As far as I know, the win32 installers since 1.2b7 have included GEOS 3.2.2. You can check like this:
>>> from shapely.geos import lgeos >>> lgeos.geos_capi_version (1, 7, 0) That's the C API version. The GEOS library version can be had like >>> lgeos._lgeos.GEOSversion() '3.3.0-CAPI-1.7.0' Cheers, On Fri, Jun 25, 2010 at 1:07 PM, Emmanuel Lambert <[email protected]> wrote: > Sean, > > Any plans to release Windows binaries with GEOS 3.2.2 ? > Now I'm still stuck for our Windows users... > > thanks, > Emmanuel > > > On Fri, 2010-06-25 at 13:04 +0200, Sean Gillies wrote: >> GEOS 3.2.2 should be fine. >> >> Cheers, >> >> On Fri, Jun 25, 2010 at 12:52 PM, Emmanuel Lambert >> <[email protected]> wrote: >> > Hello Sean >> > >> > Thanks for you reply. I was also just about to add a follow-up comment. >> > >> > I upgraded my system to GEOS 3.2.2 (compile from source) and apparently >> > that solved the problem. So I guess it was an issue of libgeos. >> > Can I assume that Shapely 1.2.1 works fine with GEOS 3.2.2 ? >> > I experience no issues at this time, but would appreciate your feedback >> > on this. >> > >> > wbr >> > Emmanuel >> > >> > >> > On Fri, 2010-06-25 at 12:46 +0200, Sean Gillies wrote: >> >> 2010/6/24 Emmanuel Lambert <[email protected]>: >> >> > Hi, >> >> > >> >> > Attached is a list of polygons in WKT format. >> >> > I have a MultiPolygon consisting of these polygons. >> >> > >> >> > The cascaded_union function failes on this multipolygon. >> >> > "ValueError: No Shapely geometry can be created from null value" >> >> > >> >> > Script to reproduce the problem : >> >> > >> >> > from shapely.wkt import loads >> >> > from shapely.geometry import Polygon,MultiPolygon >> >> > from shapely.ops import cascaded_union >> >> > >> >> > f = open('MULTIPOLYGON.TXT','r') >> >> > polygons = [] >> >> > while True: >> >> > wkt = f.readline().replace("\n","") >> >> > print wkt >> >> > if len(wkt)==0: >> >> > break >> >> > pol = loads(wkt) >> >> > polygons.append(pol) >> >> > >> >> > mp = MultiPolygon(polygons) >> >> > up = cascaded_union(mp) >> >> > >> >> > I have tried several strategies to work around it, but cannot get to a >> >> > solution. Is this a bug in shapely, or is something wrong with my data? >> >> > Your advice would be appreciated. >> >> > >> >> > (Shapely 1.2.1) >> >> > >> >> > Thanks, >> >> > >> >> > Emmanuel >> >> > >> >> >> >> Hi Emmanuel, >> >> >> >> Before I try to reproduce this, can you run the script again and >> >> assert that each polygon is valid within the loop? >> >> >> >> pol = loads(wkt) >> >> assert pol.is_valid >> >> polygons.append(pol) >> >> >> > >> > >> > >> >> >> > > > -- Sean _______________________________________________ Community mailing list [email protected] http://lists.gispython.org/mailman/listinfo/community
