An example of a Horizontal Bar 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.dynamic.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.drawing.rect.js"></script>
<script src="RGraph.hbar.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="600" height="550">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.HBar({
        id: 'cvs',
        data: [[8,4,1],[4,8,8],[1,2,2],[3,3,4],[6,5,2],[5,8,8],[4,8,5]],
        options: {
            marginLeft: 95,
            key: ['Jim','Jack','Joseph'],
            keyInteractive: true,
            yaxisLabels: ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday']
        }
    }).draw();
</script>