I've resolved - I hadn't set g.region aligning to the raster prior to v.to.rast:
This appears to work,with outputs from r.univar matching v.rast.stats: g.region -p -a raster=cahpa_i0apr_05216_nc_remapped_nc_1@prcp05216ijk res=0.22 g.region -p align=cahpa_i0apr_05216_nc_remapped_nc_1@prcp05216ijk v.to.rast --overwrite input=BMR_bndry_epsg4326@prcp05216ijk type=area output=BMR_bndry_epsg4326_rasterized use=cat r.univar -g -t map=cahpa_i0apr_05216_nc_remapped_nc_1@prcp05216ijk zones=BMR_bndry_epsg4326_rasterized@prcp05216ijk v.rast.stats map=BMR_bndry_epsg4326@prcp05216ijk raster=cahpa_i0apr_05216_nc_remapped_nc_1@prcp05216ijk column_prefix=test method=number,minimum,maximum,range,average,sum -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Searching-for-technical-details-on-how-v-rast-stats-calculates-means-and-other-statistics-tp5188809p5189189.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user