Geographic Coordinate System

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A Geographic system is a latitude/longitude system defined in decimal degrees. Supported Geographic systems include:

  • NAD (North American Datum) 1927 and NAD 1988
  • 33 world ellipsoids and a user defined ellipsoid (i.e., Clarke 1866, WGS 1984, etc.)

The hemispheres are defined for non-NAD systems. The hemisphere cannot be changed for NAD systems (Northern, Western hemispheres).

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