SF.net SVN: matplotlib: [4483] trunk/toolkits/basemap/lib/matplotlib/ toolkits/basemap/basemap.py

[<js...@us...>]

Revision: 4483
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4483&view=rev
Author:   jswhit
Date:     2007-11-28 07:50:58 -0800 (Wed, 28 Nov 2007)

Log Message:
-----------
fix for orthographic projection.

Modified Paths:
--------------
    trunk/toolkits/basemap/lib/matplotlib/toolkits/basemap/basemap.py

Modified: trunk/toolkits/basemap/lib/matplotlib/toolkits/basemap/basemap.py
===================================================================
--- trunk/toolkits/basemap/lib/matplotlib/toolkits/basemap/basemap.py	2007-11-28 15:18:41 UTC (rev 4482)
+++ trunk/toolkits/basemap/lib/matplotlib/toolkits/basemap/basemap.py	2007-11-28 15:50:58 UTC (rev 4483)
@@ -688,7 +688,10 @@
             lon_0=self.projparams['lon_0']
             lat_0=self.projparams['lat_0']
             re = self.projparams['R']
-            maptran = pyproj.Proj(proj='stere',lon_0=lon_0,lat_0=lat_0,R=re)
+            # center of stereographic projection restricted
+            # to be one of 60 points on the sphere (every 45 deg lat/lon).
+            lon0 = 45*(int(lon_0)/45); lat0 = 45*(int(lat_0)/45)
+            maptran = pyproj.Proj(proj='stere',lon_0=lon0,lat0=lat_0,R=re)
             # boundary polygon for orthographic projection
             # in stereographic coorindates.
             b = self._boundarypolyll.boundary


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