GIS Dictionary

[ESRI software] A DBMS-defined restriction specifying that each value stored in a column must be unique and that no other […]

[standards] A standard quantity used for measurements such as length, area, and height.

[statistics] Any statistical method for evaluating a single variable, rather than the relationship between two or more variables.

[statistics] A function for a single variable that gives the probabilities that the variable will take a given value.

A kriging method often used on data with a significant spatial trend, such as a sloping surface. In universal kriging,

[coordinate systems] A projected coordinate system that covers all regions not included in the UTM coordinate system; that is, regions

An erosion model developed by the Agricultural Research Service of the United States Department of Agriculture that computes average annual

[astronomy] A timekeeping system that defines local time throughout the world by relating it to time at the prime meridian.

[data models] In coverages, the first record in a polygon attribute table, representing the area beyond the outer boundary of

[astronomy] The number of seconds, in coordinated universal time format, since January 1, 1970 (the start of the UNIX system).

[ESRI software] In Survey Analyst – Cadastral Editor, a parcel that has not been connected to the cadastral fabric, and