[GRASSLIST:2418] Re: v.proj problems

[morten at untamo.net]

On Fri, 30 Jan 2004, Ian Macmillan wrote:

> Quoting morten at untamo.net:
> 
> > 
> > 
> > The values for north and south in the utm location should both be 
> > positive. I tried
> > 
> > north:      8112600
> > south:      3770400
> > 
> > and got Chile nicely in the monitor window.
> > 
> > rgds
> > Morten
> >  
> Hmm, that is interesting, then I guess the problem isn't with v.proj.  It is
> with r.in.gdal.  I imported a bunch of landsat rasters (from university of
> maryland).  The utm region that I gave is the region that shows when I set
> g.region raster=mylandsat.  I have posted the meta file here for the geotiffs i
> imported.

Don't know about that, but in proj (and grass) the utm projection for
the south hemisphere has a built-in false northing of -10,000,000 meters.
So north and south in your location are measured as the distance from the
south pole instead of from the equator.

Morten

> 
> www.uweb.ucsb.edu/~ian_macmillan/p233r084_7x19991226.txt
> 
> The coordinates given are all in latlong, however the projection said utm, hence
> my importing them into a utm location.  did I do something wrong there?
> 
> -ian
>