SF.net SVN: matplotlib:[6788] trunk/toolkits/basemap/lib/mpl_toolkits/ basemap/__init__.py

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

Revision: 6788
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6788&view=rev
Author:   jswhit
Date:     2009-01-16 16:22:16 +0000 (Fri, 16 Jan 2009)

Log Message:
-----------
added more informative error message when one of shapefile components can't be found.

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	2009-01-16 16:12:27 UTC (rev 6787)
+++ trunk/toolkits/basemap/lib/mpl_toolkits/basemap/__init__.py	2009-01-16 16:22:16 UTC (rev 6788)
@@ -1608,6 +1608,12 @@
         vertices. If ``drawbounds=True`` a 
         matplotlib.patches.LineCollection object is appended to the tuple.
         """
+        if not os.path.exists('%s.shp'%shapefile):
+            raise IOError('cannot locate %s.shp'%shapefile)
+        if not os.path.exists('%s.shx'%shapefile):
+            raise IOError('cannot locate %s.shx'%shapefile)
+        if not os.path.exists('%s.dbf'%shapefile):
+            raise IOError('cannot locate %s.dbf'%shapefile)
         # open shapefile, read vertices for each object, convert
         # to map projection coordinates (only works for 2D shape types).
         try:


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