A Transformation can be defined as an mathematical operation which transforms some values into other values using a specified function. In geographic terms this means, that some incoming coordinate in a specified crs, must be transformed into a coordinate valid for some other crs.

The helmert transformation allows coordinate transformation with a datum shift by going to euclidean space and normalizing to WGS84, this normalizing is done by the helmert transformation.

@author Rutger Bezema @author last edited by: $Author: rbezema $ @version $Revision: 10829 $, $Date: 2007-03-20 10:15:15 +0100 (Di, 20 Mrz 2007)$