tests/zoom.html

   1 <html>
   2   <head>
   3     <title>zoom</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     <script type="text/javascript" src="data.js"></script>
  12   </head>
  13   <body>
  14     <h3>Click the buttons to change the zoom level or just use the normal
  15     click-and drag. While zoom typically works by click-and-drag, the
  16     buttons are useful for testing.</h3>
  17     <h4>Window coordinates (in dates and values):</h4>
  18     <div id="xdimensions"></div> <div id="ydimensions"></div>
  19     <div id="div_g" style="width:600px; height:300px;"></div>
  20
  21     <p><b>Zoom operations:</b></p>
  22     <p>
  23       <input type="button" value="Y (3,5)" onclick="zoomGraphY(3,5)">&nbsp;
  24       <input type="button" value="Y (0,4)" onclick="zoomGraphY(0,4)">&nbsp;
  25       <input type="button" value="Y (2,4)" onclick="zoomGraphY(2,4)">&nbsp;
  26       <input type="button" value="Y (0,2)" onclick="zoomGraphY(0,2)">&nbsp;
  27       <input type="button" value="Y (0,1)" onclick="zoomGraphY(0,1)">&nbsp;
  28       <br>
  29       <input type="button" value="Oct 8-13" onclick="zoomGraphX(1160261979962, 1163905694248)">&nbsp;
  30       <input type="button" value="Oct 22-28" onclick="zoomGraphX(1161489164461 , 1162008465957)">&nbsp;
  31       <input type="button" value="Oct 23-24" onclick="zoomGraphX(1161575878860, 1161660991675)">&nbsp;
  32       <input type="button" value="Oct 26 6AM-noon" onclick="zoomGraphX(1161770537840, 1161792063332)">&nbsp;
  33       <br>
  34       <input type="button" value="Unzoom" onclick="unzoomGraph()">&nbsp;
  35       </p>
  36
  37
  38     <script type="text/javascript">
  39       g = new Dygraph(
  40             document.getElementById("div_g"),
  41             NoisyData, {
  42               zoomCallback : function(a,b,c,d) { showDimensions(a,b,c,d); }
  43             }
  44           );
  45
  46       // TODO(konigsberg): Implement a visualization that verifies that initial
  47       // displays also show correctly.
  48
  49       // Pull an initial value for logging.
  50       var minDate = g.xAxisRange()[0];
  51       var maxDate = g.xAxisRange()[1];
  52       var minValue = g.yAxisRange()[0];
  53       var maxValue = g.yAxisRange()[1];
  54       showDimensions(minDate, maxDate, minValue, maxValue);
  55
  56       function showDimensions(minDate, maxDate, minValue, maxValue) {
  57         showXDimensions(minDate, maxDate);
  58         showYDimensions(minValue, maxValue);
  59       }
  60
  61       function showXDimensions(first, second) {
  62         var elem = document.getElementById("xdimensions");
  63         elem.innerHTML = "dateWindow : [" + first + ", "+ second + "]";
  64       }
  65
  66       function showYDimensions(first, second) {
  67         var elem = document.getElementById("ydimensions");
  68         elem.innerHTML = "valueRange : [" + first + ", "+ second + "]";
  69       }
  70
  71       function zoomGraphX(minDate, maxDate) {
  72         g.updateOptions({
  73           dateWindow: [minDate, maxDate]
  74         });
  75             showXDimensions(minDate, maxDate);
  76       }
  77
  78       function zoomGraphY(minValue, maxValue) {
  79         g.updateOptions({
  80           valueRange: [minValue, maxValue]
  81         });
  82             showYDimensions(minValue, maxValue);
  83       }
  84
  85       function unzoomGraph() {
  86         g.updateOptions({
  87           dateWindow: undefined,
  88           valueRange: undefined
  89         });
  90       }
  91     </script>
  92
  93   </body>
  94 </html>