I’m looking into by-passing the TRUCHAS reader (builtin to VTK) for our custom HDF5 output by reimplementing the output using the VTKHDF file format. Each cell in the unstructured mesh is tagged with an integer that identifies the part (nothing whatsoever to do with MPI) the cell belongs to. I’ve looked at the source for the reader and it appears to be creating a vtkMultiBlockDataSet and reorganizing the cells of each part into a “block”. After reader imports the data we get the following property and information tabs:
Notice the “Blocks” checkbox section on the properties tab. It allows one to chose which blocks are loaded into paraview.
I’ve setup a dummy vtkhdf MultiBlockDataSet-type file (2 cells, 2 blocks, 1 cell in each block). It loads and displays in paraview as expected, however I don’t get a “Blocks” checkbox section as with the TRUCHAS reader. Here’s the properties and information tab for this one. Note that it appears as a MultiBlockDataSet with two blocks as expected.
Any idea why I’m not getting the “Blocks” checkbox with vtkhdf? Am I missing something? I can provide the test vtkhdf file if it would be of any use.