[Proj] Gauss-Schreiber: the continuing story
support.mn at elisanet.fi
support.mn at elisanet.fi
Thu Jun 26 14:47:55 EDT 2008
Hello,
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).
http://en.wikipedia.org/wiki/Jean_Laborde
But is this some other person?
Regards: Janne
-------------------
> "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
> scale."
>
> 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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