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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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How do I add a reference line to my chart?


Posted by Pedro at 20:32 on Friday 25th April 2025 [link]
Tem como criar uma linha de referXXncia ligando ponto x e y em um grXXfico de linhas?

Translation:

Is it possible to create a reference line connecting points x and y in a line graph?
Attached image:
Attached image

Posted by Richard at 13:25 on Saturday 26th April 2025 [link]
Hi,

I was all ready to point you to the horizontalLines property and then at the last moment saw your image that has a vertical line in it!

There's no vertical line property for the Line chart - perhaps I should add one - but adding a vertical line is quite easy. I've made a CodePen example for you on how to do it and that's at the link here:

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

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