[dygraphs.git] / tests / is-zoomed.html

<html>
  <head>
    <title>isZoomedIgnoresProgrammaticZoom Flag</title>
    <!--
    For production (minified) code, use:
    <script type="text/javascript" src="dygraph-combined.js"></script>
    -->
    <script type="text/javascript" src="../dygraph-dev.js"></script>

    <script type="text/javascript" src="data.js"></script>
  </head>
  <body>
    <h1 id="zoom">Determining Zoom</h1>
    <p>
      It is possible to detect whether a chart has been zoomed in either axis by the use of the <code>isZoomed</code> function.
      If called with no argument, it will report whether <em>either</em> axis has been zoomed.
      Alternatively it can be called with an argument of either <code>'x'</code> or <code>'y'</code> and it will report the status of just that axis.
    </p>
  
    <p>Here's a simple example using <code>drawCallback</code> to display the various zoom states whenever the chart is zoomed:</p>
  
    <div style="width:600px; text-align:center; font-weight: bold; font-size: 125%;">OUTPUT</div>
    <div style="width: 750px">
      <div style="float: right">
        <p>Zoomed: <span id="zoomed">False</span><p/>
        <p>Zoomed X: <span id="zoomedX">False</span><p/>
        <p>Zoomed Y: <span id="zoomedY">False</span><p/>
      </div>
      <div class="codeoutput" style="float:left;">
      <div id="zoomdiv"></div>
      <script type="text/javascript">
        var g = new Dygraph(
  
        // containing div
        document.getElementById("zoomdiv"),
  
        // CSV or path to a CSV file.
        "Date,Value\n" +
        "2011-01-07,75\n" +
        "2011-01-08,70\n" +
        "2011-01-09,90\n" +
        "2011-01-10,30\n" +
        "2011-01-11,40\n" +
        "2011-01-12,60\n" +
        "2011-01-13,70\n" +
        "2011-01-14,40\n",
        {
          drawCallback: function(me, initial) {
          document.getElementById("zoomed").innerHTML = "" + me.isZoomed();
          document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x");
          document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y");
          }
        }
        );
      </script>
      </div>
    </div>
  
    <p>
      <div style="clear:both; width:600px; text-align:center; font-weight: bold; font-size: 125%;">HTML</div>

<pre>
  new Dygraph(

  // containing div
  document.getElementById(&quot;zoomdiv&quot;),

  // CSV or path to a CSV file.
  &quot;Date,Temperature\n&quot; +
  &quot;2011-01-07,75\n&quot; +
  &quot;2011-01-08,70\n&quot; +
  &quot;2011-01-09,90\n&quot; +
  &quot;2011-01-10,30\n&quot; +
  &quot;2011-01-11,40\n&quot; +
  &quot;2011-01-12,60\n&quot; +
  &quot;2011-01-13,70\n&quot; +
  &quot;2011-01-14,40\n&quot;,
  {
    drawCallback: function(me, initial) {
    document.getElementById(&quot;zoomed&quot;).innerHTML = &quot;&quot; + me.isZoomed();
    document.getElementById(&quot;zoomedX&quot;).innerHTML = &quot;&quot; + me.isZoomed(&quot;x&quot;);
    document.getElementById(&quot;zoomedY&quot;).innerHTML = &quot;&quot; + me.isZoomed(&quot;y&quot;);
    }
  }
  );
</pre>
    </p>
  
    <p>The <a href="zoom.html">Tests for zoom operations</a> show a full example of this in action.</p>
  
    <h3>Programmatic Zoom</h3>
    <p>
      When a chart is programmatically zoomed by updating either the <code>dateWindow</code>
      or <code>valueRange</code> option, by default the zoomed flags are also updated correspondingly.
      It is possible to prevent this by specifying the <code>isZoomedIgnoreProgrammaticZoom</code> in the same
      call to the <code>updateOptions</code> method.
    </p>
    <p>
      The <a href="tests/is-zoomed-ignore-programmatic-zoom.html">is-zoomed-ignore-programmatic-zoom</a> test shows this in operation.
    </p>
  </body>
</html>
Commit	Line	Data
e5152598	1	<html>
36dfa958	2	<head>
36dfa958	3	<title>isZoomedIgnoresProgrammaticZoom Flag</title>
7e5ddc94 DV	4	<!--
	5	For production (minified) code, use:
	6	<script type="text/javascript" src="dygraph-combined.js"></script>
	7	-->
	8	<script type="text/javascript" src="../dygraph-dev.js"></script>
	9
36dfa958 DV	10	<script type="text/javascript" src="data.js"></script>
	11	</head>
	12	<body>
	13	<h1 id="zoom">Determining Zoom</h1>
	14	<p>
	15	It is possible to detect whether a chart has been zoomed in either axis by the use of the <code>isZoomed</code> function.
	16	If called with no argument, it will report whether <em>either</em> axis has been zoomed.
	17	Alternatively it can be called with an argument of either <code>'x'</code> or <code>'y'</code> and it will report the status of just that axis.
	18	</p>
	19
	20	<p>Here's a simple example using <code>drawCallback</code> to display the various zoom states whenever the chart is zoomed:</p>
	21
	22	<div style="width:600px; text-align:center; font-weight: bold; font-size: 125%;">OUTPUT</div>
	23	<div style="width: 750px">
	24	<div style="float: right">
	25	<p>Zoomed: <span id="zoomed">False</span><p/>
	26	<p>Zoomed X: <span id="zoomedX">False</span><p/>
	27	<p>Zoomed Y: <span id="zoomedY">False</span><p/>
	28	</div>
	29	<div class="codeoutput" style="float:left;">
	30	<div id="zoomdiv"></div>
	31	<script type="text/javascript">
f6fbf9e0	32	var g = new Dygraph(
36dfa958 DV	33
	34	// containing div
	35	document.getElementById("zoomdiv"),
	36
	37	// CSV or path to a CSV file.
	38	"Date,Value\n" +
	39	"2011-01-07,75\n" +
	40	"2011-01-08,70\n" +
	41	"2011-01-09,90\n" +
	42	"2011-01-10,30\n" +
	43	"2011-01-11,40\n" +
	44	"2011-01-12,60\n" +
	45	"2011-01-13,70\n" +
	46	"2011-01-14,40\n",
	47	{
	48	drawCallback: function(me, initial) {
	49	document.getElementById("zoomed").innerHTML = "" + me.isZoomed();
	50	document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x");
	51	document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y");
	52	}
	53	}
	54	);
	55	</script>
	56	</div>
	57	</div>
	58
	59	<p>
	60	<div style="clear:both; width:600px; text-align:center; font-weight: bold; font-size: 125%;">HTML</div>
e5152598 NN	61
	62	<pre>
	63	new Dygraph(
	64
36dfa958 DV	65	// containing div
36dfa958 DV	66	document.getElementById("zoomdiv"),
e5152598	67
36dfa958 DV	68	// CSV or path to a CSV file.
	69	"Date,Temperature\n" +
	70	"2011-01-07,75\n" +
	71	"2011-01-08,70\n" +
	72	"2011-01-09,90\n" +
	73	"2011-01-10,30\n" +
	74	"2011-01-11,40\n" +
	75	"2011-01-12,60\n" +
	76	"2011-01-13,70\n" +
	77	"2011-01-14,40\n",
	78	{
	79	drawCallback: function(me, initial) {
	80	document.getElementById("zoomed").innerHTML = "" + me.isZoomed();
	81	document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x");
	82	document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y");
e5152598	83	}
36dfa958	84	}
e5152598 NN	85	);
e5152598 NN	86	</pre>
36dfa958 DV	87	</p>
36dfa958 DV	88
48e614ac	89	<p>The <a href="zoom.html">Tests for zoom operations</a> show a full example of this in action.</p>
36dfa958 DV	90
	91	<h3>Programmatic Zoom</h3>
	92	<p>
	93	When a chart is programmatically zoomed by updating either the <code>dateWindow</code>
	94	or <code>valueRange</code> option, by default the zoomed flags are also updated correspondingly.
	95	It is possible to prevent this by specifying the <code>isZoomedIgnoreProgrammaticZoom</code> in the same
	96	call to the <code>updateOptions</code> method.
	97	</p>
	98	<p>
	99	The <a href="tests/is-zoomed-ignore-programmatic-zoom.html">is-zoomed-ignore-programmatic-zoom</a> test shows this in operation.
	100	</p>
	101	</body>
e5152598	102	</html>