ParaView is using the wrong VTK clip?

ParaView Support
1

Hello,

I’m getting the following warning when clipping a polygonal mesh:

Warning: In vtkTableBasedClipDataSet.cxx, line 1404
vtkTableBasedClipDataSet (0xc4378a0): Output points used by cells not supported by vtkTableBasedClipDataSet will appear twice. To avoid this, consider using vtkClipDataSet directly

Is ParaView using the wrong VTK clip?

I’m attaching the data. Loading it in ParaView and adding a clip filter triggers the warning. The warning is thrown by ParaView 6.1 and 6.2 but not by 6.0.

Many thanks,
Alexandre

2

Hi @Alexandre_Minot

Please share the whole dataset, only the .vtpc wont do.

3

cylinder_data.vtkhdf (1.3 MB)

Here we are, appologies.

4

ParaView is using the right clip which is performant - but the filter it is using can’t handle all cell types including polygons. For those cells, it defers clipping to the more general but slower vtkClipDataSet.

@spyridon97 you added this warning in https://gitlab.kitware.com/vtk/vtk/-/merge_requests/12532. For anyone processing polygonal datasets, which is becoming more common, this warning will appear every time. I think we should change it to a vtkDebugWarning as it is an informative message rather than indicating something is potentially going wrong.

5

@spyridon97 and I discussed this and we plan to change this warning to a vtkLog message at TRACE level so that it doesn’t appear in standard ParaView operation.