I have a question that very much resembles the one answered by @Trevor_Behlman a year ago in a great post on page https://collaborate.pega.com/question/how-build-data-page-double-donut-chart-pega-83.

(Thank you Trevor for your elaborate post on building a double donut chart.)

I have been trying to reproduce his work, but unfortunately without success so far. I was hoping someone might be able to help.

First of: we’re working on a Pega 8.4.2 (build 561) implementation without Cosmos. I don’t know if that is a pre requisite, just thought I’d mention it.

I have reproduced the data page described in the before mentioned post. However, when I try to create the section with the data visualization I come across some differences.

Here’s what I do:

• Created a section
• Added page definitions to Pges & Classes:
  • D_DoubleDonutSource  as  @baseclass
  • D_DoubleDonutSource.pxResults  as  Code-Pega-List
  • D_DoubleDonutSource.pxResults.pxResults  as  Code-Pega-List
• From Data display added control Advanced data visualization

Note: in Trevor's post it says to select the data page “in your Data Visualization control”. I assume the difference between “Data Visualization" and “Advanced data visualization” is caused by the version difference 8.3 versus 8.4.2. Or is there another way to select the double donut visualization that I overlooked?

• In the control’s general tab: Type = DoubleDonut Data source = D_DoubleDonutSource

Now when I configure the inputs, the displayed options do not match the ones shown in Trevor's post:

Consequently the configured control does not show as a Double Donut.

Here are the rules and versions that might be relevant:

Control ID: pxSomaria_DataVisualization RS: Pega-Reporting:08-03-01 [Final]

Somaria JSON File ID: pyDoubleDonut RS: Pega-Reporting:08-02-01  [Available]

Note: The JSON file is one of the things that I specifically would like to verify. It says:

Any help on this will be greatly appreciated.

Regards, Pascal