Hi - I have a large set of points (x,y,z) on a map. Overlayed on the map is a grid that is currently a separate polygon shapefile layer (defined by lat/lons). What i'd like to do is aggregate the z values within each grid square (sum, mean, count, etc). I'm new-ish to GIS, and brand new to QGIS, have searched the archive, and tried a number of vector tools and queries but no joy. I have also tried converting layers to rasters, but things start getting weird quickly.
Any help would be great. Many thanks! Paul. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/aggregate-points-within-pre-defined-grid-squares-tp4996130.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
