Dear all,
I am exporting grass map into R thanks to the very useful spgrass6 package.
library(spgrass6)
# I have 3 map I am working with a MASK map of a specific area.
# 1) a landuse map
landuse<-readRAST6("landuse_mapname_in_grass")
# 2) a catchment map which divide the area in several catchements
catchment<-readRAST6("catchement_mapname_in_grass")
# 3) a precipitation map
precipitation<-readRAST6("precipitation_mapname_in_grass")
# then I would like to sum the precipitation spatialy over each catchment
and landuse. So, first I cbind all maps with cbind
MAP<-cbind(Dear all,