tests/annotation.html

   1 <html>
   2   <head>
   3     <title>demo</title>
   4     <!--[if IE]>
   5     <script type="text/javascript" src="excanvas.js"></script>
   6     <![endif]-->
   7     <script type="text/javascript" src="../strftime/strftime-min.js"></script>
   8     <script type="text/javascript" src="../rgbcolor/rgbcolor.js"></script>
   9     <script type="text/javascript" src="../dygraph-canvas.js"></script>
  10     <script type="text/javascript" src="../dygraph.js"></script>
  11     <style type="text/css">
  12     .annotation {
  13       background-color: #dddddd
  14     }
  15     </style>
  16   </head>
  17   <body>
  18     <div style="position:absolute; left:100px; top: 200px;" id="g"></div>
  19     <div style="position:absolute; left:600px; top: 200px;" id="list"></div>
  20
  21     <script type="text/javascript">
  22       g = new DateGraph(
  23               document.getElementById("g"),
  24               function() {
  25                 var zp = function(x) { if (x < 10) return "0"+x; else return x; };
  26                 var r = "date,parabola,line,another line,sine wave\n";
  27                 for (var i=1; i<=31; i++) {
  28                 r += "200610" + zp(i);
  29                 r += "," + 10*(i*(31-i));
  30                 r += "," + 10*(8*i);
  31                 r += "," + 10*(250 - 8*i);
  32                 r += "," + 10*(125 + 125 * Math.sin(0.3*i));
  33                 r += "\n";
  34                 }
  35                 return r;
  36               },
  37               {
  38                 rollPeriod: 1,
  39                 showRoller: true,
  40                 width: 480,
  41                 height: 320,
  42                 drawCallback: function(g) {
  43                   var ann = g.annotations();
  44                   var html = "";
  45                   for (var i = 0; i < ann.length; i++) {
  46                     html += "(" + ann[i].series + ", " + ann[i].x + "): " + ann[i].shortText + " -> " + ann[i].text + "<br/>";
  47                   }
  48                   document.getElementById("list").innerHTML = html;
  49                 },
  50               }
  51           );
  52
  53       var last_ann = 0;
  54       annotations = [];
  55       for (var x = 10; x < 15; x += 2) {
  56         annotations.push( {
  57           series: 'sine wave',
  58           x: "200610" + x,
  59           shortText: x,
  60           text: 'Stock Market Crash ' + x
  61         } );
  62         last_ann = x;
  63       }
  64       annotations.push( {
  65         series: 'another line',
  66         x: "20061013",
  67         shortText: 'X',
  68         text: 'Another one',
  69         cssClass: 'annotation'
  70       } );
  71       g.setAnnotations(annotations);
  72
  73       function add() {
  74         var x = last_ann + 2;
  75         var annnotations = g.annotations();
  76         annotations.push( {
  77           series: 'line',
  78           x: "200610" + x,
  79           shortText: x,
  80           text: 'Line ' + x
  81         } );
  82         last_ann = x;
  83         g.setAnnotations(annotations);
  84       }
  85     </script>
  86
  87     <input type="button" value="Add Annotation" onclick="add()" />
  88 </body>
  89 </html>