vtkTubeFilter: radius data not used correctly when pointdata changes

Thanks for the reply,
really appreciate all the answers and effort you (and the previous responder) put in to solve VTK questions.

In the meantime, I did get to the same point by trial and error myself ;0). Although “tube_filter.SetInputData(tube_poly_data)” needs still to be called, since tube_poly_data has changed as well.
Slowly but surely I’m getting the hang of this pipeline thing in VTK.
Will definitely ask questions sooner next time. Took me a while to sign up here in this forum.

Again thanks a lot

Thomas