Hey GEOS community! I'm wondering if anyone has any sneaky/brilliant approaches on speeding up GEOS operations with complex input geometries. Right now I'm looking for a way to speed up a unary union operation with the order of 100 input polygons, each of which is quite complex. I'm currently throwing these all into GEOSUnaryUnion and relying on GEOS to internally do things the best way, but I suspect there IS some optimisations I could do to pre-process the geometries in order to speed up the actual union operation.
Has anyone any tips here? The other operation I'd like to optimise somehow is detecting whether gaps exist between a set of features. Currently the code is unioning all the input goemetries, then differencing it against the area of interest and checking if the result is empty. I suspect there's a much smarter way of doing this which would avoid the expense of the differencing operation, so I'd love to hear if anyone has any optimised approaches for handling this... Nyall _______________________________________________ geos-devel mailing list geos-devel@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/geos-devel
