Merge pull request #323 from krischer/drawgreatcircle-regression

drawgreatcircle() now correctly returns a Line2D object

Author: WeatherGod

lib/mpl_toolkits/basemap/__init__.py

@@ -2860,7 +2860,8 @@ def drawgreatcircle(self,lon1,lat1,lon2,lat2,del_s=100.,**kwargs):
                          method of Basemap instance.
         ==============   =======================================================
 
-        Returns a matplotlib.lines.Line2D object.
+        Returns a list with a single ``matplotlib.lines.Line2D`` object like a
+        call to ``pyplot.plot()``.
         """
         # use great circle formula for a perfect sphere.
         gc = pyproj.Geod(a=self.rmajor,b=self.rminor)
@@ -2877,7 +2878,8 @@ def drawgreatcircle(self,lon1,lat1,lon2,lat2,del_s=100.,**kwargs):
         # Correct wrap around effect of great circles
 
         # get points
-        p = self.plot(x,y,**kwargs)[0].get_path()
+        _p = self.plot(x,y,**kwargs)
+        p = _p[0].get_path()
 
         # since we know the difference between any two points, we can use this to find wrap arounds on the plot
         max_dist = 1000*del_s*2
@@ -2900,7 +2902,7 @@ def drawgreatcircle(self,lon1,lat1,lon2,lat2,del_s=100.,**kwargs):
             p.codes = None
             p.vertices = verts
 
-        return p
+        return _p
 
     def transform_scalar(self,datin,lons,lats,nx,ny,returnxy=False,checkbounds=False,order=1,masked=False):
         """