GIS Dictionary

vagueness

In GIS, a state of uncertainty in data classification that exists when an attribute applies to an indeterminate quality ...

validation

1 The process, using formal methods, of evaluating a system or software component to determine whether it functions as ...

value

1 A measurable quantity that may be passed to a function. Values are either assigned or determined by calculation. ...

variable

1 A symbol or placeholder that represents a changeable value or a value that has not yet been assigned. ...

variance

A numeric description of how values in a distribution vary or deviate from the mean. The larger the variance, ...

VAT

Acronym for value attribute table. A table containing attributes for a grid, including user-defined attributes, the values assigned ...