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scikit-hep / pyhepmc

Easy-to-use Python bindings for HepMC3
https://scikit-hep.org/pyhepmc/
BSD 3-Clause "New" or "Revised" License
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Time-like component of four vector apparently in wrong position #13

Closed vale981 closed 4 years ago

vale981 commented 4 years ago

Is there a reason to print-out the time-like component of a four vector as 4-th component? https://github.com/scikit-hep/pyhepmc/blob/753072aed9914b3fa88ca03e9d02a1e19e68523b/src/bindings.cpp#L217

I am asking that just out of curiosity. Thank you for this nice package :)

HDembinski commented 4 years ago

Hi, yes, as a guideline, the output of repr should eval back to the value. FourVector accepts the time-like component as the forth entry, that's why the order is space-likes, time-like.