• SEVENPAR - Spatial Helmert Transformation
•  Brief Description of the Current Version
•  Program Description
•  Screenshots
•  Download SEVENPAR
•  Prices SEVENPAR
•  Order SEVENPAR

Calculation of seven parameters with the Spatial Helmert Transformation

SEVENPAR is a tool for the calculation of highly exact seven transformation parameters for the Spatial Helmert 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 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 or geographical 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-axis are available in the program for the selection from lists.

The coordinates of the identical points are tested intensively on outliers and deviations by different statistic procedures. The quality of the computed seven parameters of the Spatial Helmert Transformation is documented by a residual matrix and by the computation of the middle, maximum and root mean square (RMS) deviations.

The seven parameters of the Spatial Helmert Transformation are calculated in the three most usual standards. Those are the Coordinate Frame Rotation, the Position Vector Transformation and the European Standard ISO 19111.

The program SEVENPAR is equipped with an up-to-date graphic user surface which handling can be understood intuitively. For each window detailed help texts can be shown. The user surface can be switched between German and English language.

The program SEVENPAR can be run on most common networks. The client installations works automatically. It is possible to use Terminal Services on WINDOWS Servers like e.g. "Citrix Terminal Server".

Pricing, ordering and licensing

Pricing and ordering information can be found in the  Price list. For available licensing options have a look to the  License page. Order the program with the electronic  Order Form.

Download of the test version

The free test version of the program with a detailed user manual can be  downloaded as ZIP packed file by the Internet. For unpacking the download file you need an unzip program, which you can download  from this side.