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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 7.10 released
Version 7.10 (released in January 2026) is the latest version of RGraph and contains various updates to the code which you can see on the changelog page. There's also a big tidy up in terms of comments and a significant change to the way that the internal code is referenced which should lead to a performance improvement in effects and animations.

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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.

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Download
Get the latest version of RGraph (version 7.10, 18th January 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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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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Problem with the minimum value of a Semi-circular progress bar


Posted by milan at 22:25 on Wednesday 11th October 2023 [link]
Hello,

If I assign a minimum value other than 0 to a semicircular progress bar, entire bar disappears.
Any help regarding this?
Thanks!

Posted by Richard at 10:06 on Thursday 12th October 2023 [link]
Hmm, I thought the SCP handled negative values - evidently not! I'll fix it for you and get back to you (later on today hopefully).

Cheers.

Posted by Richard at 15:13 on Thursday 12th October 2023 [link]
OK I've updated the Semi-circular progress source file and you can get it here from GitHub:

https://raw.githubusercontent.com/heyesr/rgraph/main/libraries/RGraph.semicircularprogress.js

And here's some example source code:

new RGraph.SemiCircularProgress({
    id: 'cvs',
    min: -100,
    max: 100,
    value: -50,
    options: {
        radius: '-50',
        width: 50,
        labelsCenterSize: 120,
        labelsCenterUnitsPost: 'k',
        labelsCenterOffsety: 20,
        colorsStroke: 'transparent',
        backgroundGrid: true,
        scale: true,
        scaleLabelsCount: 20
    }
}).grow();

Posted by milan at 20:03 on Thursday 12th October 2023 [link]
Many thanks!

[Replies are closed]