[Proj] geoid-ellipsoid height conversion

José Alberto Gonçalves jagoncal at fc.up.pt
Thu Feb 16 10:15:52 EST 2006

Dear Rachid

Proj doesn't do height conversions between geoid and ellipsoid 
references. For that you should use a geopotential model, such as 
EGM-96. You can use the link:


to estimate the geoid height for a given point.


Jose' Gonçalves

Rachid Rahmoune wrote:

>Dear all,
>I am a new user of the Proj software, so could anyone help me about the
>geoid-ellipsoid height conversion with the proj software.
>Best Regards
>Proj mailing list
>Proj at lists.maptools.org

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