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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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Background horizontal lines on the HBar chart are not adjusting


Posted by Alek at 17:44 on Monday 14th March 2022 [link]
Hi Richard,
I have one more issue to resolve though:

I have very long labels on my horizontal bar chart and I am forced to break them down into multiple lines, which forced me to dynamically increase bottom margin of the chart.
I am using background horizontal lines on those charts and when bottom margin is increased background is not squashed as the rest of the chart, leaving buttom lines below the X-axis
Do you have any suggestions?

Setup:
backgroundGrid: true,
backgroundGridVlines: false,
backgroundGridBorder: false,

Thanks,
Alek

Posted by Richard at 21:17 on Monday 14th March 2022 [link]
Regarding very long labels on an HBar chart here's an alternative to using long labels - use short labels and add a key:

https://codepen.io/rgraph/pen/XWVJxJM

Regarding the background grid - it's cached in order to increase the performance of animations.

When you redraw the HBar chart you can do this:

RGraph.cache = [];

Which effectively clears the cache. You might also be able to do this using events (though I haven't tested this):

hbar = new RGraph.HBar({
    id: 'cvs',
    data: [4,8,6,4,5,8,8],
    options: {
    }
}).on('beforedraw', function (obj)
{
    RGraph.cache = [];
}).draw();

Posted by Alek at 22:44 on Monday 14th March 2022 [link]
RGraph.cache = [] worked! I didn't use it inside of event though
Thanks so much for quick replies
I am very new to RGraph, but really like it's functionality, flexibility and dynamic nature

[Replies are closed]