ovv at hetnet.nl
Tue Jul 1 07:24:01 EDT 2008
From: "Gerald I. Evenden" <geraldi.evenden at gmail.com>
Sent: Monday, June 30, 2008 8:15 PM
Subject: [Proj] Help!!
>I have been trying to update libproj4 documentation and also keep the
> carto.bib file reasonably up to date. But sometimes this gets to a bit
> difficult with some sources.
> I writing up proj=ftmerc, one of the 4 constant meridian scale transverse
> Mercator projection procedures I am at a loss to describe this source:
> Unfortunately, it is *all* in Swedish and without a hint of who or what.
> Any hint as to what an appropriate reference entry would be would be
For the functions used in ftmerc, the Swedish Landmäteriet is not the
It would be interesting to know where these functions came from.
My theory: they percolated from Krüger (1912) through - among others - König
& Weise (1951), to Hirvonen (1970).
I copied some of the older references from the Finnish JHS154 publication:
* Hirvonen, R.A., Matemaattinen Geodesia, Teknillisen korkeakoulun
ylioppilas-kunta, Helsinki, 1972
* Hirvonen, R.A. The Use of Subroutines in Geodetic Computations,
* Krüger L: Konforme Abbildung des Erdellipsoids in der Ebene, B. G. Teubner
Verlag Leipzig 1912, pages 11-22
* König, R.; Weise, K. H.: Mathematische Grundlagen der höheren Geodäsie und
Kartographie, Springer Verlag Berlin Göttingen Heidelberg, 1951
Remarkably, most papers describing the Italian Gauss-Boaga system, refer to
Cliff Mugnier says in his Grids & Datums column about Italy that Boaga
recasted (and truncated) the Gauss equations. This can also be inferred from
a short biography of Giovanni Boaga at the IGM site:
IGM: Istituto Geografico Militare
Oscar van Vlijmen
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