Erinevalt skaneerimisest võib ruumiandmeid koguda erinevate (ka sfääriliste koordinaatide) joonvõrkude sõlmpunktides mõõtmisi tehes, nii et ruumiliselt hõlmab mõõtmistega haaratud ala vaid väga väikese osa A kogupindalast.
In cartography, [grid is] any network of parallel and perpendicular lines superimposed on a map and used for reference. These grids are usually referred to by the map projection or coordinate system they represent, such as universal transverse Mercator grid.
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