a>
  21       <a href="#" onclick="pan(+1)">right</a>
  22
  23     <script type="text/javascript">
  24       var r = [ ];
  25       var base_time = Date.parse("2008/07/01");
  26       var num = 24 * 0.25 * 365;
  27       for (var i = 0; i < num; i++) {
  28         r.push([ new Date(base_time + i * 3600 * 1000),
  29                  i + 50 * (i % 60),        // line
  30                  i * (num - i) * 4.0 / num  // parabola
  31                ]);
  32       }
  33       var orig_range = [ r[0][0].valueOf(), r[r.length - 1][0].valueOf() ];
  34       g = new Dygraph(
  35             document.getElementById("div_g"),
  36             r, {
  37               rollPeriod: 7,
  38               // errorBars: true,
  39               width: 600,
  40               height: 300,
  41               labels: ["Date", "a", "b"]
  42             }
  43           );
  44
  45       var desired_range = null;
  46       function approach_range() {
  47         if (!desired_range) return;
  48         // go halfway there
  49         var range = g.xAxisRange();
  50         if (Math.abs(desired_range[0] - range[0]) < 60 &&
  51             Math.abs(desired_range[1] - range[1]) < 60) {
  52           g.updateOptions({dateWindow: desired_range});
  53           // (do not set another timeout.)
  54         } else {
  55           var new_range;
  56           new_range = [0.5 * (desired_range[0] + range[0]),
  57                        0.5 * (desired_range[1] + range[1])];
  58           g.updateOptions({dateWindow: new_range});
  59           animate();
  60         }
  61       }
  62       function animate() {
  63         setTimeout(approach_range, 50);
  64       }
  65
  66       function zoom(res) {
  67         var w = g.xAxisRange();
  68         desired_range = [ w[0], w[0] + res * 1000 ];
  69         animate();
  70       }
  71
  72       function reset() {
  73         desired_range = orig_range;
  74         animate();
  75       }
  76
  77       function pan(dir) {
  78         var w = g.xAxisRange();
  79         var scale = w[1] - w[0];
  80         var amount = scale * 0.25 * dir;
  81         desired_range = [ w[0] + amount, w[1] + amount ];
  82         animate();
  83       }
  84     </script>
  85   </body>
  86 </html>