[Proj] Roussilhe Projection

Maciek Sieczka werchowyna at epf.pl
Sun Oct 23 15:44:03 EDT 2005

Gerald, I will be glad to translate the
http://www.geonet.net.pl/gfx/pliki/korekty65.doc. I doubt I make it
today. Next weekend maybe. Is that fine?

Mateusz, as you are a pogrammer could you take care of

Frank, if Gerald makes it to include this correction in liproj, do you
think you could port it to PROJ.4 then?

Gerald wrote:
> I had ventured into the subject of the Polish grid systems about
> a year ago but I was frustrated by *very* little source material in
> English and no "benchmark" values---geographic<->grid conversions---
> that I could rely upon for verification of projection code.

I remember. I also remember I wasn't able to help you much then. I was
an absolute newbie to GIS and projections. Since then I've learned
enough, I hope, to be some helpfull in regard of Polish grids now. I
think we can sort out the "System 65" issue together finally.

> Relating to an earlier reference to the 'stere" projection I suggest
> that it only be tried on applications that are influenced by the US.
> Projection 'sterea' or the "double stereographic" seems to be
> the most commonly employed in non-US applications.  I am still
> not clear on how Roussilhe relates to this problem.  But more on
> that later.

Right, sterea is a very good match when compared to reference Transpol 
1.1. I'd love to compare it to rouss too, if it is going to be ported to 
Frank's PROJ.4. Is it?

Thanks to you all.


W polskim Internecie są setki milionów stron. My przekazujemy Tobie tylko najlepsze z nich!

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