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Geographic coordinate system

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Geographic Coordinate System

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Geographic Coordinate Systems

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GIS Lecture 4 : What is Geographic Coordinate System || Geoid Ellipsoid Latitude Longitude Altitude

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"Geographic Coordinate Systems" and "Projected Coordinate Systems" in ArcGIS and ArcMap

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How do geographical coordinates work?

A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position, and two or three of the numbers represent a horizontal position. A common choice of coordinates is latitude, longitude and elevation.
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    • History 

    • Geodetic datum 

    • Horizontal coordinates 

    • 3D Cartesian coordinates 

    • On other celestial bodies