An example of a Pie chart with an interactive key

The interactive key has been reimplemented as of June 2013 and added to more chart types.

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.dtnamic.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.drawing.rect.js"></script>
<script src="RGraph.pie.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="400" height="400">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Pie({
        id: 'cvs',
        data: [50,54,53,56,58],
        options: {
            key: ['Jim','Jack','Joseph','Jane', 'Jimmy'],
            keyInteractive: true,
            radius: 150
        }
    }).draw();
</script>