A grouped Bipolar chart

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.bipolar.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="600" height="450">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Bipolar({
        id: 'cvs',
        left:  [[1,2,3],[4,5,6],[7,8,9]],
        right: [[1,2,3],[4,5,6],[7,8,9]],
        options: {
            vmargin: 30,
            yaxisLabels: ['Alf','Barry','Charlie'],
            colors: [
                'Gradient(red:red:white:red:red)',
                'Gradient(green:green:white:green:green)',
                'Gradient(blue:blue:white:blue:blue)'
            ],
            tooltips: [
                '1','2','3',
                '1','2','3',
                '1','2','3',
                '1','2','3',
                '1','2','3',
                '1','2','3'
            ],
            colorsStroke: 'transparent',
            axes: false,
            grouping: 'grouped' // Default
        }
    }).grow();
</script>