[Proj] Gauss-Schreiber: the continuing story
Clifford J Mugnier
cjmce at lsu.edu
Thu Jun 26 14:55:23 EDT 2008
Some other person, and a different century. The projection was cooked up by Laborde, a French Army Officer that later retired and taught mathematical cartography and geodesy in Paris. When he retired, he was a General officer. Traite des Projections was co-authored by him and Driencourt in 1934 or 1936 in two volumes published in Paris. Long out of print, it was only one edition and in French only.
I have no idea if they were related ... curious coincidence if not.
From: proj-bounces at lists.maptools.org on behalf of support.mn at elisanet.fi
Sent: Thu 26-Jun-08 13:47
To: PROJ.4 and general Projections Discussions; geraldi.evenden at gmail.com
Subject: Re: [Proj] Gauss-Schreiber: the continuing story
Just noticed that:
> Laborde's Madegascar efforts were circa 1929
Wikipedia is telling that Jean Laborde lived (16 October 1805 in Auch -
27 December 1878 in Madagascar).
But is this some other person?
> "The Gauss-Schreider projection was developed about 1880 and used for the
> Prussian land survey. It consists of a double conformal transformation of
> the ellipse onto the sphere and then of the sphere onto the plane using the
> spherical transverse Mercator projection. The central merdian varies in
> And, of course, we have the IGN claim with Laborde in NT/G 73. I am not sure
> what the timing was but because Laborde's Madegascar efforts were circa 1929
> then the best he can probably claim is rediscovering the projection. The
> Madagascar should not be confused with the NT/G 73 and I am only using it as
> a reference to one period where we know he was active as I do not have his
> birth-death dates.
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