[Qgis-user] aggregate points within pre-defined grid squares
PB
pbrewin at fisheries.gov.fk
Sat Aug 18 17:43:25 PDT 2012
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.
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