SEVENPAR is a tool for the calculation of highly exact
transformation parameters for the Spatial Helmert and
Molodensky Transformation, which make possible precise
coordinate transformations from one reference system
into another. The determined transformation parameters
can be entered directly into suitable transformation
software, e.g. TRANSDAT Coordinate Transformations, or
into the calculation software of GPS receivers to do
exact coordinate transformations. The seven or three
transformation parameters are computed with a set of
individual identical points. Those are points with
known coordinates in both reference systems (geodetic
datum). Cartesian coordinates, geographical
coordinates or UTM coordinates with or wihtout
ellipsoidal height using the ellipsoid dimensions are
suitable. Identical measuring points of higher order
can be usually inquired or referred by the official
institutions for measurement. The necessary ellipsoid
half-axes and flattenings are available in the program
for the selection from lists. The coordinates of the
identical points are tested intensively on outliers

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