The Datum class represents a set of parameters for describing a particular datum, including a name, the reference ellipsoid used and the seven parameters required to translate co-ordinates in this datum to the WGS84 datum.

Generic datum class represents a set of parameters for describing a particular datum, including a name, the reference ellipsoid used and the seven parameters required to translate co-ordinates in this datum to the WGS84 datum.

Class representing the European 1950 (ED50) datum.

Class representing the European Terrestrial Reference Frame (ETRF89) datum.

Class representing the Ireland 1965 datum.

Class representing the Ordnance Survey of Great Britain 1936 (OSGB36) datum.

Class representing the World Geodetic System 1984 (WGS84) datum.