Thank you for your advice Even, it works perfectly! i have another issue, what is the unit of dfDist from Buffer<http://www.gdal.org/ogr/classOGRGeometry.html#ab34b27e2c8812a0fc1dccf055b11d1a2> ?
On Tue, Oct 1, 2013 at 4:02 PM, Even Rouault <even.roua...@mines-paris.org>wrote: > Le lundi 30 septembre 2013 23:12:30, federico a écrit : > > Dear all, i'm trying buffer some geometries with GDAL. I have success > with > > poligons and lines but i can't create the buffer when i try to do the > same > > procedure with an OGRPoint. > > > > Here is a screenshot with the buffer http://i.imgur.com/rRQuooc.jpg > > > > I'm using the Buffer function from OGRGeometry Class in a map with WGS 84 > > coordinates reference system. > > > > Anyone know what could be wrong? > > This should work. Make sure your target layer can contain polygons. Your > code > sample isn't sufficient to detect what might go wrong in your case. > > Just a few remarks : you are going to suffer from 3 memory leaks in your > code > sample (if it isn't an extract of your real code) : > * Buffer() returns a new geometry object. So use SetGeometryDirectly() so > that > it is owned by pnewfeature > * you should delete pnewfeature after having passed it to CreateFeature() > * you should delete pfeature when it is no longer used > > > > > Code example > > > > OGRFeature *pfeature = player->GetNextFeature(); // Apunta al primer > > feature > > while (pfeature) { > > OGRFeature* pnewfeature = pfeature->Clone(); > > > > > pnewfeature->SetGeometry(pnewfeature->GetGeometryRef()->Buffer(bufferdist)) > > ; pdestlayer->CreateFeature(pnewfeature); > > pfeature = player->GetNextFeature(); > > } > > > > > > > > -- > > View this message in context: > > http://osgeo-org.1560.x6.nabble.com/Buffering-geometries-tp5081031.html > > Sent from the GDAL - Dev mailing list archive at Nabble.com. > > _______________________________________________ > > gdal-dev mailing list > > gdal-dev@lists.osgeo.org > > http://lists.osgeo.org/mailman/listinfo/gdal-dev > > -- > Geospatial professional services > http://even.rouault.free.fr/services.html > -- Federico Jurio SUR Emprendimientos Tecnológicos Perú 345 Piso 5to Oficina "B" (C1067AAG) Ciudad de Buenos Aires, Argentina Tel. +54 (11) 4342-2976/84 federicoju...@suremptec.com.ar www.suremptec.com
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev