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Support sub-classes of spherical representation classes #177

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Aug 20, 2015
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Support sub-classes of spherical representation classes #177

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272d9ac
Support sub-classes of spherical representations
astrofrog Aug 20, 2015
077394a
Add changelog entry [ci skip]
astrofrog Aug 20, 2015
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3 changes: 3 additions & 0 deletions CHANGES.md
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Expand Up @@ -4,6 +4,9 @@
- Use wcs_to_celestial from Astropy. Astropy >= 1.0 is now required for
WCSAxes. [#176]

- Fix bug that caused coordinate transformations to not work properly if they
used sub-classes of Spherical representation classes. [#177]

0.6 (2015-07-20)
----------------

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3 changes: 1 addition & 2 deletions wcsaxes/transforms.py
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Expand Up @@ -244,8 +244,7 @@ def transform(self, input_coords):

c_out = c_in.transform_to(self.output_system)

if (c_out.representation is SphericalRepresentation or
c_out.representation is UnitSphericalRepresentation):
if issubclass(c_out.representation, (SphericalRepresentation, UnitSphericalRepresentation)):
lon = c_out.data.lon.deg
lat = c_out.data.lat.deg
else:
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