Hi Steph.
You can view our sample here: https://github.com/ThinkGeo/ClusterFeatureLayerSample-ForWpf
It looks we don’t use the ZedGraph for draw it now.
But you still have the package about ZedGraph here:
ThinkGeo.MapSuite.Styles.ZedGraph is a style extension to the Map Suite product line, see below for compatibility. Zedgraph is a truly massive library for graphics and charts. As you can add pie charts to your map, you can also add bar charts, trend...
“ZedGraph is a class library, user control, and web control for .net, written in C#, for drawing 2D Line, Bar, and Pie Charts. It features full, detailed customization capabilities, but most options have defaults for ease of use.
This package...
They are included in the standard solution, you don’t need to buy an extension.
Regards,
Ethan