Hi, first of all I'm collecting OGRGeometries from OGRFeatures. The OGRFeatures exist in a OGRLayer in which the function 'GDALContourGenerate' has written. I put these OGRGeometries (these geometries should later be painted) into a std::vector. Before putting the next OGRGeometry into this vector it shall be checked which neighbouring OGRGeometries the current OGRGeometry possesses. But I do not know how I get these (two) neighbouring OGRGeometries. Later on the distance to both OGRGeometries shall be calculated with help of the function 'OGR_G_Distance'. If the distance is too small the current OGRGeometry will not be put into the vector collecting OGRGeometries.
I hope you can get me and thanks for your support, Alex ________________________________________ Von: Chaitanya kumar CH [chaitanya...@gmail.com] Gesendet: Mittwoch, 7. Juli 2010 20:05 An: Alexander Plum Betreff: Re: [gdal-dev] Identification of neighbouring OGRGeometries Alex, Can you explain me what 'highline' means? On Wed, Jul 7, 2010 at 5:01 PM, Alexander Plum <alexander.p...@cae.de<mailto:alexander.p...@cae.de>> wrote: Look, I am working on a function which paints OGRGeometries representing highlines. Before painting them I want to make sure wether the new OGRGeometry should be painted or not. If the distance to the two neighbours is too near to its both neighbours, the new highlinie should not be painted. I am looking foward to employ the function OGR_G_Distance() for this case. But first of all I want to identify the new highline's two neighbours... Best regards, Alex ________________________________________ Von: Chaitanya kumar CH [chaitanya.ch<http://chaitanya.ch>@gmail.com<http://gmail.com>] Gesendet: Mittwoch, 7. Juli 2010 13:19 An: Alexander Plum Cc: gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org> Betreff: Re: [gdal-dev] Identification of neighbouring OGRGeometries Alex, If I understand you correctly, the method OGRGeometry::Touches() can help you. You can see it's description and similar functions at http://gdal.org/ogr/classOGRGeometry.html On Wed, Jul 7, 2010 at 2:17 PM, Alexander Plum <alexander.p...@cae.de<mailto:alexander.p...@cae.de><mailto:alexander.p...@cae.de<mailto:alexander.p...@cae.de>>> wrote: Hello there, is it possible to identify the two neighbouring OGRGeometries of another OGRGeometry?? Therefore I miss an adequate function in the GDAL-API. Greets, Alex -- This email was Anti Virus checked by CAE _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org><mailto:gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org>> http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9494447584 17.2416N 80.1426E -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9494447584 17.2416N 80.1426E
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