A "rectangular" Pie chart

By using a large radius setting the Pie will be too large for the canvas and you'll get a "rectangular" Pie chart effect.

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.common.effects.js"></script>
<script src="RGraph.pie.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="350" height="250">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Pie({
        id: 'cvs',
        data: [4,8,4,6,5,3,2,5],
        options: {
            radius: 350,
            key: ['Alvin','Pete','Hoolio','Jack','Kev','Luis','Lou','Jesse'],
            colorsStroke: 'white',
            linewidth: 3
        }
    }).roundRobin().grow();
</script>