# *nth_coord* parameter to axisartist helpers for fixed axis

Helper APIs in [.axisartist]{.title-ref} for generating a \"fixed\" axis
on rectilinear axes ([.FixedAxisArtistHelperRectilinear]{.title-ref}) no
longer take a *nth_coord* parameter. That parameter is entirely inferred
from the (required) *loc* parameter.

For curvilinear axes, the *nth_coord* parameter remains supported (it
affects the *ticks*, not the axis position itself), but it is now
keyword-only.