In each of the scripts below, it is assumed that the MyVis variable references the targeted visualization. See here for more information about referencing visualizations.
Change the Treemap Hierarchy Custom Expression:
from Spotfire.Dxp.Application.Visuals import * myVis = myVis.As[Visualization]() # Single category column myVis.HierarchyAxis.Expression = "<[Column A]>" # OR, for example, nested category columns myVis.HierarchyAxis.Expression = "<[Column A] NEST [Column B]>"
If you aren't sure how to write a specific custom expression correctly from scratch, start by building the expression interactively using the Spotfire user interface. Once your custom expression is working correctly, right-click on the custom expression input box selector(s) and choose Custom Expression. You can then copy the expression shown into your IronPython script.
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