GIS Dictionary

[federal government] A statistical division of a county recognized by the U.S. Census Bureau for data presentation. County subdivisions can […]

[statistics] A statistical measure of the linear relationship between two variables. Covariance measures the degree to which two variables move

[ESRI software] A data model for storing geographic features. A coverage stores a set of thematically associated data considered to

In ArcInfo, a classification describing the format of geographic features and supporting data in a coverage. Feature classes include point,

[coordinate systems] The units of the coordinate system in which a coverage is stored (for example, feet, meters, inches).

[data editing] In ArcGIS, a part of the topology validation process in which vertices are created at the intersection of

1 [surveying] A special-case, least-squares-based method for adjusting the closure error in a traverse. The Crandall rule is most frequently

[ESRI software] In Survey Analyst for field measurements, an attribute of the computation that records the date of origin.

[ESRI software] In Survey Analyst for field measurements, an attribute of the computation that records the date of origin.

[ESRI software] The time it takes to initialize an instance of a server object when server objects are created in

[spatial statistics use for geostatistics] The specific cutoff point that determines acceptance or rejection of a hypothesis. Critical values are