About
RGraph is a JavaScript charts library based on
HTML5 SVG and canvas. RGraph is mature (over 17 years
old) and has a wealth of features making it an ideal
choice to use for showing charts on your website.
New datagrid in v6.21
In version 6.21 a new datagrid object has been added.
This makes it easy to add static or dynamic data
tables to your pages. It can be used whether you use the
canvas or SVG libraries or entirely standalone.
Download
Get the latest version of RGraph (version 6.21, 10th April 2025) from
the download page. You can read the changelog here. There's also older versions available,
minified files and links to cdnjs.com hosted libraries.
License
RGraph can be used for free under the GPL or if
that doesn't suit your situation there's an
inexpensive (£129) commercial license available.HOWTO: Using the global configuration values
Global configuration values are an easy way to reduce the amount of code on your pages if you're showing multiple charts that you want to all look the same - or at least share some configuration values.
You can set all or just a few values on the global object and all subsequently created chart objects will pick up those values. Here's an example:
<script>
RGraph.SVG.GLOBALS.backgroundGridVlines = false;
RGraph.SVG.GLOBALS.backgroundGridBorder = false;
RGraph.SVG.GLOBALS.xaxisLabels = ['Mon', 'Tue','Wed','Thu','Fri','Sat','Sun'];
RGraph.SVG.GLOBALS.colors = ['blue', 'red','pink','green'];
RGraph.SVG.GLOBALS.marginInner = 15;
RGraph.SVG.GLOBALS.xaxis = false;
RGraph.SVG.GLOBALS.yaxis = false;
new RGraph.SVG.Bar({
id: 'cc',
data: [
[8,8,8,4],[4,1,4,9], [6,3,6,3], [2,8,5,5],
[4,6,1,2], [6,3,8,6], [4,8,4,8]
],
options: {
marginInner:15,
marginInnerGrouped: 2
}
}).draw();
new RGraph.SVG.Bar({
id: 'cc2',
data: [5,8,7,6,4,3,5],
options: {
}
}).draw();
</script>
The global properties are read and set first - so any further configuration that you then set on the individual object will override the global value.