Visualization of uninterpolated DMPlex with hdf5 currently does not work. I think the culprit is this line. <https://bitbucket.org/petsc/petsc/src/aa0ba431d766d8676b0f511486aa700b6a8925ca/src/dm/impls/plex/plexhdf5.c?at=master&fileviewer=file-view-default#plexhdf5.c-303>Is this to avoid duplicating output for the topology? If so, I think this is wrong, because the dataset /topology/cells does not have the correct block size and correct values (it outputs point numbers and not vertex numbers) for visualization.
Thanks, Sander
