<!DOCTYPE html >
<html>
<head>
<link rel="stylesheet" href="demos.css" type="text/css" media="screen" />
<script src="../libraries/RGraph.common.core.js" ></script>
<script src="../libraries/RGraph.bar.js" ></script>
<title>A demo of a logarithmic Bar chart</title>
<meta name="robots" content="noindex,nofollow" />
<meta name="description" content="A Bar chart using specific labels to give a logarithmic axis" />
</head>
<body>
<h1>A demo of a logarithmic Bar chart</h1>
<p>
This demonstrates a logarithmic chart using log(10). It has custom Y labels.
</p>
<canvas id="cvs" width="600" height="300">[No canvas support]</canvas>
<script>
window.onload = function ()
{
var data = [1000000,5,6,4,6,8012,12,7];
for (var i=0;i<data.length; ++i) {
data[i] = RGraph.log(data[i], 10); // This function is in RGraph.common.core.js
}
// Create the Bar and then use the set method to configure
// the chart so that the Bar object can be used in the
// configuration
var bar = new RGraph.Bar({
id: 'cvs',
data: data
});
bar.set({
numyticks: 6,
ymax: 6,
ylabelsSpecific: ['1,000,000', '100,000', '10000', '1,000', '100', '10', '0'],
labels: ['Pob','Libby','June','Hoolio','Jane','Daz','Luis','John'],
numxticks: 8,
textSize: 14,
gutterLeft: 95,
backgroundGridAutofitNumhlines: 6,
backgroundGridAutofitNumvlines: 7,
strokestyle: 'transparent',
shadow: false,
textAccessible: true
}).draw();
};
</script>
<p></p>
This goes in the documents header:
<pre class="code">
<script src="RGraph.common.core.js"></script>
<script src="RGraph.line.js"></script>
</pre>
Put this where you want the chart to show up:
<pre class="code">
<canvas id="cvs" width="600" height="250">
[No canvas support]
</canvas>
</pre>
This is the code that generates the chart:
<pre class="code">
<script>
window.onload = function ()
{
var data = [1000000,5,6,4,6,8012,12,7];
for (var i=0;i<data.length; ++i) {
data[i] = RGraph.log(data[i], 10); <span>// This function is in RGraph.common.core.js</span>
}
<span>// Create the Bar and then use the set method to configure
// the chart so that the Bar object can be used in the
// configuration</span>
var bar = new RGraph.Bar({
id: 'cvs',
data: data
});
bar.set({
numyticks: 6,
ymax: 6,
ylabelsSpecific: ['1,000,000', '100,000', '10000', '1,000', '100', '10', '0'],
labels: ['Pob','Libby','June','Hoolio','Jane','Daz','Luis','John'],
numxticks: 8,
textSize: 14,
gutterLeft: 95,
backgroundGridAutofitNumhlines: 6,
backgroundGridAutofitNumvlines: 7,
strokestyle: 'transparent',
shadow: false,
textAccessible: true
}).draw();
};
</script>
</pre>
<p>
<a href="https://www.facebook.com/sharer/sharer.php?u=http://www.rgraph.net" target="_blank" onclick="window.open('https://www.facebook.com/sharer/sharer.php?u=http://www.rgraph.net', null, 'top=50,left=50,width=600,height=368'); return false"><img src="../images/facebook-large.png" width="200" height="43" alt="Share on Facebook" border="0" title="Visit the RGraph Facebook page" /></a>
<a href="https://twitter.com/_rgraph" target="_blank" onclick="window.open('https://twitter.com/_rgraph', null, 'top=50,left=50,width=700,height=400'); return false"><img src="../images/twitter-large.png" width="200" height="43" alt="Share on Twitter" border="0" title="Mention RGraph on Twitter" /></a>
</p>
<p>
<a href="./">« Back</a>
</p>
</body>
</html>