A Donut-in-donut example

This example of three donut charts shows how they can be nested inside each other.

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.pie.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="550" height="550">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    pie1 = new RGraph.Pie({
        id: 'cvs',
        data: [4,3,5,6,8],
        options: {
            variant: 'donut',
            variantDonutWidth: 50,
            colorsStroke: 'white',
            linewidth: 5,
            marginLeft: 15,
            marginRight: 15,
            marginTop: 15,
            marginBottom: 15,
            shadowBlur: 25,
            shadowOffsetx: 0,
            shadowOffsety: 0
        }
    }).draw()

    pie2 = new RGraph.Pie({
        id: 'cvs',
        data: [5,4,8,6,2],
        options: {
            radius: pie1.radius - 50,
            variant: 'donut',
            variantDonutWidth: 50,
            colorsStroke: 'white',
            linewidth: 5,
            shadow: false
        }
    }).draw()



    pie3 = new RGraph.Pie({
        id: 'cvs',
        data: [4,1,5,6,3],
        options: {
            radius: pie2.radius - 50,
            variant: 'donut',
            variantDonutWidth: 50,
            colorsStroke: 'white',
            linewidth: 5,
            shadowBlur: 25,
            shadowOffsetx: 0,
            shadowOffsety: 0
        }
    }).draw()
    
    RGraph.ObjectRegistry.bringToFront(pie2);
</script>