From version 7.3, the .mat file format is supposed to be in binary HDF5 format, and should allow processing by the standard HDF5 tools that are around. I am trying to modify a .mat file using python library h5py. (I delete a dataset from the .mat file and recreate it with an additional dimension). If I try to open the modified file in MATLAB, I am getting a segmentation fault.
Is MATLAB really using standard HDF5 format, or does it require any hidden metadata, that I don't know of?