[Therion] Geodetic coordinate system support in therion

Martin Budaj m.budaj at gmail.com
Wed Oct 25 16:32:44 CEST 2006


No problem in input data. For output you either choose utm zone manually or
let therion to fix the zone according the zone of the first fixed point
processed.

Martin

On 10/22/06, Duncan Collis <duncan.collis at gmail.com> wrote:
>
> What happens if you fix two points which happen to lie in different UTM
> zones?
> This situation occurs in one of our project areas, which straddles a
> UTM zone boundary.
>
> Duncan
>
> On 10/18/06, Philip Schuchardt <ohc at vt.edu> wrote:
> > Excellent.
> >
> > On Wednesday 18 October 2006 9:40 am, Stacho Mudrak wrote:
> > > In the last developement snapshot, there is integrated PROJ4 library
> that
> > > enables therion to work with geodetic coordinate systems (currently
> UTM
> > and
> > > Lat/Long and czechoslovak JTSK :).
> > >
> > > Usage is simple:
> > >
> > > cs long-lat
> > > fix 0 19:10 40:30 1500
> > >
> > > will fix point 0 at E19deg10min N40deg30min 1500 m a.s.l. The output
> in
> > > this case will be in UTM zone 34 grid (zone automatically calculated).
> > >
> > > If you would like add and use your national coordinate systems, please
> ask
> > > for it.
> > >
> > > If you do not like it, nothing happens and ad-hoc local coordinate
> system
> > > will be used by default as before.
> > >
> > > S.
> > >
> > > P.S. If you will ask for your CS, it would be great if you could send
> us
> > > parametrization string of your coordinate system in PROJ4 library
> format
> > > (see http://proj.maptools.org).
> > >
> > > _______________________________________________
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> > > Therion at speleo.cz
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> >
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