Multi-Attribute Data is a vector-based inventory of the landscape comprising polygon and linear; features. This system of mapping describes a number of attributes (such as slope, terrain, land; use, vegetation community, presence of tree regrowth, soil erosion, rock outcrops, weed; species and soil conservation measures) into one polygon. The value of attribute mapping lies; in the fact that the data, which objectively characterises the land, can be used for a variety of; purposes. This translates into the availability of a range of derivative maps. Mapping is typically; carried out at 1:25 000 scale using topographic maps as a base. Outputs are most useful at the; sub-catchment or regional scale but not generally at the property level.