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RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 15 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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Get the latest version of RGraph (version 6.18, 1st June 2024) 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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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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Case-insensitivity coming to the RGraph configuration properties

Written by Richard Heyes, RGraph author, on 31st December 2023

For a long time now the RGraph configuration properties have been case-sensitive - meaning that you had to use exactly the same letter-case as what was listed in the documentation. As of the next version though - version 6.16 - you'll be able to use the property names in any letter-case that you choose. Here's an example of a Bar chart that uses the traditional style of configuration:

<script>
    new RGraph.Bar({
        id: 'cvs',
        data: [4,8,6,3,5,4,2],
        options: {
            colors: ['red','blue','green','mauve','yellow','pink','brown'],
            colorsSequential: true,
            backgroundGridVlines: false,
            backgroundGridBorder: false,
            xaxis: false,
            yaxis: false
        }
    }).draw();
</script>

And here's the same chart configuration using various different letter-cases (all of them are valid because letter-case is now disregarded entirely):

<script>
    new RGraph.Bar({
        id: 'cvs',
        data: [4,8,6,3,5,4,2],
        options: {
            colors: ['red','blue','green','mauve','yellow','pink','brown'],
            colorsSequential: true,
            BAckgrounDGridvLInes: false,
            BACKGROUNDGRIDBORDER: false,
            XaxiS: false,
            yaxis: false
        }
    }).draw();
</script>

This change will be a part of the next release.