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+
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+ <a href="http://github.com/danvk/dygraphs"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://a248.e.akamai.net/assets.github.com/img/71eeaab9d563c2b3c590319b398dd35683265e85/687474703a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f677261795f3664366436642e706e67" alt="Fork me on GitHub"></a>
+
<div id="nav">
<h2>Documentation</h2>
<ul>
<li><a href="#gviz">GViz Data</a></li>
<li><a href="#baseball">Baseball chart</a></li>
<li><a href="#stock">Stock chart</a></li>
- <li><a href="#options">Options Reference</a></li>
+ <li><a href="#gwt">GWT Compatibility</a></li>
<li><a href="#policy">Data Policy</a></li>
+ <li><a href="options.html">Options Reference</a></li>
+ <li><a href="jsdoc/symbols/Dygraph.html">JSDoc Reference</a></li>
+ <li><a href="data.html">Data Formats</a></li>
+ <li><a href="annotations.html">Annotations</a></li>
</ul>
<h2>Project</h2>
<ul>
+ <li><a href="http://blog.dygraphs.com/">Blog</a></li>
<li><a href="http://github.com/danvk/dygraphs">Source</a></li>
<li><a href="http://code.google.com/p/dygraphs/issues/">Issues</a></li>
<li><a href="http://code.google.com/p/dygraphs/issues/entry">Report Bug</a></li>
+ <li><a href="changes.html">Contribute a change</a></li>
<li><a href="mailto:dygraphs-users [at] googlegroups.com">Contact</a></li>
</ul>
- <h2>Gallery</h2>
+ <h2>Demos/Usage</h2>
<ul>
+ <li><a href="#gallery">Usage Gallery</a></li>
+ <hr/>
+ <li><a href="tests/">(browse demos)</a></li>
<li><a href="tests/demo.html">Basic Demo</a></li>
<li><a href="tests/gviz.html">GViz Demo</a></li>
<li><a href="tests/plotter.html">Equation Plotter</a></li>
<li><a href="tests/perf.html">Performance Test</a></li>
+ <li><a href="tests/annotation.html">Annotations</a></li>
+ <li><a href="tests/annotation-gviz.html">Annotations (GViz)</a></li>
<li><a href="tests/fillGraph.html">Filled Chart</a></li>
<li><a href="tests/perf.html">Fractions</a></li>
<li><a href="tests/visibility.html">Visibility</a></li>
<li><a href="tests/negative.html">Negative Numbers</a></li>
<li><a href="tests/noise.html">Noisy Data</a></li>
<li><a href="tests/two-series.html">Multiple Series</a></li>
- <li><a href="tests/underlay-callback.html">Custom Underlay / background</a></li>
+ <li><a href="tests/highlighted-region.html">Custom Underlay / background</a></li>
+ <li><a href="tests/zoom.html">Tests for zoom operations</a></li>
+ <li><a href="tests/logscale.html">Log scale tests</a></li>
</ul>
</div>
<h1>dygraphs JavaScript Visualization Library</h1>
<p><a href="http://github.com/danvk/dygraphs">http://github.com/danvk/dygraphs</a></p>
- <p>See <a href="http://
groups.google.com/group/dygraphs-users">mailing list</a>, <a href="http://github.com/danvk/dygraphs/downloads/">downloads</a>, <a href="tests/">gallery</a> and <a href="http://code.google.com/p/dygraphs/issues/">open issues</a></p>
+ <p>See <a href="http://
blog.dygraphs.com/">blog</a>, <a href="http://groups.google.com/group/dygraphs-users">mailing list</a>, <a href="http://github.com/danvk/dygraphs/downloads/">downloads</a>, <a href="tests/">demos</a> and <a href="http://code.google.com/p/dygraphs/issues/">open issues</a></p>
<p>dygraphs is an open source JavaScript library that produces produces interactive, zoomable charts of time series. It is designed to display dense data sets and enable users to explore and interpret them.</p>
<p style="font-size:0.8em">(Mouse over to highlight individual values. Click and drag to zoom. Double-click to zoom back out. Change the number and hit enter to adjust the averaging period.)</p>
- <div id="title" style="width:800px; margin: 1em;text-align:center; font-weight: bold; font-size: 125%;">Temperatures in New York vs. San Francisco</div>
-
<div id="demodiv" style="width:800px; height:320px;"></div>
<script type="text/javascript">
g = new Dygraph(
rollPeriod: 14,
showRoller: true,
customBars: true,
- yAxisLabelWidth: 30
+ title: 'Daily Temperatures in New York vs. San Francisco',
+ ylabel: 'Temperature (F)',
+ legend: 'always',
+ labelsDivStyles: { 'textAlign': 'right' }
}
);
</script>
<p>dygraphs allows the user to explore the data and discover these facts.</p>
- <p>For more demos, browse the dygraph <a href="tests/">tests</a> directory.</p>
+ <p>For more demos, browse the dygraph <a href="tests/">tests</a>
+ directory. To see other people who are using dygraphs, check out the <a
+ href="#gallery">usage gallery</a>.</p>
<h3>Features</h3>
<p>Some of the features of dygraphs:</p>
<ul>
<li>Plots time series without using an external server or Flash</li>
<li>Works in Internet Explorer (using excanvas)</li>
- <li>Lightweight (45kb) and responsive</li>
- <li>Displays values on mouseover (this makes it easily discoverable)</li>
+ <li>Lightweight (69kb) and responsive</li>
+ <li>Displays values on mouseover, making interaction easily discoverable</li>
<li>Supports error bands around data series</li>
<li>Interactive zoom</li>
+ <li>Displays Annotations on the chart</li>
<li>Adjustable averaging period</li>
<li>Can intelligently chart fractions</li>
<li>Customizable click-through actions</li>
</head>
<body>
<div id="graphdiv4"
- style="width:600px; height:300px;"></div>
+ style="width:480px; height:320px;"></div>
<script type="text/javascript">
g4 = new Dygraph(
document.getElementById("graphdiv4"),
</div>
<div class="codeoutput" style="float:left;">
<h3 style="text-align:center">OUTPUT</h3>
- <div id="graphdiv4" style="width:600px; height:300px;"></div>
+ <div id="graphdiv4" style="width:480px; height:320px;"></div>
<script type="text/javascript">
g4 = new Dygraph(
document.getElementById("graphdiv4"),
<h2 id="ie">Internet Explorer Compatibility</h2>
- <p>The dygraphs library relies heavily on HTML's <code><canvas></code> tag, which Microsoft Internet Explorer does not support. Fortunately, some clever engineers created the <a href="http://code.google.com/p/explorercanvas/">excanvas</a> library, which implements the <code><canvas></code> tag in IE using VML.</p>
+ <p>The dygraphs library relies heavily on the HTML5 <code><canvas></code> tag, which Microsoft Internet Explorer did not traditionally support. To use Microsoft's native canvas implementation in IE9, you need to set an HTML5 doctype on your page:</p>
- <p>You can add IE support to any page using dygraphs by including the following in your page:</p>
+<pre>
+<!DOCTYPE html>
+</pre>
+
+ <p>When IE9 is in HTML5 mode, dygraphs works just like in other modern browsers.</p>
+
+ <p>If you want to support previous versions of Internet Explorer (IE6–IE8), you'll need to include the <a href="http://code.google.com/p/explorercanvas/">excanvas</a> library, which emulates the <code><canvas></code> tag using VML. You can add excanvas by including the following snippet:</p>
<pre>
-<head>
- <!--[if IE]><script src="excanvas.js"></script><![endif]-->
-</head>
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
+ <!--[if IE]><script src="path/to/excanvas.js"></script><![endif]-->
+ </head>
</pre>
- <p>This works quite well in practice. Charts are responsive, even under VML emulation.</p>
+<p>(This is surprisingly tricky because the HTML5 doctype breaks excanvas in IE8. See <a href="https://groups.google.com/group/dygraphs-users/browse_thread/thread/c60709e04bc7fe5f#">this discussion</a> for details.)</p>
+
+ <p>While VML emulation sounds like it would be slow, it works well in practice for most charts.</p>
<p>One common gotcha to look out for: make sure you don't have any trailing commas in parameter lists, e.g.</p>
<h2 id="gviz">GViz Data</h2>
- <p>The <a href="http://code.google.com/apis/visualization/documentation/index.html">Google Visualization API</a> provides a standard interface for describing data. Once you've specified your data using this API, you can plug in any GViz-compatible visualization. dygraphs is such a visualization.</p>
+ <p>The <a
+ href="http://code.google.com/apis/visualization/documentation/index.html">Google
+ Visualization API</a> provides a standard interface for describing data.
+ Once you've specified your data using this API, you can plug in any
+ GViz-compatible visualization. dygraphs is such a visualization. In
+ particular, it can be used as a drop-in replacement for the
+ AnnotatedTimeline visualization used on Google Finance and other sites. To
+ see how this works, check out the <a href="tests/annotation-gviz.html">gviz
+ annotation demo.</a></p>
<p>For a simple demonstration of how to use dygraphs a GViz visualization, see <a href="http://danvk.org/dygraphs/tests/gviz.html">http://danvk.org/dygraphs/tests/gviz.html</a>. dygraphs can also be used as a GViz gadget. This allows it to be embedded inside of a Google Spreadsheet. For a demonstration of this, see <a href="http://spreadsheets.google.com/ccc?key=0Anx1yCqeL8YUdDR1c3pPREhraGhkWmdhaURjOXRncXc&hl=en">this spreadsheet</a>. The URL for the gadget is <code><a href="http://danvk.org/dygraphs/gadget.xml">http://danvk.org/dygraphs/gadget.xml</a></code>.</p>
<p>This chart shows monthly closes of the Dow Jones Industrial Average, both in nominal and real (i.e. adjusted for inflation) dollars. The shaded areas show its monthly high and low. CPI values with a base from 1982-84 are used to adjust for inflation.</p>
- <div id="dow_chart" style="width:900px; height:350px;"></div>
+ <div id="dow_chart" style="width:750px; height:350px;"></div>
<p><b>Display: </b>
<input type=checkbox id=0 onClick="stockchange(this)" checked>
<label for="0"> Nominal</label>
<input type=checkbox id=1 onClick="stockchange(this)" checked>
<label for="1"> Real</label>
+ <input type=checkbox id=ann onClick="annotationschange(this)" checked>
+ <label for="ann"> Annotations</label>
</p>
<script type="text/javascript">
+ var stock_annotations = [
+ {
+ series: "Real",
+ x: "1929-08-15",
+ shortText: "A",
+ text: "1929 Stock Market Peak"
+ },
+ {
+ series: "Nominal",
+ x: "1987-08-15",
+ shortText: "B",
+ text: "1987 Crash"
+ },
+ {
+ series: "Nominal",
+ x: "1999-12-15",
+ shortText: "C",
+ text: "1999 (.com) Peak"
+ },
+ {
+ series: "Nominal",
+ x: "2007-10-15",
+ shortText: "D",
+ text: "All-Time Market Peak"
+ }
+ ];
+
// From http://www.econstats.com/eqty/eq_d_mi_3.csv
stockchart = new Dygraph(
document.getElementById('dow_chart'),
{
showRoller: true,
customBars: true,
- labelsKMB: true
+ labelsKMB: true,
+ drawCallback: function(g, is_initial) {
+ if (!is_initial) return;
+ g.setAnnotations( stock_annotations );
+ }
}
);
function stockchange(el) {
stockchart.setVisibility(el.id, el.checked);
}
+
+ function annotationschange(el) {
+ if (el.checked) {
+ stockchart.setAnnotations(stock_annotations);
+ } else {
+ stockchart.setAnnotations([]);
+ }
+ }
</script>
<!--
<h2 id="options">Other Options</h2>
- <p>These are the options that can be passed in through the optional third parameter of the Dygraph constructor. Under each option is a set of links to tests which demonstrate its use.</p>
-
- <table class="thinborder" width="900">
- <thead>
- <tr>
- <th width="150">Name</th>
- <th width="200">Values</th>
- <th width="150">Default</th>
- <th>Description</th>
- </tr>
- </thead>
- <tbody>
- <tr>
- <td><strong>includeZero</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>Usually, dygraphs will use the range of the data plus some padding to set the range of the y-axis. If this option is set, the y-axis will always include zero, typically as the lowest value. This can be used to avoid exaggerating the variance in the data.
- <div class="tests">Tests: <a href="tests/no-range.html">no-range</a> <a href="tests/numeric-gviz.html">numeric-gviz</a> <a href="tests/small-range-zero.html">small-range-zero</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>rollPeriod</strong></td>
- <td><code>integer >= 1</code></td>
- <td><code>1</code></td>
- <td>Number of days over which to average data. Discussed extensively above.
- <div class="tests">Tests: <a href="tests/demo.html">demo</a> <a href="tests/two-series.html">two-series</a> <a href="tests/noise.html">noise</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>showRoller</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>If the rolling average period text box should be shown.
- <div class="tests">Tests: <a href="tests/callback.html">callback</a> <a href="tests/crosshair.html">crosshair</a> <a href="tests/fractions.html">fractions</a> <a href="tests/isolated-points.html">isolated-points</a> <a href="tests/numeric-gviz.html">numeric-gviz</a> <a href="tests/underlay-callback.html">underlay-callback</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>colors</strong></td>
- <td><code>['red', '#00FF00']</code></td>
- <td><code></code></td>
- <td>List of colors for the data series. These can be of the form "#AABBCC" or "rgb(255,100,200)" or "yellow", etc. If not specified, equally-spaced points around a color wheel are used.
- <div class="tests">Tests: <a href="tests/color-visibility.html">color-visibility</a> <a href="tests/demo.html">demo</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>fillGraph</strong></td>
- <td><code>boolean<br/></code></td>
- <td><code>false</code></td>
- <td>Should the area underneath the graph be filled? This option is not
- compatible with error bars.
- <div class="tests">Tests: <a href="tests/fillGraph.html">fillGraph</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>visibility</strong></td>
- <td><code>Array of booleans<br/></code></td>
- <td><code>[true, true, ...]</code></td>
- <td>Which series should initially be visible? Once the Dygraph has
- been constructed, you can access and modify the visibility of each
- series using the <code>visibility</code> and
- <code>setVisibility</code> methods.
- <div class="tests">Tests: <a href="tests/visibility.html">visibility</a> <a href="tests/color-visibility.html">color-visibility</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>colorSaturation</strong></td>
- <td><code>0.0 - 1.0</code></td>
- <td><code>1.0</code></td>
- <td>If <strong>colors</strong> is not specified, saturation of the automatically-generated data series colors.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>colorValue</strong></td>
- <td><code>float (0.0 — 1.0)</code></td>
- <td><code>1.0</code></td>
- <td>If colors is not specified, value of the data series colors, as in hue/saturation/value. (0.0-1.0, default 0.5)
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>clickCallback</strong></td>
- <td><code>function(e, date){<br> alert(date);<br>}</code></td>
- <td><code>null</code></td>
- <td>A function to call when a data point is clicked. The function should take two arguments, the event object for the click and the date that was clicked. (default null)
- <div class="tests">Tests: <a href="tests/callback.html">callback</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>zoomCallback</strong></td>
- <td><code>function(minDate,<br/>maxDate){}</code></td>
- <td><code>null</code></td>
- <td>A function to call when the zoom window is changed (either by zooming in or out). minDate and maxDate are milliseconds since epoch.
- <div class="tests">Tests: <a href="tests/callback.html">callback</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>strokeWidth</strong></td>
- <td><code>integer</code></td>
- <td><code>1</code></td>
- <td>Width of the data lines. This can be used to increase the contrast or some graphs.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>dateWindow</strong></td>
- <td><code>[<br> Date.parse('2006-01-01'),<br> (new Date()).valueOf()<br>]</code></td>
- <td rowspan="2"><code>Full range of the<br/> input is shown</code></td>
- <td>Initially zoom in on a section of the graph. Is of the form [earliest, latest], where earliest/latest are milliseconds since epoch.
- <div class="tests">Tests: <a href="tests/dateWindow.html">dateWindow</a> <a href="tests/link-interaction.html">link-interaction</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>valueRange</strong></td>
- <td><code>[10, 110]</code></td>
- <td>Explicitly set the vertical range of the graph to [low, high].
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsSeparateLines</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>Put <code><br/></code> between lines in the label string. Often used in conjunction with <strong>labelsDiv</strong>.
- <div class="tests">Tests: <a href="tests/customLabel.html">customLabel</a> <a href="tests/demo.html">demo</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsDiv</strong></td>
- <td><code>document.<br/>getElementById('foo')</code></td>
- <td><code>null</code></td>
- <td>Show data labels in an external div, rather than on the graph.
- <div class="tests">Tests: <a href="tests/demo.html">demo</a> <a href="tests/label-div.html">label-div</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsKMB</strong></td>
- <td><code>true</code></td>
- <td><code>false</code></td>
- <td>Show K/M/B for thousands/millions/billions on y-axis.
- <div class="tests">Tests: <a href="tests/demo.html">demo</a> <a href="tests/labelsKMB.html">labelsKMB</a> <a href="tests/no-range.html">no-range</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsKMG2</strong></td>
- <td><code>true</code></td>
- <td><code>false</code></td>
- <td>Show k/M/G for kilo/Mega/Giga on y-axis. This is different than
- <code>labelsKMB</code> in that it uses base 2, not 10.
- <div class="tests">Tests: <a href="tests/labelsKMB.html">labelsKMB</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsDivWidth</strong></td>
- <td><code>250</code></td>
- <td><code></code></td>
- <td>Width (in pixels) of the div which shows information on the currently-highlighted points.
- <div class="tests">Tests: <a href="tests/customLabel.html">customLabel</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>labelsDivStyles</strong></td>
- <td><code>{}</code></td>
- <td><code>null</code></td>
- <td>Additional styles to apply to the currently-highlighted points div. For example, { 'font-weight': 'bold' } will make the labels bold.
- <div class="tests">Tests: <a href="tests/border.html">border</a> <a href="tests/customLabel.html">customLabel</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>highlightCircleSize</strong></td>
- <td><code>integer</code></td>
- <td><code>3</code></td>
- <td>The size in pixels of the dot drawn over highlighted points.
- <div class="tests">Tests: <a href="tests/grid_dot.html">grid_dot</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>drawPoints</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>Draw a small dot at each point, in addition to a line going through the point. This makes the individual data points easier to see, but can increase visual clutter in the chart.
- <div class="tests">Tests: <a href="tests/draw-points.html">draw-points</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>pointSize</strong></td>
- <td><code>interger</code></td>
- <td><code>1</code></td>
- <td>The size of the dot to draw on each point in pixels (see drawPoints). A dot is always drawn when a point is "isolated", i.e. there is a missing point on either side of it. This also controls the size of those dots.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>pixelsPerXLabel</strong></td>
- <td rowspan="2"><code>integer</code></td>
- <td><code>60</code></td>
- <td rowspan="2">Number of pixels to require between each x- and y-label. Larger values will yield a sparser axis with fewer ticks.
- <div class="tests">Tests: <a href="tests/spacing.html">spacing</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>pixelsPerYLabel</strong></td>
- <td><code>30</code></td>
- </tr>
- <tr>
- <td><strong>xAxisLabelWidth</strong></td>
- <td rowspan="2"><code>integer</code></td>
- <td><code></code></td>
- <td rowspan="2">Width (in pixels) of the x- and y-axis labels.
- <div class="tests">Tests: <a href="tests/customLabel.html">customLabel</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>yAxisLabelWidth</strong></td>
- <td><code></code></td>
- </tr>
- <tr>
- <td><strong>axisLabelFontSize</strong></td>
- <td><code>integer</code></td>
- <td><code>14</code></td>
- <td>Size of the font (in pixels) to use in the axis labels, both x- and y-axis.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>rightGap</strong></td>
- <td><code>integer</code></td>
- <td><code></code></td>
- <td>Number of pixels to leave blank at the right edge of the Dygraph. This makes it easier to highlight the right-most data point.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>errorBars</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>Does the data contain standard deviations? Setting this to true alters the input format (see above).
- <div class="tests">Tests: <a href="tests/noise.html">noise</a> <a href="tests/customLabel.html">customLabel</a> <a href="tests/draw-points.html">draw-points</a> <a href="tests/fillGraph.html">fillGraph</a> <a href="tests/fractions.html">fractions</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>sigma</strong></td>
- <td><code>integer</code></td>
- <td><code></code></td>
- <td>When errorBars is set, shade this many standard deviations above/below each point.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>fractions</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>When set, attempt to parse each cell in the CSV file as "a/b", where a and b are integers. The ratio will be plotted. This allows computation of Wilson confidence intervals (see below).
- <div class="tests">Tests: <a href="tests/fractions.html">fractions</a> </div>
- </td>
- </tr>
- <tr>
- <td><strong>wilsonInterval</strong></td>
- <td><code>boolean</code></td>
- <td><code>true</code></td>
- <td>Use in conjunction with the "fractions" option. Instead of plotting +/- N standard deviations, dygraphs will compute a Wilson confidence interval and plot that. This has more reasonable behavior for ratios close to 0 or 1.
- <div class="tests">Tests: <font color=red>none</font></div>
- </td>
- </tr>
- <tr>
- <td><strong>customBars</strong></td>
- <td><code>boolean</code></td>
- <td><code>false</code></td>
- <td>When set, parse each CSV cell as "low;middle;high". Error bars will be drawn for each point between low and high, with the series itself going through middle.
- <div class="tests">Tests: <a href="tests/custom-bars.html">custom-bars</a> <a href="tests/zero-series.html">zero-series</a> </div>
- </td>
- </tr>
-
- <tr>
- <td><strong>drawCallback</strong></td>
- <td><code>function(dygraph, is_initial)</code></td>
- <td><code>null</code></td>
- <td>When set, this callback gets called every time the dygraph is drawn. This includes the initial draw, after zooming and repeatedly while panning. The first parameter is the dygraph being drawn. The second is a boolean value indicating whether this is the initial draw.
- <div class="tests">Tests: callback synchronize</div>
- </td>
- </tr>
-
- <tr>
- <td><strong>gridLineColor</strong></td>
- <td><code>red, blue</code></td>
- <td><code>rgb(128,128,128)</code></td>
- <td>The color of the gridlines.
- <div class="tests">Tests: grid_dot</div>
- </td>
- </tr>
-
- <tr>
- <td><strong>highlightCallback</strong></td>
- <td><code>function(event, x, points)</code></td>
- <td><code>null</td>
- <td>When set, this callback gets called every time a new point is highlighted. The parameters are the JavaScript mousemove event, the x-coordinate of the highlighted points and an array of highlighted points: <code>[ {name: 'series', yval: y-value}, … ]</code>
- <div class="tests">Tests: callback crosshair</div>
- </td>
- </tr>
-
- <tr>
- <td><strong>strokeWidth</strong></td>
- <td><code>0.5, 2.0</code></td>
- <td><code>1.0</code></td>
- <td>The width of the lines connecting data points.
- <div class="tests">Tests: grid_dot</div>
- </td>
- </tr>
-
- <tr>
- <td><strong>width</strong></td>
- <td rowspan="2"><code>integer</code></td>
- <td><code>480</code></td>
- <td rowspan="2">Width/Height (in pixels) of the chart. If the container div has been explicitly sized, these attributes will be ignored.
- <div class="tests">Tests: demo link-interaction no-range</div>
- </td>
- </tr>
- <tr>
- <td><strong>height</strong></td>
- <td><code>320</code></td>
- </tr>
-
- </tbody>
- </table>
+ <p>In addition to the options mentioned above (<code>showRoller</code>, <code>rollPeriod</code>, <code>errorBars</code>, <code>valueRange</code>), there are <i>many</i> others.</p>
+
+ <p>For a full list, see the <a href="options.html">Dygraphs Options Reference</a> page.</p>
<h2>Common Gotchas</h2>
<li>Make sure you don't have any trailing commas in your call to the Dygraph constructor or in the options parameter. Firefox, Chrome and Safari ignore these but they can cause a graph to not display in Internet Explorer.</li>
</ul>
+ <h2 id="gwt">GWT Compatibility</h2>
+ <p>There is currently no GWT wrapper around Dygraphs, however there is a class that can be used to easily load Dygraphs into the browser. To use it, include the generated dygraph-gwt.jar file in your classpath and add the following line to your GWT module:</p>
+
+<pre>
+<inherits name="org.danvk.dygraphs"/>
+</pre>
+
+ <p>Call org.danvk.Dygraphs.install() when your application starts to install the JavaScript code into the browser. You can use <a href="http://code.google.com/webtoolkit/doc/latest/DevGuideCodingBasicsJSNI.html">JSNI</a> to call Dygraphs from your GWT code, as in the example below. The example uses the <a href="http://code.google.com/p/gwt-google-apis/wiki/VisualizationGettingStarted">Visualization API for GWT</a> and the <a href="#gviz">Dygraphs GViz API.</a></p>
+
+<pre>
+public static native JavaScriptObject drawDygraph(
+ Element element, DataTable dataTable, double minY, double maxY) /*-{
+ var chart = new $wnd.Dygraph.GVizChart(element);
+ chart.draw(dataTable,
+ {
+ valueRange: [minY, maxY]
+ });
+ return chart;
+}-*/;
+</pre>
+
+ <a name="gallery" />
+ <h2>Usage Gallery</h2>
+ <p>Since its public release in late 2009, dygraphs has found many users
+ across the web. This is a small collection of the uses that we know about.
+ If you're using dygraphs, please send <a
+ href="mailto:dan@dygraphs.com">Dan</a> a link and he'll add it to this
+ list.</p>
+
+ <p>dygraphs was originally developed at Google and has found wide use on
+ internal dashboards and servers there. There are also a few uses of
+ dygraphs on public Google products:</p>
+
+ <ul class='padded-list'>
+ <li><a href="http://www.google.com/trends/correlate/search?e=id:20xKcnNqHrk&t=weekly">Google Correlate</a><br/>
+ <span class="desc">Uses dygraphs for time series visualization. Mostly a standard configuration, with just a few tweaks to match Google style.</span></li>
+
+ <li><a href="http://www.google.com/trends/correlate/draw?p=us">Google Correlate - Search by Drawing</a><br/>
+ <span class="desc">This is a highly customized configuration which lets the user draw a time series. Based on <a href="tests/drawing.html">this demo</a>.</span></li>
+
+ <li><a href="https://www.google.com/latitude/b/0/history/manage">Google Latitude History Dashboard</a><br/>
+ <span class="desc">Uses mouse interaction callbacks to synchronize time series points with markers on a Google Map.</span></li>
+ </ul>
+
+ <p>dygraphs has also found use in other organizations:</p>
+
+ <ul class='padded-list'>
+ <li><a
+ href="http://iswa.ccmc.gsfc.nasa.gov:8080/IswaSystemWebApp/index.jsp?i_1=388&l_1=99&t_1=316&w_1=800&h_1=400&s_1=0!3!0!ACE.B_x!ACE.B_y!ACE.B_z!">Integrated
+ Space Weather Analysis System</a> (NASA)<br/>
+ <span class="desc">“We use [dygraphs] in the Integrated Space Weather
+ Analysis System available from the Space Weather Laboratory at NASA Goddard
+ Space Flight Center. It works quite well for time series data from various
+ missions and simulations that we store.”</span></li>
+
+
+ <li><a href="http://www.eutelsat.fr">Eutelsat</a><br/>
+ <span class="desc">“Eutelsat uses dygraphs for charting spacecraft
+ telemetry for a fleet of 25 geostationary satellites. The spacecraft
+ engineers are very happy with it. All satellite combined are producing
+ about 200 millions unique data points per day so we really appreciate the
+ excellent performance of dygraphs.”</span></li>
+
+ <li><a href="http://www.10gen.com/mongodb-monitoring-service">10gen MongoDB
+ Monitoring Service</a><br/>
+ <span class="desc">A free monitoring service for MongoDB from 10gen (the
+ creators of MongoDB). Used by thousands of servers and users. Makes use of
+ <a href="tests/synchronize.html">synchronized charts</a> to display many
+ quantities simultaneously.</span></li>
+
+ <li><a href="http://toolserver.org/~dartar/moodbar/">Wikimedia Foundation - Moodbar data dashboard</a><br/>
+ <span class="desc">dygraphs is used internally at Wikimedia as a handy solution to monitor the
+ results of a bunch of small experiments.</span></li>
+
+ <li><a href="http://code.google.com/p/quadrant-framework/">quadrant-framework</a> (MySQL Load Testing Framework)<br/>
+ <span class="desc">A user friendly framework for creating and visualizing
+ MySQL database load test jobs. For more information on its use of dygraphs,
+ see <a href="http://themattreid.com/wordpress/2011/05/20/quadrant-framework-rev7-update-adds-dygraphs-support/">this post</a>.</span></li>
+
+ <li><a href="http://spinwave.wordpress.com/2011/03/28/spinwave-systems-enables-energy-efficiency-case-studies/">Spinwave Systems</a> (Home energy monitoring)<br/>
+ <span class="desc">dygraphs is used to chart energy usage over time.</span></li>
+
+
+ <li><a href="http://www.socib.es/jwebchart/?file=http://thredds.socib.es/thredds/dodsC/mooring/weather_station/mobims_calamillor-scb_met001/L1/dep0001_mobims-calamillor_scb-met001_L1_latest.nc">Jwebchart</a><br/>
+ <span class="desc">
+ jWebChart is a stand-alone and Thredds' embedded plotting system for
+ netCDF files. NetCDF is a common standard for the storage and
+ distribution of scientific data.
+ </span></li>
+
+ <li><a href="http://ngrams.cavorite.com/">n-gramas - Explore las tendencias en los artÃculos periodÃsticos de Colombia.</a><br/>
+
+
+ <span class="desc">(English: "Explore trends in newspaper articles of
+ Colombia"). dygraphs is used for displaying the results of this n-grams
+ viewer. Uses an extension for exporting the plots as PNG images
+ (<a href="http://cavorite.com/labs/js/dygraphs-export/">[1]</a>, <a href="https://github.com/cavorite/dygraphs">[2]</a>).
+ </span></li>
+
+ </ul>
+
+ <p>Are you using dygraphs? Please let <a href="mailto:dan@dygraphs.com">Dan</a> know and he'll add your link here!</p>
+
+
<h2 id="policy">Data Policy</h2>
<p>dygraphs is purely client-side JavaScript. It does not send your data to any servers – the data is processed entirely in the client's browser.</p>
<p style="font-size:0.8em">Created May 9, 2008 by <a href=mailto:danvdk@gmail.com>Dan Vanderkam</a></p>
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