Re: python.i doesn't exist... why?

Hi Pablo,

Ok - that's because the swig files assume there is a readHex method. 
This will be fixed for 3.0, sorry about the problems in 2.2.0.

Anyway, to manually fix open geos.i in the swig directory:

1. Comment out line 166 which is:

%newobject WKBReader::readHEX;

2.  Comment out line 186-190:

%factory(geos::Geometry * geos::WKBReader::readHEX, geos::Point,
                                 geos::LinearRing, geos::LineString,
                                 geos::Polygon,
                                 geos::MultiPoint,      
                                 geos::MultiLineString,
                                 geos::MultiPolygon,
                                 geos::GeometryCollection);

3. Comment out lines 297 to the end of the file:

%extend geos::Geometry {
        static geos::GeometryFactory& factory()
        {
                static geos::GeometryFactory factory;
                return factory;
        }

        static geos::WKBReader& reader()
        {
                #if GEOS_VERSION_MAJOR == 2
                static geos::WKBReader reader(geos_Geometry_factory());
                #else
                static geos::io::WKBReader reader(geos_Geometry_factory());
                #endif
                return reader;
        }

        static Geometry* fromWKT(std::string wkt)
        {
                std::stringstream in(wkt);
                return geos_Geometry_reader().read(in);
        }
        
        static Geometry* fromHEX(std::string hex)
        {
                std::stringstream in(hex);
                return geos_Geometry_reader().readHEX(in);
        }
};

Thanks,

Charlie


Pablo Souza Grigoletti wrote:
> Hi Charlie,
>
> I did what you said:
>
> - mv geos_wrap.cxx geos_wrap.cxx.old
> - I created python.i with the code that you gave me. 
> - swig -c++ -python -modern -o geos_wrap.cxx ../geos.i
>
>
> ../../source/headers/geos/geom.h:671: Warning(509): Overloaded
> geos::CoordinateS equence::hasRepeatedPoints(geos::CoordinateSequence
> const *) is shadowed by hasR epeatedPoints() const at
> ../../source/headers/geos/geom.h:658.
> ../../source/headers/geos/geom.h:684: Warning(509): Overloaded
> geos::CoordinateS equence::minCoordinate(geos::CoordinateSequence *) is
> shadowed by minCoordinate( ) const at
> ../../source/headers/geos/geom.h:661.
>
>
> - python setup.py build
>
>
> ...
> geos_wrap.cxx: In function 'geos::Geometry*
> geos_Geometry_fromHEX(std::string)': geos_wrap.cxx:4417: error: 'class
> geos::WKBReader' has no member named 'readHEX' geos_wrap.cxx: In
> function 'PyObject* _wrap_Geometry_srid_set(PyObject*, PyObjec t*)':
> geos_wrap.cxx:24176: warning: passing 'double' for argument 1 to
> 'virtual void g eos::Geometry::setSRID(int)' error: command 'gcc' failed
> with exit status 1
>
>
> As you said me, a problem with readHEX happened.
> do you have any suggestion?
>
> Ahh, I have the SWIG right version:
>
>
> # swig -version
> SWIG Version 1.3.29
>
>
> Best regards.
> Pablo
>
>
> On Mon, 05 Jun 2006 21:21:17 -0600
> Charlie Savage <cfis@xxxxxxxxxxxx> wrote:
>
> > Hi Pablo,
> >
> > Sorry not to respond sooner - I just got back from vacation.
> >
> > What python.i is used for is to generate geos_wrap.cxx using SWIG.  If
> >
> > you look, you'll see that file exists.  So theory you could get by 
> > without python.i and just run the part of the build script that 
> > builds/installs the extensions.
> >
> > However, there unfortunately there is a problem with that because the 
> > geos_wrap.cxx file includes pointers to a method called readHex which 
> > does not actually exist in geos 2.2.2 (well, it does in my version but
> >
> > no release version).
> >
> > So I'd recommend:
> >
> > Create python.i in your swig/python directory.  Then put this code
> > into it:
> >
> > %template(vector_GeometryP) std::vector<geos::Geometry *>;
> > %template(vector_LineStringP) std::vector<geos::LineString *>;
> > %template(vector_PolygonP) std::vector<geos::Polygon *>;
> >
> > Then make sure you have swig 1.3.29 installed.  Then try the build 
> > script again.  You may also want to delete geos_wrap.cxx before you
> > start.
> >
> > Hope this helps,
> >
> > Charlie
>
>                 
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