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Author Topic: Vertical Ellipsoidal Datum  (Read 2033 times)

Fliegerbasti

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Vertical Ellipsoidal Datum
« on: September 12, 2016, 01:15:05 PM »
Hello,
It would be nice to support the vertical ellipsoidal datum in WKT-Files. Sometimes, the horizontal and vertical ellipsoid can be different.
 As a customer in Germany, it is not possible to receive a geoid file (TIFF) at no costs. But it is possible to calculate the undulation at any point, so the difference between the WGS84/GRS80 ellispoid and the defined vertical datum DHHN92 is known. But per horizontal definition, you are not using the WGS84 ellipsoid, instead you use the Bessel ellipsoid.

Thank you in advance,
Basti