Revision: 8880
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8880&view=rev
Author: jswhit
Date: 2011-01-04 14:05:31 +0000 (Tue, 04 Jan 2011)
Log Message:
-----------
beginnings of support for astronomical conventions for longitude (via
'celestial'
keyword).
Modified Paths:
--------------
trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py
Modified: trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py
===================================================================
--- trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py 2011-01-04
00:45:25 UTC (rev 8879)
+++ trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py 2011-01-04
14:05:31 UTC (rev 8880)
@@ -255,6 +255,8 @@
Allowed values are
``C``, ``SW``, ``S``, ``SE``, ``E``, ``NE``,
``N``, ``NW``, and ``W``.
+ celestial use astronomical conventions for longitude (i.e.
+ negative longitudes to the east of 0). Default False.
ax set default axes instance
(default None - matplotlib.pyplot.gca() may be used
to get the current axes instance).
@@ -443,6 +445,7 @@
boundinglat=None,
fix_aspect=True,
anchor='C',
+ celestial=False,
ax=None):
# docstring is added after __init__ method definition
@@ -451,6 +454,8 @@
self.fix_aspect = fix_aspect
# where to put plot in figure (default is 'C' or center)
self.anchor = anchor
+ # geographic or celestial coords?
+ self.celestial = celestial
# map projection.
self.projection = projection
@@ -887,8 +892,13 @@
Input arguments lon, lat can be either scalar floats,
sequences, or numpy arrays.
"""
- return self.projtran(x,y,inverse=inverse)
+ if self.celestial and not inverse:
+ x = -x
+ xout,yout = self.projtran(x,y,inverse=inverse)
+ if self.celestial and inverse:
+ xout = -xout
+
def makegrid(self,nx,ny,returnxy=False):
"""
return arrays of shape (ny,nx) containing lon,lat coordinates of
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