Add equal_weights option to resample, fix Genesis4 bug

ChristopherMayes / openPMD-beamphysics

Tools for analyzing and viewing particle data in the openPMD standard, extension beamphysics.

https://christophermayes.github.io/openPMD-beamphysics/

Apache License 2.0

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Add equal_weights option to resample, fix Genesis4 bug #51

Closed ChristopherMayes closed 9 months ago

ChristopherMayes commented 9 months ago

Previously write_genesis4_distribution was incorrectly resampling with weights for export. Genesis4 requires equal weights for this type of distribution. This PR:

adds equal_weights option to ParticleGroup.resample, defaulting to False.
Corrects write_genesis4_distribution to use this.