[geos-devel] python.i doesn't exist... why?

[Charlie Savage]

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 at savagexi.com> 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
> 
> 		
> _______________________________________________________ 
> Abra sua conta no Yahoo! Mail: 1GB de espaço, alertas de e-mail no celular e anti-spam realmente eficaz. 
> http://mail.yahoo.com.br/
> _______________________________________________
> geos-devel mailing list
> geos-devel at geos.refractions.net
> http://geos.refractions.net/mailman/listinfo/geos-devel
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3237 bytes
Desc: S/MIME Cryptographic Signature
Url : http://lists.osgeo.org/pipermail/geos-devel/attachments/20060605/91fdcf08/smime.bin