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Entities: map (3)
Table 1. Data types
data type | description attributes | domain | example |
|---|---|---|---|
boolean | boolean | 0 (false), 1 (true) | suitable/unsuitable, visible/non visible |
nominal | classified, no order | 0...255, whole values | soil classes, administrative regions |
ordinal | classified, order | 0...255, whole values | succession stages, income groups |
scalar | continuous, lineair | - 10exp(37)...10exp(37), real values | elevation, temperature |
directional | continuous, directional | 0 to 2 pi (radians), or to 360 (degrees), and -1 (no direction), real values | aspect |
ldd | local drain direction to neighbour cell | 1...9 (codes of drain directions) | drainage networks, wind directions |