Inquiring about the tool to modify HDF5 file

User Support
1

Dear all,

I would like to inquire if there are any convenient tools available to modify HDF5 file information. For instance, I would like to modify the cross-section of some reaction for a specific nuclide.

Thank you!

Best regards,
Tianxiang

2

You can change the values by hdfview, and need to run it with corresponding authority.

1 Like
3

While it is possible to use a program like hdfview to modify the .h5 files, I would personally use the openmc.data API to make a change to a data file. You can see an example of how to use the data API here. The basic pattern would be:

# Load an existing .h5 file
nuc = openmc.data.IncidentNeutron.from_hdf5(filename)

# Make some change
....

# Export to a new .h5 file
nuc.export_to_hdf5("modified.h5")
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4

Thank you so much，I have used similar tools

5

You’ve been a great help :grinning: :grinning: :grinning: