A Rose chart with an offset start

By using the anglesStart option you can specify the start angle of the Rose chart. The first segment here is colored pink so you can see the offset.

[No canvas support]

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.effects.js"></script>
<script src="RGraph.rose.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: