(Known issue: Invert selection of Paraview's FRUSTUM selection does not work properly, so when selection is inversed, the changeMeshMaterialId and extractSelectionAsInput are disabled)
(Note: After selection is extracted, a new "subset" will be added to the list in "Filters" tab. In order to set this new subset as filters input, it has to be selected in the list, then click on "Set Selected as Input" button on the Filters tab)
This application can load a 2dm or 3dm mesh file, and automatically connects the reader with ThresholdFilter->MeshQualityFilter->HistogramFilter, so that the mesh can be examined with various statistics. Also the materialIds of the cells in the volume mesh can be modified by selecting the cells then assigining a new Id and the modified mesh can be saved saved out.