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<a href="../index.html">RGraph: HTML5 Javascript charts library</a>
>
<a href="index.html">Documentation</a>
>
Gauge charts
</div>
<h1>RGraph: <span>HTML5 Javascript charts library</span> - Gauge charts documentation</h1>
<script>
if (RGraph.isIE8()) {
document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the charts, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag.</div>');
}
</script>
<p>
Gauge charts are another variant of the Odometer/Meter and may be more suited to your design.
</p>
<p>
The example file is <a href="../examples/gauge.html">here</a>.
</p>
<ul>
<li><a href="#available.properties">Properties</a></li>
</ul>
<pre class="code">
<script>
window.onload = function ()
{
var gauge = new RGraph.Gauge('cvs', 0, 100, 46);
gauge.Set('chart.title', 'Bandwidth');
gauge.Draw();
}
</script>
</pre>
<a name="available.properties"></a>
<h2>Properties</h2>
<p>
You can use these properties to control how the Gauge chart apears. You can set them by using the Set() method. Eg:
</p>
<p>
<b>myGauge.Set('name', 'value');</b>
</p>
<ul>
<li><a href="#margins">Margins</a></li>
<li><a href="#labels and text">Labels and text</a></li>
<li><a href="#titles">Titles</a></li>
<li><a href="#scale">Scale</a></li>
<li><a href="#colors">Colors</a></li>
<li><a href="#needle">Needle</a></li>
<li><a href="#miscellaneous">Miscellaneous</a></li>
</ul>
<a name="margins"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Margins</h3>
<a name="chart.gutter.left"></a>
<b>chart.gutter.left</b><br />
The left gutter of the chart.<br />
<i>Default: 5</i><br /><br />
<a name="chart.gutter.right"></a>
<b>chart.gutter.right</b><br />
The right gutter of the chart.<br />
<i>Default: 5</i><br /><br />
<a name="chart.gutter.top"></a>
<b>chart.gutter.top</b><br />
The top gutter of the chart.<br />
<i>Default: 5</i><br /><br />
<a name="chart.gutter.bottom"></a>
<b>chart.gutter.bottom</b><br />
The bottom gutter of the chart.<br />
<i>Default: 5</i><br /><br />
<a name="labels and text"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Labels and text</h3>
<a name="chart.text.font"></a>
<b>chart.text.font</b><br />
The font that is used for the text.<br />
<i>Default: Verdana</i><br /><br />
<a name="chart.text.color"></a>
<b>chart.text.color</b><br />
The color of the text.<br />
<i>Default: #666</i><br /><br />
<a name="chart.text.size"></a>
<b>chart.text.size</b><br />
The size of the text<br />
<i>Default: 10</i><br /><br />
<a name="titles"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Titles</h3>
<a name="chart.title"></a>
<b>chart.title</b><br />
The title of the chart, if any. <br />
<i>Default: (An empty string)</i><br /><br />
<a name="chart.title.font"></a>
<b>chart.title.font</b><br />
The font that the title is rendered in. If not specified the chart.text.font setting is used (usually Verdana)<br />
<i>Default: Verdana</i><br /><br />
<a name="chart.title.size"></a>
<b>chart.title.size</b><br />
The size of the title. If not specified the size is usually 2pt bigger than the chart.text.size setting.<br />
<i>Default: 14</i><br /><br />
<a name="chart.title.bold"></a>
<b>chart.title.bold</b><br />
Whather the title is bold or not.<br />
<i>Default: true</i><br /><br />
<a name="chart.title.color"></a>
<b>chart.title.color</b><br />
The color that the title is rendered in.<br />
<i>Default: #333</i><br /><br />
<a name="scale"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Scale</h3>
<a name="chart.scale.decimals"></a>
<b>chart.scale.decimals</b><br />
The number of decimals used in the labels<br />
<i>Default: 0</i><br /><br />
<a name="chart.units.pre"></a>
<b>chart.units.pre</b><br />
The units that the Y axis is measured in. This string is displayed BEFORE the actual number, allowing you to specify values such as "$50".<br />
<i>Default: '' (An empty string)</i><br /><br />
<a name="chart.units.post"></a>
<b>chart.units.post</b><br />
The units that the Y axis is measured in. This string is displayed AFTER the actual number, allowing you to specify values such as "50ms".<br />
<i>Default: '' (An empty string)</i><br /><br />
<a name="colors"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Colors</h3>
<a name="chart.red.start"></a>
<b>chart.red.start</b><br />
The point at which the red area starts.<br />
<i>Default: 90% of the max</i><br /><br />
<a name="chart.red.color"></a>
<b>chart.red.color</b><br />
The red color.<br />
<i>Default: #DC3912</i><br /><br />
<a name="chart.yellow.color"></a>
<b>chart.yellow.color</b><br />
The yellow color.<br />
<i>Default: #FF9900</i><br /><br />
<a name="chart.green.end"></a>
<b>chart.green.end</b><br />
The point at which the green area ends.<br />
<i>Default: 70% of the max</i><br /><br />
<a name="chart.green.color"></a>
<b>chart.green.color</b><br />
The green color.<br />
<i>Default: rgba(0,0,0,0)</i><br /><br />
<a name="needle"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Needle</h3>
<a name="chart.needle.tail"></a>
<b>chart.needle.tail</b><br />
Whether the tail for the needle is shown.<br />
<i>Default: false</i><br /><br />
<a name="miscellaneous"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Miscellaneous</h3>
<a name="chart.border.width"></a>
<b>chart.border.width</b><br />
The width of the border that goes around the Gauge.<br />
<i>Default: 10</i><br /><br />
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|
