[Proj] How to convert a sphere to ellipsoid with correct datum?

[support.mn at elisanet.fi]

Hello,

You could start reading this:

http://en.wikipedia.org/wiki/Helmert_transformation#Calculating_the_parameters

"This gives a system of linear equations with seven equations and seven unknowns, which can be solved."

and continue here:

http://en.wikipedia.org/wiki/System_of_linear_equations

check also the links given there.

regards: Janne

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Jan Hartmann [j.l.h.hartmann at uva.nl] kirjoitti:
> Hi Janne,
> Where do I find those methods?
> Jan