The Sunburst data region functions similarly to TreeMap. It is a great visualization for hierarchical data set with summarized values and it uses circles instead of rectangles.
The Sunburst forms a series of circles to represent levels of the hierarchy. The highest level of the hierarchy is set with the inner circle and lower levels of the hierarchy are formed outside the inner circle as rings. Multiple rings represent multiple levels.
The following chart shows a hierarchical data set with the Sunburst data region:
You can find this report in
Chapter05 solution as Report03 - Sunburst.