GIS Dictionary | Letter B

– B –

Base Map
The base map is the most accurate spatial database within a data system. Base maps tend to be streets, parcels and other fundamental layers. Because base maps tend to serve as the point of reference when creating other spatial databases, they tend to have the highest level of accuracy.

Bearing
The direction of a line expressed in degrees and cardinal points.

Brownfields
Abandoned, lightly contaminated properties often found in economically distressed areas.

Buffer
A zone of a specified distance around features in a geographic layer. Buffers can be set at constant or variable distance based on feature attributes. The resulting buffer zones form polygonal coverages.

More geographic concepts from the GIS dictionary:

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

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