GIS Dictionary

The ground unit of measurementfor example, feet, miles, meters, or kilometersin which coordinates of spatial data are stored.

[ESRI software] An ArcGIS Server software component that provides programmatic access to the contents of a map document on disk

[ESRI software] In ArcGIS, a user-assistance component that displays an on-screen description of a map feature when the mouse is

A symbol used to represent a point location on a map.

A geographic zone containing the people who are likely to purchase a firm’s goods or services.

A process that determines the percentage of a market area being reached based on the number of customers within an

[programming] The process that enables communication between a client object and server object in different apartments of the same process,

[ESRI software] In Internet mapping, the combination of content from more than one data source into one dynamic map service.

1 [cartography] In digital cartography, a means of covering or hiding features on a map to enhance cartographic representation. For

An irregularly distributed sample point, with an x-, y-, and z-value, used to build a triangulated irregular network (TIN). Ideally,

[database structures] In ArcGIS 9.1 and previous versions, the data version in the master geodatabase, created when data is checked