GIS Dictionary

[data capture] A line that falls short of another line that it should intersect.

[map projections] A surface, such as the earth’s, that cannot be flattened into a map without stretching, tearing, or squeezing

[network analysis] A network state in which each edge may or may not have an associated direction of flow. In

[ESRI software] In Survey Analyst for field measurements, one of two types of lists in the List page. The uniform

[ESRI software] A condition that occurs in a network when an edge feature is not connected through the network to

[analysisgeoprocessing] A topological overlay of two or more polygon spatial datasets that preserves the features that fall within the spatial

[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,