[Proj] Geodesics in terms of elliptic integrals

[support.mn at elisanet.fi]

Hello,

how accurate is the GeographicLib geoid separation calculation
anywhere on the earth?

Is it better than the EGM96 fortran 15 arc min bilinear implementation
which requires 2 Mb memory for the table?

Regards: Janne.

----------------------------------------------------------------------------------


Charles Karney [charles.karney at sri.com] kirjoitti: 
> GeographicLib now supports the solution of geodesic problems via
> elliptic integrals.  For details, see
> 
>    http://geographiclib.sf.net/html/geodesic.html#geodellip
> 
> This allows geodesics to be computed on ellipsoids with 0.01 < b/a <
> 100.
> 
> I know this will seen useless to you earthlings; however the work was
> done in response to a request from the European Molecular Biology
> Laboratory to support measuring distances on the surface of ellipsoidal
> molecules with b/a = 3.
> 
> -- 
> Charles Karney <charles.karney at sri.com>
> SRI International, Princeton, NJ 08543-5300
> 
> Tel: +1 609 734 2312
> Fax: +1 609 734 2662
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