[GRASS-user] Question about units and points of reference

[Hamish]

Wayde Allen wrote:
> > projection: 1 (UTM)
> > zone:       10
> > datum:      nad83
> > ellipsoid:  grs80
> > north:      4269999
> > south:      4180119
> > west:       598614
> > east:       651978
..
> I've very new to all of this, so please forgive what may be a very
> obvious question, but can someone explain the units for these
> coordinates?  I'm thinking that "north: 4269999" must indicate the
> distance North of some reference location, perhaps the equator?  It
> this in feet, meters, miles, kilometers, or something else entirely?


This is the "UTM Zone 10" projection. It is measured in meters.

To add to Glynn's explanation, see
  http://grass.gdf-hannover.de/wiki/Gis_Concepts
  and "g.proj -p"



Hamish