tests/logscale.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <link rel="stylesheet" href="../dist/dygraph.css">
   5     <title>log scale</title>
   6     <script type="text/javascript" src="../dist/dygraph.js"></script>
   7
   8   </head>
   9
  10   <body>
  11     <center>
  12       <input id='ylog' type="button" value="y log scale" onclick="setLogScale('y', true)">
  13       <input id='ylinear' type="button" value="y linear scale" onclick="setLogScale('y', false)">
  14       <input id='xlog' type="button" value="x log scale" onclick="setLogScale('x', true)">
  15       <input id='xlinear' type="button" value="x linear scale" onclick="setLogScale('x', false)">
  16       <div>Current scales: <span id="description"></span></div>
  17     </center>
  18
  19     <h2>X axis of dates</h2>
  20     <div id="div_g0" style="width:600px; height:300px;"></div>
  21     <div style="font-style: italic; margin-left: 40px;">(Note: when the x-axis is dates, logscale is ignored on that axis.)</div>
  22
  23     <h2>X axis of numbers</h2>
  24     <div id="div_g1" style="width:600px; height:300px;"></div>
  25
  26     <script type="text/javascript">
  27       function data0() {
  28         return "Date,A\n" +
  29         "20101201,5\n"+
  30         "20101202,10\n"+
  31         "20101203,-1\n"+
  32         "20101204,250\n"+
  33         "20101205,1000\n"+
  34         "20101206,30\n"+
  35         "20101207,80\n"+
  36         "20101208,100\n"+
  37         "20101209,500\n"+
  38         "";
  39       };
  40       function data1() {
  41         return "X,A\n" +
  42         "1,0.000001\n"+
  43         "2,10\n"+
  44         "3,100\n"+
  45         "4,250\n"+
  46         "5,1000\n"+
  47         "6,30\n"+
  48         "7,0\n"+
  49         "8,100\n"+
  50         "9,500\n"+
  51         "30,500\n"+
  52         "50,400\n"+
  53         "100,300\n"+
  54         "101,500\n"+
  55         "300,200\n"+
  56         "1000,100\n"+
  57         "";
  58       };
  59
  60       var g0 = new Dygraph(document.getElementById("div_g0"), data0, {});
  61       var g1 = new Dygraph(document.getElementById("div_g1"), data1, {});
  62       var graphs = [ g0, g1 ];
  63       var scales = { x : false, y : false };
  64       function setLogScale(axis, val) {
  65         if (axis === 'y') {
  66           for (var idx = 0; idx < graphs.length; idx++) {
  67             graphs[idx].updateOptions({ logscale: val });
  68           }
  69         } else {
  70           for (var idx = 0; idx < graphs.length; idx++) {
  71             graphs[idx].updateOptions({ axes : { x : {  logscale : val } } });
  72           }
  73         }
  74         scales[axis] = val;
  75         var text = "y: " + (scales.y ? "log" : "linear") + ", x: " + (scales.x ? "log" : "linear");
  76         document.getElementById("description").innerText = text;
  77       }
  78
  79       setLogScale('y', true);
  80     </script>
  81
  82   </body>
  83 </html>