[GRASSLIST:3334] Re: UTM projection parameters for USGS LULC and DEM files

[Eric G. Miller]

On Tue, Mar 12, 2002 at 11:42:17AM +0100, Markus Herrchen wrote:
> Hi,
> 
> does anybody know where one can find the projection parameters
> (ellipsoid, datum)
> for the UTM coordinate system used by USGS in the DEM (7.5 min, SDTS
> format)
> and the LULC (1:250'000, CTG format)
> 
> The data are from
> http://edcftp.cr.usgs.gov/doc/edchome/ndcdb/ndcdb.html,
> but i was unable to find at the USGS sites the projections parameter i
> need for GRASS.

With a small bit of effort, you can read them directly from the SDTS
files via m.sdts.read.  You just have to figure out which file contains
the info (I forget).  Most likely they're in NAD83 (grs80).

-- 
Eric G. Miller <egm2 at jps.net>