Internally, a number of coordinate transformations have additional parameters, that we should expose in the public API.
In particular, we should add an altitude keyword-only parameter to the lonlat2... transformations for e.g. plotting features like auroral ovals that aren't on the planet's "surface". We already have an alt argument in the private _lonlat2targvec_radians, so this should be a straightforward change.
Internally, a number of coordinate transformations have additional parameters, that we should expose in the public API.
In particular, we should add an altitude keyword-only parameter to the
lonlat2...transformations for e.g. plotting features like auroral ovals that aren't on the planet's "surface". We already have analtargument in the private_lonlat2targvec_radians, so this should be a straightforward change.