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To use Geant4 analysis with HDF5, you need to build Geant4 libraries with the -DGEANT4_USE_HDF5=ON CMake option. This information is now available in the Application Developer Guide for 10.4:
Also note, that if you want to use HDF5 output in multi-threading mode, you need to build HDF5 library in thread-safe mode.
Once the HDF5 option is enabled, you can add
in your Analysis.hh header file and then use G4AnalysisManager in the same way as for the other output formats.