[GRASS-user] Newbie... Locations, Projections, Regions, choices? (long)

Glynn Clements glynn at gclements.plus.com
Wed Mar 31 15:15:34 EDT 2010

Randy Bradley wrote:

>     The map displays fine but I want to change the projection to Albers
> Equal Area or Lambert Conformal Conical since it is such a large area.  So I
> created a new location: aeaConUS with one caveat.  It said the eastern value
> had to be larger than the western value so I (perhaps wrongly) used ­125 for
> the western boundary and ­67 for the eastern.  Using the GUI selected the
> ³Vector>Develop map>Reproject vector² menu item and selected the vector from
> the above location.  Here is what the new location and default region looks
> like:

> > g.region -p
> projection: 99 (Albers Equal Area)

> north:      49
> south:      25
> west:       -125
> east:       -67

For a projected location, the bounds must be specified in projected
coordinates (metres, feet, etc), not lat/lon degrees.

Glynn Clements <glynn at gclements.plus.com>

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