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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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How do I populate the horseshoe.value property of the Horseshoe meter from a CSV file?


Posted by GMann at 21:06 on Wednesday 3rd November 2021 [link]
I m tring to figure out how to load a number from a csv file (with only one number for now) and assign it to the horseshoe.value so the gauge reads that number from the csv file.
i have the gauge working with a static number but cant figure out the csv file load

Posted by Richard at 21:34 on Wednesday 3rd November 2021 [link]
There are the simple AJAX functions in RGraph. And you'd use them like this:

RGraph.AJAX.getCSV('/sample.csv', function (csv)
{
    var hs = new RGraph.Horseshoe({
        id: 'cvs',
        min: 0,
        max: 20,
        value: csv[1], // This is the second value in your CSV
         options: {
        }
    }).grow();
});

Replace sample.csv with the name and path of your CSV file (eg /path/to/my.csv). The CSV file, because of AJAX security restrictions, should be on the same website as the chart.

For multi-line CSV files you should look at using the CSV import utility:

https://www.rgraph.net/canvas/csv.html

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