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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 scale on my Bar chart is showing incorrectly


Posted by Jerry at 17:22 on Friday 19th May 2023 [link]
Hello,

My Bar chart is showing the scale as 0,0,0,1,1,1 instead of 0,0.2,0.4,0.6,0.8,1.0 - how can I fix this?

Posted by Richard at 17:39 on Friday 19th May 2023 [link]
The scale is showing like that because of rounding. The maximum value on the scale is being set to 1 - and then divided by five to come up with a scale like this: [0,0.2,0.4,0.6,0.8,1.0]. However, the numbers are rounded in order to fit in with the number of decimals - which by default is zero. So the numbers are being rounded to what you're seeing.

The solution here is to set the yaxisScaleDecimals propety to 1 - that way you'll see your Y axis labels as expected: [0,0.2,0.4,0.6,0.8,1.0].

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