About
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 show charts on your website.

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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 (£99) commercial license available.

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Download
Get the latest version of RGraph (version 6.17) from the download page. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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HOWTO: Use CSS 3D transformations

WebKit (which is used by Chrome, Safari, Edge, Opera and possibly others) and Firefox all support css 3D transformations. If you're tasked with supporting these browsers then by using 3D transformations you can add 3D effects to your charts. The effect is specified by adding a css property which is shown below. Because the effect changes the position of the canvas coordinates in relation to the page you must also tell RGraph to position the tooltips at the pageX/pageY coordinates which you do with the tooltipsCoordsPage option - as shown below.

<canvas id="cvs"
           width="600"
           height="250"
           style="float: right;
            -webkit-transform: rotate3d(0, 1, 0, 45deg) rotate3d(0, 0, 1, 5deg) rotate3d(1, 0, 0, -15deg);
            -moz-transform: rotate3d(0, 1, 0, 45deg) rotate3d(0, 0, 1, 5deg) rotate3d(1, 0, 0, -15deg);
            -o-transform: rotate3d(0, 1, 0, 45deg) rotate3d(0, 0, 1, 5deg) rotate3d(1, 0, 0, -15deg);
            -ms-transform: rotate3d(0, 1, 0, 45deg) rotate3d(0, 0, 1, 5deg) rotate3d(1, 0, 0, -15deg);
            transform: rotate3d(0, 1, 0, 45deg) rotate3d(0, 0, 1, 5deg) rotate3d(1, 0, 0, -15deg);
            box-shadow: 3px 3px 15px gray">[No canvas support]</canvas>
<script>
    line = new RGraph.Line({
        id: 'cvs',
        data: [4,6,8,4,1,3,2,5,4,6,8],
        options: {
            xaxisLabels: ['John', 'Geoff', 'Lou','Kevin','Barry','John','Alex','Nick','Dave','Hoolio','Pete'],
            marginInner: 10,
            tickmarksStyle: 'arrow'
        }
    }).draw();
</script>

Known bugs

See also