Free scales for coord_polar()
#5354
Merged
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This PR aims to fix #2815.
Briefly, it implements the suggestion to have
CoordPolar$is_free()
returnTRUE
.To deal with the aspect ratio, the requirement for fixed scales to have
Coord
s affect the aspect ratio is dropped. I have so far failed to come up with examples where this may lead to awkward situations, so I hope I'm avoiding Chesterton's Fence here. This requirement was originally implemented in cd11888, butcoord_equal()
's behaviour appears unaffected by this PR.Also, a complication arose in #2815 (comment). With this PR,
coord_equal()
can also have free scales infacet_grid()
, but these are of course locked to the column for x-axes and to the rows for y-axes (see also #1344 and #1152, which might be a topic revisiting separately from this PR). Becausetheta
can be either axis, it has no special relation with either horizontal or vertical directions, which makes this a bit awkward.