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.
Version 7.01 released
Version 7.01 (released in October 2025) is the
latest version of RGraph and now includes a new tree
structure object. The accompanying Treemenu object can then turn
the object into a fully dynamic tree menu.
You can read the API documentation for the tree on
the main API documentation page
and see an example of the Treemenu
feature by following this link...
New HTML datagrid
In the April 2025 (v6.21) release a new datagrid object
was 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 7.01, 8th October 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.A pink Pie chart
Another quite basic Pie chart that is predominantly a pinkish theme. All of the colors are defined using rgb values instead of hex values or named colors.
The linewidth is set to 2 so the resultant effect is a small amount of segment separation.
The labels are defined and the textSize option is enlarged slightly so that those labels are a little bit clearer.
It's quite a basic example of a Pie chart but the resulting aesthetic is quite nice. This goes to show that your charts don't need to be fancy to look good!
This goes in the documents header:
<script src="RGraph.common.core.js"></script> <script src="RGraph.pie.js"></script>Put this where you want the chart to show up:
<canvas id="cvs" width="550" height="450"> [No canvas support] </canvas>This is the code that generates the chart - it should be placed AFTER the canvas tag(s):
<script> // A pretty straight-forward Pie chart. The only thing to note here // really is the use of the linewidth property to create a small // segment separation effect. The default color for the stroke is // white so it just blends into the background of the page (the // default background color of the canvas tag is transparent). new RGraph.Pie({ id: 'cvs', data: [3,7.9,2,10.3,11.1,1,63.9], options: { colors: [ 'rgb(51,102,204)', 'rgb(220,57,18)', 'rgb(255,153,0)', 'rgb(16,150,24)', 'rgb(153,0,153)', 'rgb(0,153,198)', 'rgb(221,68,119)' ], linewidth: 2, shadow: false, labels: ['3%','7.9%','2%','10.3%','11.1%','1%','62.9%'], textSize: 10, textColor: '#444' } }).draw(); </script>