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a systemic compilation of geographically referenced information, For the purposes of storage manipulation analysis and Presentation.
a table that is attached to an data layer displaying Specific characteristics For the map features
a set of physical interconnections between elements which remain unchanged under certain transformations.
the pictorial representation or method of representation of a curved surface onto a flat surface
a point of reference on the surface of the earth Corresponding to the size and shape of the ellipsoid approximation of the earth ( sharing the same center as the actual) upon which a particular coordinate system is based
a geographical component associated with a particular location, which can take the form of either points, lines, or polygons
one of the first datums, now outdated.
Like WGS 84, this is a good data associated with the ellipsoid of the earth called GRS80
a coordinate system set up for use in the United States, using feet as a unit of measurement helping for high accuracy with within a state, Giving each state its own point of origin
Universal transverse mercator, a world wide geographic Coordinate system using meters
Raster data model
an array of the equal size cells, or pixels, each having one value to represent a particular theme. Multiple layering is conducive to finding relationships between themes
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