g.region raster=elevation -p v.random output=rand5k_elev n=5000 v.db.addtable map=rand5k_elev column="elevation double precision" v.what.rast vect=rand5k_elev rast=elevation column=elevation # verify absence of some elevation attributes ("number of NULL attributes"): v.univar rand5k_elev type=point column=elevation # Remove all vector points lacking elevation attribute v.db.droprow rand5k_elev output=rand5k_elev_filt where="elevation IS NULL" # verify: v.univar rand5k_elev_filt type=point column=elevation
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