If so, then a user might justifiably expect to pass pz instead or z, but only in the momentum case. Just something to consider, at this point.
When this gets extended to to_Vector4D, the time component has a lot of momentum synonyms. The geometric names for the two possible temporal coordinates are t and tau, but the momentum names are energy and mass, E and M, and (I think) e and m. There was a discussion once about including the lowercase as well as the uppercase.
If so, then a user might justifiably expect to pass
pz
instead orz
, but only in the momentum case. Just something to consider, at this point.When this gets extended to
to_Vector4D
, the time component has a lot of momentum synonyms. The geometric names for the two possible temporal coordinates aret
andtau
, but the momentum names areenergy
andmass
,E
andM
, and (I think)e
andm
. There was a discussion once about including the lowercase as well as the uppercase._Originally posted by @jpivarski in https://github.com/scikit-hep/vector/pull/319#discussion_r1115886750_