tests/link-interaction.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
   5     <title>noise</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   </head>
  14   <body>
  15     <div id="div_g"></div>
  16     <b>Zoom:</b>
  17       <a href="#" onclick="zoom(3600)">hour</a>
  18       <a href="#" onclick="zoom(86400)">day</a>
  19       <a href="#" onclick="zoom(604800)">week</a>
  20       <a href="#" onclick="zoom(30 * 86400)">month</a>
  21       <a href="#" onclick="reset()">full</a>
  22     <b>Pan:</b>
  23       <a href="#" onclick="pan(-1)">left</a>
  24       <a href="#" onclick="pan(+1)">right</a>
  25
  26     <script type="text/javascript">
  27       var r = [ ];
  28       var base_time = Date.parse("2008/07/01");
  29       var num = 24 * 0.25 * 365;
  30       for (var i = 0; i < num; i++) {
  31         r.push([ new Date(base_time + i * 3600 * 1000),
  32                  i + 50 * (i % 60),        // line
  33                  i * (num - i) * 4.0 / num  // parabola
  34                ]);
  35       }
  36       var orig_range = [ r[0][0].valueOf(), r[r.length - 1][0].valueOf() ];
  37       g = new Dygraph(
  38             document.getElementById("div_g"),
  39             r, {
  40               rollPeriod: 7,
  41               // errorBars: true,
  42               width: 600,
  43               height: 300,
  44               labels: ["Date", "a", "b"]
  45             }
  46           );
  47
  48       var desired_range = null;
  49       function approach_range() {
  50         if (!desired_range) return;
  51         // go halfway there
  52         var range = g.xAxisRange();
  53         if (Math.abs(desired_range[0] - range[0]) < 60 &&
  54             Math.abs(desired_range[1] - range[1]) < 60) {
  55           g.updateOptions({dateWindow: desired_range});
  56           // (do not set another timeout.)
  57         } else {
  58           var new_range;
  59           new_range = [0.5 * (desired_range[0] + range[0]),
  60                        0.5 * (desired_range[1] + range[1])];
  61           g.updateOptions({dateWindow: new_range});
  62           animate();
  63         }
  64       }
  65       function animate() {
  66         setTimeout(approach_range, 50);
  67       }
  68
  69       function zoom(res) {
  70         var w = g.xAxisRange();
  71         desired_range = [ w[0], w[0] + res * 1000 ];
  72         animate();
  73       }
  74
  75       function reset() {
  76         desired_range = orig_range;
  77         animate();
  78       }
  79
  80       function pan(dir) {
  81         var w = g.xAxisRange();
  82         var scale = w[1] - w[0];
  83         var amount = scale * 0.25 * dir;
  84         desired_range = [ w[0] + amount, w[1] + amount ];
  85         animate();
  86       }
  87     </script>
  88   </body>
  89 </html>