GIS Dictionary

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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

erase

[ESRI software] In ArcInfo, a command that removes or deletes features from one coverage that overlap features in another coverage.

error

1 [data quality] A measured, observed, calculated, or interpreted value that differs from the true value or the value that

error propagation

1 [uncertainty] In GIS data processing, the persistence of an error into new datasets calculated or created using datasets that

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