Maybe this is a little late, but can we please choose a file extension for VTKHDF files that is not .hdf? It’s extremely frustrating when the extension for a general container format like hdf5 (or netCDF or bp or xml or json) is used over and over for conventions that are incompatible with each other. It wreaks havoc on applications like ParaView that make it difficult to determine which reader to use.
There is a reason why we use extensions like .vti, .vtp, .vtu, etc. instead of just naming them all .xml, which would be a mess. Let’s choose an appropriate VTKHDF extension now before it’s too late. I propose using .vtkhdf, which is simple enough.