Hi,

I have to convert from ED50 to wgs84 in order to place my point in mappoint.
Do you have the algorythm or is the Geodesy lib doing that ?

Sorry for my poor english, I'm French

I did a quick search on Google and found some stuff.

If you're not scared of math:
http://forskning.kms.dk/~geod/REF/3drefdk.htm
http://www.posc.org/Epicentre.2_2/Da...e/eu_cs35.html

Here's a program that might do what you need:
http://www.wasp.dk/WAsPUtilityPrograms.htm A program that might do it.

Here's a general overview which I just enjoyed flipping through.
http://sslcbl01.tamu.edu/frsc652/200...ctions_bw6.pdf

Hope that helps.
There are some online calculators that do it too...but I don't think that will do what you need based on your message.

Thanks for your help.

I just have finished to program the function

I think I will include this to the mapstuff library and send it to the author

in this post you have an example and more references about how to do it in python using a NTv2 grid..

Conversión de ED50 a WGS84 (o ETRS89) » Iker Perez de Albeniz