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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 17 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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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.

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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.

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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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