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Allow rotations and flips of 'x axis' in Geo projections #4515

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adrn opened this issue Jun 12, 2015 · 3 comments
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Allow rotations and flips of 'x axis' in Geo projections #4515

adrn opened this issue Jun 12, 2015 · 3 comments

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@adrn
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adrn commented Jun 12, 2015

The transformations that subclass GeoAxes could allow rotations by arbitrary angles and flips.

Right now, the axes are fixed to be centered on longitude=0 with a range from -180 to 180, but it would be incredibly useful (at least to astronomers) to

  1. allow rotations in longitude so that, e.g., the plot could be centered on arbitrary longitudes, and
  2. allow flipping the x (longitude) axis so that they increase to the left

This is somewhat related to #1856.

I started digging in to how I might implement this myself, but am totally unfamiliar with what is going on in lib/matplotlib/projections/geo.py...

cc @mdboom

@pelson
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pelson commented Jun 12, 2015

@adrn - have you taken a look at cartopy? 1. is already implemented, and 2. should be reasonably straightforward given the machinery already available.

@pelson
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pelson commented Jun 12, 2015

For that matter, does wcsaxes fit the bill?

@tacaswell tacaswell added this to the unassigned milestone Jun 19, 2015
@tacaswell
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Closing as out-of-scope for mpl core.

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