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 style="float: right">
  20         <p>Zoomed: <span id="zoomed">False</span><p/>
  21         <p>Zoomed X: <span id="zoomedX">False</span><p/>
  22         <p>Zoomed Y: <span id="zoomedY">False</span><p/>
  23     </div>
  24     <div id="div_g" style="width:600px; height:300px;"></div>
  25
  26
  27     <p><b>Zoom operations:</b></p>
  28     <p>
  29       <input type="button" value="Y (3,5)" onclick="zoomGraphY(3,5)">&nbsp;
  30       <input type="button" value="Y (0,4)" onclick="zoomGraphY(0,4)">&nbsp;
  31       <input type="button" value="Y (2,4)" onclick="zoomGraphY(2,4)">&nbsp;
  32       <input type="button" value="Y (0,2)" onclick="zoomGraphY(0,2)">&nbsp;
  33       <input type="button" value="Y (0,1)" onclick="zoomGraphY(0,1)">&nbsp;
  34       <br>
  35       <input type="button" value="Oct 8-13" onclick="zoomGraphX(1160261979962, 1163905694248)">&nbsp;
  36       <input type="button" value="Oct 22-28" onclick="zoomGraphX(1161489164461 , 1162008465957)">&nbsp;
  37       <input type="button" value="Oct 23-24" onclick="zoomGraphX(1161575878860, 1161660991675)">&nbsp;
  38       <input type="button" value="Oct 26 6AM-noon" onclick="zoomGraphX(1161770537840, 1161792063332)">&nbsp;
  39       <br>
  40       <input type="button" value="Unzoom" onclick="unzoomGraph()">&nbsp;
  41       </p>
  42
  43
  44     <script type="text/javascript">
  45       g = new Dygraph(
  46             document.getElementById("div_g"),
  47             NoisyData, {
  48               errorBars: true,
  49               zoomCallback : function(minDate, maxDate, yRange) {
  50                 showDimensions(minDate, maxDate, yRange);
  51               },
  52               drawCallback: function(me, initial) {
  53                 document.getElementById("zoomed").innerHTML = "" + me.isZoomed();
  54                 document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x");
  55                 document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y");
  56               }
  57             }
  58           );
  59
  60       // TODO(konigsberg): Implement a visualization that verifies that initial
  61       // displays also show correctly.
  62
  63       // Pull an initial value for logging.
  64       var minDate = g.xAxisRange()[0];
  65       var maxDate = g.xAxisRange()[1];
  66       var minValue = g.yAxisRange()[0];
  67       var maxValue = g.yAxisRange()[1];
  68       showDimensions(minDate, maxDate, [minValue, maxValue]);
  69
  70       function showDimensions(minDate, maxDate, yRanges) {
  71         showXDimensions(minDate, maxDate);
  72         showYDimensions(yRanges);
  73       }
  74
  75       function showXDimensions(first, second) {
  76         var elem = document.getElementById("xdimensions");
  77         elem.innerHTML = "dateWindow : [" + first + ", "+ second + "]";
  78       }
  79
  80       function showYDimensions(ranges) {
  81         var elem = document.getElementById("ydimensions");
  82         elem.innerHTML = "valueRange : [" + ranges + "]";
  83       }
  84
  85       function zoomGraphX(minDate, maxDate) {
  86         g.updateOptions({
  87           dateWindow: [minDate, maxDate]
  88         });
  89         showXDimensions(minDate, maxDate);
  90       }
  91
  92       function zoomGraphY(minValue, maxValue) {
  93         g.updateOptions({
  94           valueRange: [minValue, maxValue]
  95         });
  96         showYDimensions(g.yAxisRanges());
  97       }
  98
  99       function unzoomGraph() {
 100         g.updateOptions({
 101           dateWindow: null,
 102           valueRange: null
 103         });
 104       }
 105     </script>
 106
 107   </body>
 108 </html>