ivoa-std / VOUnits

Units in the VO
Creative Commons Attribution Share Alike 4.0 International
0 stars 4 forks source link

Added text to discuss scale-factors in function-application. #22

Closed nxg closed 1 year ago

nxg commented 1 year ago

Addresses issue #17.

Despite the discussion in that issue, the preferred grammars (or rather, the grammars as (not) adjusted in relation to [unity issue not permit scalefactors.

Firstly, there's only ambiguous justification for including them, based on the described FITS/OGIP grammars. Secondly, the fact that FITS permits m(2), meaning m^2, means that function-application is nearly ambiguous anyway, and I was not able to find a way of resolving that in a straightforward way. I think we can take that as a hint that we shouldn't be creative here.