Hi all, How can I union several shapefiles into one using ogr? I tried using the OGR Virtual Format and created a XML file similar to this:
<OGRVRTDataSource> <OGRVRTUnionLayer name="unionLayer"> <OGRVRTLayer name="source1"> <SrcDataSource>source1.shp</SrcDataSource> </OGRVRTLayer> <OGRVRTLayer name="source2"> <SrcDataSource>source2.shp</SrcDataSource> </OGRVRTLayer> </OGRVRTUnionLayer> </OGRVRTDataSource> My next step was to call ogr2ogr to created the new file. The above XML merges all shapes instead of performing an union. How can I do a proper union using ogr? Thanks, Paul
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