In the claim data I have the Primary Diagnosis and the associated Diagnosis Grouper. Displaying the primary in a pie chart lends to many slivers. Using the grouper works better visually. The goal would be to display the data with the groupers only first. Upon selecting a grouper section, then show the pie with the associated primaries. Trying to remove the intimidating visual of nesting pie charts (Grouper.pdf).
Re: Is there a way to "cascade" a pie style chart?
from your comment of Dimension Drill down, I found the section on drill down groups to apply to the graph. simple click on Edit Groups to create, replace the dimensions, Perfect!! Also, thanks for the sample.