Hi, I have been trying to figure out how to construct a raster attribute table with multiple columns in a SpatRaster in terra.
I have the process in raster::raster(), but when attempting in terra only the first attribute is retained in the table. I have seen the posting here: https://gis.stackexchange.com/questions/391215/attribute-table-in-r-terra-package that deals with one attribute. I cannot see the mentioned extended workaround – Robert Hijmans <https://gis.stackexchange.com/users/8993/robert-hijmans> Mar 30, 2021 at 3:59 <https://gis.stackexchange.com/questions/391215/attribute-table-in-r-terra-package#comment642240_392453> that may deal with multiple attribute columns . r<-terra::rast(matrix(sample(1:3,100,replace=T),10,10)) R<-raster::raster(r) rat<-data.frame(ID=1:3,Val1=letters[1:3],Val2=LETTERS[8:10]) #Assign rat to r levels(r)<-rat # r has categories Val1, Val2 but table only shows column for ID and Val1 r levels(r) #in package raster full attribute table is attached R<-raster::ratify(R) levels(R)<-rat R levels(R) [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
