About
RGraph is a JavaScript charts library based on
HTML5 SVG and canvas. RGraph is mature (over 18 years
old) and has a wealth of features making it an ideal
choice to use for showing charts on your website.
Version 7.20
Version 7.20 (released in June 2026) is the
latest version of RGraph and the major change in
this version is an update to the default values
of properties making for better looking charts without
having to set any properties.
Read more about this and other changes in
the changelog.
Download
Get the latest version of RGraph (version 7.20, 9th June 2026) 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.
Latest forum posts
These are the latest support forum posts that have been
posted or updated.
9th June, Richard
New version of RGraph: version 7.20
3rd June, Patrick
Question about installing RGraph
1st June, Ouja
How do I add a click event to a bar in my Bar chart?
8th May, Anthony Kuma
Does the SVG Line chart have outofbounds functionality?
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.The filledAccumulative Line chart setting
Introduction
This page shows how the setting filledAccumulative affects your charts. The first chart shown below has it enabled (the default), so the lines, in effect, sit on top of each other. The second chart has the setting set to false so the points are drawn "as-is", ie not accumulatively. The first chart could be more useful if you wish to see totals, whereas the second chart below might be better if you want to see individual values.
Keep in mind that if you choose to use a non-accumulative chart the colors may be better as semi-transparent ones, otherwise parts or all of some lines may get hidden by others.
An example of filledAccumulative=true
<script>
new RGraph.Line({
id: 'cvs',
data: [
[4,3,6,7,8,4,9,5,1,3,4,3],
[4,5,1,6,2,3,4,5,8,1,9,7]
],
options: {
textSize: 16,
xaxisLabels: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
filledColors: ['rgba(255,0,0,0.3)', 'rgba(0,0,255,0.3)'],
filled: true,
filledAccumulative: true,
linewidth: 0.01,
title: 'A filled line with filledAccumulative=true',
titleSize: 16,
spline: true
}
}).draw();
</script>
An example of filledAccumulative=false
<script>
new RGraph.Line({
id: 'cvs',
data: [
[4,3,6,7,8,4,9,5,1,3,4,3],
[4,5,1,6,2,3,4,5,8,1,9,7]
],
options: {
textSize: 16,
xaxisLabels: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
filledColors: ['rgba(255,0,0,0.3)', 'rgba(0,0,255,0.3)'],
filled: true,
filledAccumulative: false,
title: 'A filled line with filledAccumulative=false',
titleSize: 16,
linewidth: 0.01,
spline: true
}
}).draw();
</script>