Hi, Sorry for jumping in on this old thread. Wouldn't it be a really useful addition to QgsGeometry class? The current union is extremely slow when large number of geometries are processed. I also think this could be the real issue in slow dissolve in ftools.
I recently used this on my plugin. Roughly it is around 10 times faster then normal union. I hope we can introduce a new union method without breaking the existing union. Thanks Vinayan -- View this message in context: http://osgeo-org.1560.n6.nabble.com/new-geom-function-combine-cascaded-tp4112570p5033306.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
