Forgive me, are you saying line 353 of the demo code you pointed me towards before or some other code? Also, with the snippet you sent, I’m assuming numpy_support is a vtkmodule, but the np_curv that you are defining, would that be specifically the curvatures created by the following code:
curv = vtk.vtkCurvatures()
curv.SetInputData(mesh)
curv.SetCurvatureTypeToGaussian()
curv.Update()
pd = curv.GetOutputData(0)
from pd or would I use curv?