tests/link-interaction.html

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