GIS Dictionary

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extent

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The minimum bounding rectangle (xmin, ymin and xmax, ymax) defined by coordinate pairs of a data source. All coordinates for […]

extent rectangle

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[ESRI software] A rectangle that is displayed in one data frame, showing the size and position of another data frame.

extract server

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[ESRI software] A private ArcIMS virtual server that clips data and saves it to a Zip file.

Extract wizard

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[ESRI software] An ArcToolbox wizard that selects features from a coverage based on attribute values to create a new coverage.

extraction guide

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[data management] A specification that defines parameters for feature extraction and attribution. Specifications typically include the size of features to

extrapolation

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[statistics] Using known or observed data to infer or calculate values for unobserved times, locations or other variables outside a

extrusion

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[3D analysis] The process of projecting features in a two-dimensional data source into a three-dimensional representation: points become vertical lines,

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