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<title>RGraph: HTML5 Javascript charts library - The RGraph.SetConfig() function</title>
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<a href="../index.html">RGraph: HTML5 Javascript charts library</a>
>
<a href="index.html">Documentation</a>
>
The RGraph.SetConfig() function
</div>
<h1>RGraph: <span>HTML5 Javascript charts library</span> - The RGraph.SetConfig() function</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>
<div style="text-align: center; float: right; font-family: Verdana">
<canvas id="cvs" width="600" height="250">[No canvas support]</canvas>
</div>
<script>
window.onload = function ()
{
var grad = document.getElementById("cvs").getContext('2d').createLinearGradient(0, 0, 0, 250);
grad.addColorStop(0, 'red');
grad.addColorStop(1, 'white');
var config = {
'chart.colors': [grad],
'chart.labels': ['John','Fred','June','Charles','Lou', 'Olga'],
'chart.title.yaxis': 'Amount',
'chart.title.yaxis.pos': 0.2,
'chart.title.xaxis': 'Person',
'chart.gutter.left': 45,
'chart.gutter.bottom': 35,
'chart.gutter.right': 5,
'chart.background.grid.autofit': true,
'chart.strokestyle': 'rgba(0,0,0,0)',
'chart.title': 'A chart showing RGraph.SetConfig()'
}
var bar = new RGraph.Bar('cvs', [48,56,52,49,43,51]);
RGraph.SetConfig(bar, config);
bar.Draw();
}
</script>
<p>
Instead of using a number of .Set() calls, you may find that using the <i>RGraph.SetConfig()</i> method more to your tastes. The
method is an alternative to setting the configuration of your chart. It doesn't offer any speed benefits, but it can facilitate reuse better, so that the
appearance of your websites charts is the same. There's an example of its use below:
</p>
<br clear="all" />
<pre class="code">
<script>
window.onload = function ()
{
/**
* This configuration could be stored in a central configuration file, making its reuse easier. You could also have
* several different configurations that you pick and choose from depending on the requirements. Values in
* subsequent calls to .SetConfig() will overwrite previous ones.
*/
var config = {
'chart.colors': ['red', 'green'],
'chart.labels': ['John','Fred','June','Charles','Lou', 'Olga'],
'chart.title.yaxis': 'Amount',
'chart.title.yaxis.pos': -0.2,
'chart.title.xaxis': 'Person',
'chart.background.grid.autofit': true,
'chart.title': 'A chart showing RGraph.SetConfig()'
}
var bar = new RGraph.Bar('cvs', [48,56,52,49,43,51]);
RGraph.SetConfig(bar, config);
bar.Draw();
}
</script>
</pre>
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