A user on twitter asked us about including a Sunburst chart …
We created an example that you can download from DataGraph (File/On-line examples).
The approach is to use three Pie commands layered on top of each other to form the rings. It also has a color ramp that spans the min and max of the input data.
The file includes the same graph in different color schemes:
Here is a blue-green version ….
Here is a dark version …
One thing we want to add is an option is to have the labels on an angle, to allow for longer words.
Any comments let us know.