I'm getting the same ST_Union error as Benicio but I know I have Spatialite (v.3.0.1-2), SQLite (3.7.10-2), and Geos (3.3.8-1) from my OSGeo4W install on Win7. I also tried using the GUnion function, which appears to have been replaced by ST_Union at 3.0.0. In fact, none of the spatial operator functions <http://www.gaia-gis.it/spatialite-3.0.0-BETA/spatialite-sql-3.0.0.html#p14> ) appear to work.
This is the first time I've tried implementing anything other than a format conversion or a simple select query using ogr. Could anyone suggest an ogr2ogr command to me that would test whether it's a Spatialite/Geos installation problem or simply a bug? Thanks, Dan Strobridge + ogr2ogr -append test6.shp poly.gmt --debug on -dialect sqlite -sql select ST_Union(Geometry),zone from poly GROUP BY zone OGR: OGROpen(poly.gmt/035FC9C0) succeeded as GMT. Shape: DBF Codepage = LDID/87 for test6.shp Shape: Treating as encoding 'ISO-8859-1'. OGR: OGROpen(test6.shp/03615808) succeeded as ESRI Shapefile. ERROR 1: Undefined function 'ST_Union' used. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-dev-Dissolve-shapefile-using-GDAL-OGR-tp5036930p5067633.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
