> 
> Hello!
> 
> I like to know if or how it is possible to define
> a new location with transverse-Mercator coordinate system.
> 
> I would be grateful for your help!
> 
> Merry Christmas to all!
> 
> Rolf Krell
> krell@alpha.agrar.uni-giessen.de
> 

Hi Rolf,

Seems like I had that same problem about two years ago; I understand that
you want to have a mapset in Gauss-Krueger coordinate system. The only
existing GRASS4.0 program that I am aware of that helps you with this is the
m.setproj program (originally derived from mapgen's proj). Among others
it offers the possibility to define 'tmerc' as a projection. After that
you'll have to choose the spheroid, central meridian and standard
parallel of the projection. I never managed to figure these parameters out for
Germany, by the way. This program apparently only is working if
you have mapgen installed (it's not in the Grass4.1 release!). I'm not
sure how things work in 4.1 - there now is a category 99 (Other) when you
specify your mapset for the first time, and I do hope that this Other
category takes its information from the PROJ_INFO file that m.setproj
used to create. Well, at least we can be happy that our American friends have
discovered that there's more in the world than UTM and State Plane... To
tell you the truth, when I'm working with data from the Netherlands
(where we have our own wonderful projection that no one else uses) I
choose category 0 (x,y) and pretend the world is a Cartesian coordinate
grid.

Philip Verhagen
 -- 


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