18. November 2007Coordinates are variables form the analytical geometry to describe positions in a coordinate
system.
Coordinate Systems are geometric structure elements and reference systems for coordinates.
Special coordinate systems are used in describing mathematically shape and size of geodetic
earth models or in map projections.
Coordinate Reference Systems are coordinate systems in combination of a spatial datum to
describe spatial position through spatial coordinates.
A spatial datum describes the position, size and orientation of a coordinate system regarding to
the physical or geographical earth.
related information
