I use MultiPolygon to execute polygons boolean operation in Python by Shapely
1.0.12.
multipolygon1 = MultiPolygon(....)
multipolygon2 = MultiPolygon(....)
multipolygon3 = multipolygon1.intersection(multipolygon2)
python return the following information:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/export/eda/edatools/linux/tools/lib/python2.6/site-packages/Shapely-1.0.12-py2.6.egg/shapely/topology.py",
line 24, in __call__
"The operation '%s' produced a null geometry. Likely cause is invalidity
of the geometry %s" % (self.fn.__name__, repr(context))
shapely.geos.TopologicalError: The operation 'GEOSIntersection' produced a
null geometry. Likely cause is invalidity of the geometry
<shapely.geometry.multipolygon.MultiPolygon object at 0x10d6c050>
I guess in the operation (intersection), it generated invalid polygon, so it
can't finish the operation. But before executing the operation, how can I
know it will generate illegal polygon?
Thanks
--
View this message in context:
http://www.nabble.com/issue-of-MultiPolygon-operation-in-Shapely-1.0.12-tp25167247p25167247.html
Sent from the PrimaGIS mailing list archive at Nabble.com.
_______________________________________________
Community mailing list
[email protected]
http://lists.gispython.org/mailman/listinfo/community
