[geos-devel] Building the geos bindings for python 2.5

[Sean Gillies]

joanne matthews (RRes-Roth) wrote:
> Can anyone explain how I build the geos bindings for python 2.5 on
> windows. I have no experience with c and just enough swig to get me by,
> so I'm following the readme instructions in the swig/python directory.
> This is what Ive done so far:
> 
> Cd C:\geos-2.2.1\swig\python
> swig -c++ -python -modern -o geos_wrap.cxx ../geos.i
> 
> Here's the error message:
> 
> ..\..\source\headers\geos\geom.h(622): Warning(509): Overloaded
> add(geos::Coord
> nateSequence const *,bool,bool) is shadowed by
> add(geos::CoordinateSequence *,b
> ol,bool) at ..\..\source\headers\geos\geom.h:612.
> ..\..\source\headers\geos\geom.h(671): Warning(509): Overloaded
> geos::Coordinat
> Sequence::hasRepeatedPoints(geos::CoordinateSequence const *) is
> shadowed by ha
> RepeatedPoints() const at ..\..\source\headers\geos\geom.h:658.
> ..\..\source\headers\geos\geom.h(684): Warning(509): Overloaded
> geos::Coordinat
> Sequence::minCoordinate(geos::CoordinateSequence *) is shadowed by
> minCoordinat
> () const at ..\..\source\headers\geos\geom.h:661.
> ..\..\source\headers\geos\geom.h(2354): Warning(509): Overloaded
> createPoint(ge
> s::CoordinateSequence const &) const is shadowed by
> createPoint(geos::Coordinat
> Sequence *) const at ..\..\source\headers\geos\geom.h:2351.
> ..\..\source\headers\geos\geom.h(2363): Warning(509): Overloaded
> createGeometry
> ollection(vector<geos::Geometry * > const &) const is shadowed by
> createGeometr
> Collection(vector<geos::Geometry * > *) const at
> ..\..\source\headers\geos\geom
> h:2360.
> ..\..\source\headers\geos\geom.h(2372): Warning(509): Overloaded
> createMultiLin
> String(vector<geos::Geometry * > const &) const is shadowed by
> createMultiLineS
> ring(vector<geos::Geometry * > *) const at
> ..\..\source\headers\geos\geom.h:236
> .
> ..\..\source\headers\geos\geom.h(2381): Warning(509): Overloaded
> createMultiPol
> gon(vector<geos::Geometry * > const &) const is shadowed by
> createMultiPolygon(
> ector<geos::Geometry * > *) const at
> ..\..\source\headers\geos\geom.h:2378.
> ..\..\source\headers\geos\geom.h(2390): Warning(509): Overloaded
> createLinearRi
> g(geos::CoordinateSequence const &) const is shadowed by
> createLinearRing(geos:
> CoordinateSequence *) const at ..\..\source\headers\geos\geom.h:2387.
> ..\..\source\headers\geos\geom.h(2399): Warning(509): Overloaded
> createMultiPoi
> t(vector<geos::Geometry * > const &) const is shadowed by
> createMultiPoint(vect
> r<geos::Geometry * > *) const at ..\..\source\headers\geos\geom.h:2396.
> ..\..\source\headers\geos\geom.h(2411): Warning(509): Overloaded
> createPolygon(
> eos::LinearRing const &,vector<geos::Geometry * > const &) const is
> shadowed by
> createPolygon(geos::LinearRing *,vector<geos::Geometry * > *) const at
> ..\..\so
> rce\headers\geos\geom.h:2408.
> ..\..\source\headers\geos\geom.h(2420): Warning(509): Overloaded
> createLineStri
> g(geos::CoordinateSequence const &) const is shadowed by
> createLineString(geos:
> CoordinateSequence *) const at ..\..\source\headers\geos\geom.h:2417.
> ..\..\source\headers\geos\geom.h(2426): Warning(509): Overloaded
> buildGeometry(
> ector<geos::Geometry * > const &) const is shadowed by
> buildGeometry(vector<geo
> ::Geometry * > *) const at ..\..\source\headers\geos\geom.h:2423.
> 
> Any advice appreciated.
> _______________________________________________
> geos-devel mailing list
> geos-devel at geos.refractions.net
> http://geos.refractions.net/mailman/listinfo/geos-devel
> 

Joanne,

The best supported GEOS-based Python geometry package is PCL's 
cartography.geometry. It depends only on the GEOS C API, not on SWIG, 
and has been successfully built and used on Windows as well as Linux.

The API is demonstrated in the PCL tests:

http://trac.gispython.org/projects/PCL/browser/PCL/tags/rel-0.11.0/PCL-Core/tests/Geometry.txt
http://trac.gispython.org/projects/PCL/browser/PCL/tags/rel-0.11.0/PCL-Core/tests/testpygeom.py

and my motivations for switching from the GEOS SWIG bindings (which I 
originally wrote) to a new module are explained at

http://zcologia.com/news/150.

PCL version 0.11 is available from

http://gispython.org/downloads/gispy/

Have you yet successfully built the GEOS C DLL on Windows? If so, 
building the PCL core should be a breeze, and I will be happy to help.

Cheers,
Sean

-- 
Sean Gillies
http://zcologia.com/news