[Proj] ED50 Spain Portugal to WSG 84

Roger Oberholtzer roger at opq.se
Fri Mar 20 09:50:25 EST 2009

On Fri, 2009-03-20 at 14:59 +0100, Marc Marí Dell'Olmo wrote:
> Dear all,
> Can anyone tell me how to convert coordinates ED50 Spain/Portugal (not
> only ED50) to  WSG84 (google maps coordinates). I'm new in these
> issues.

Perhaps something like:

 +towgs84=-125.098545,-76.000054,-156.198703,0.0,0.0,-1.129,8.30463103 "

I do this from the C API, so I may have a command line option missing.
But the values are what I use.

Hope this gets you started.

Roger Oberholtzer

OPQ Systems / Ramböll RST

Ramböll Sverige AB
Krukmakargatan 21
P.O. Box 17009
SE-104 62 Stockholm, Sweden

Office: Int +46 8-615 60 20
Mobile: Int +46 70-815 1696

More information about the Proj mailing list