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.net Powerful JavaScript charts
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.

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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.

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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.

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Latest forum posts
These are the latest support forum posts that have been posted or updated.


16th June, Rachel
I have a question about the 3D Bar chart
12th June, Marco
Should I use SVG or canvas for the charts on my website?
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?


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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.

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The construction of 3D graphics


Posted by evan at 16:38 on Tuesday 10th May 2022 [link]
Do you have any recommendations for geometry generation? How are 3D pie charts constructed

Posted by Richard at 18:00 on Tuesday 10th May 2022 [link]
There's not really any 3D geometry generation - canvas (without webGL) is a 2d environment so the 3D looks have to be "hacked together".

The 3D Pie chart canvas is stretched horizontally, the chart is then centered and drawn multiple times moving the center coordinate up by one each time. This gives the correct perspective and the thickness of the chart.

Unfortunately, it's not the most efficient drawing process (the Pie chart is drawn multiple times per frame) but it's passable.

Oh, and canvas text looks slightly thicker due to it being stretched too.

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