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RGraph: HTML5 canvas graph library - Donut chart documentation

The Donut chart was formerly a separate chart, however it's now simply a variant of the Pie chart.

<script>
    window.onload = function ()
    {
        var data = [45,57,48,32];
    
        var donut = new RGraph.Pie('myDonut', data);
        donut.Set('chart.labels', ['Jan', 'Ben', 'Mark', 'Lucy']);
        donut.Set('chart.linewidth', 5);
        donut.Set('chart.strokestyle', 'white');
        donut.Set('chart.tooltips', ['Jan', 'Ben', 'Mark', 'Lucy']);
        donut.Set('chart.variant', 'donut');
        donut.Draw();
    }
</script>

• Donut chart examples
• Pie chart documentation