GIS Dictionary

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Enterprise JavaBeans

[non-ESRI software] The server-side component architecture for the J2EE platform. EJB enables development of distributed, transactional, secure, and portable Java […]

envelope

The rectangle surrounding one or more geographical features in coordinate space, determined by the minimum and maximum coordinates in the

environment settings

[ESRI software] Settings that can apply to all tools within the application, all tools within a model or script, or

environment variable

[computing] A variable maintained by the operating system and shared among programs. Environment variables function as placeholders for environment information,

environmental model

An abstract representation of a complex environmental process, emphasizing relationships and patterns in natural systems. Environmental models allow decision makers

EOBrowser

[ESRI software] An ArcGIS utility application that can be used to investigate the contents of object libraries.

ephemeris

A table of the predicted positions of a satellite within its orbit for each day of the year, or for

EPSG ID

[coordinate systems] A coordinate system identification created by the European Petroleum Survey Group.

equal competition area

[business] A trade area boundary set halfway between a store or service point and its neighboring stores or service points.

equal-area classification

[cartography] A data classification method that divides polygon features into groups so that the total area of the polygons in

equal-area projection

A projection in which the whole of the map as well as each part has the same proportional area as

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