[GRASS-user] g.region Options Yield Different Values

[Rich Shepard]

On Tue, 24 Nov 2009, Glynn Clements wrote:

> Create the location anyhow and set the region from a map once you've
> imported one.
>
> If for some reason you need suitable bounds before you've imported any
> maps you can use use "m.proj -i ..." to convert lat-lon coordinates to
> projected coordinates (but projecting the corners of a lat-lon
> rectangle may be an underestimate; e.g. for LCC, the southernmost
> point will typically be somewhere in the middle of the southern edge,
> not one of the corners).
>
> For a more accurate estimate, create a lat-lon location, set the
> region, use v.in.region and v.split to create a sampled boundary,
> re-project that to the LCC location with v.proj, and use
> "g.region vect=..." to set the default region from the projected
> boundary.

Glynn,

   Thank you very much for the lesson. I'll make sure that the layers I need
for this current project are correct then start planning the model.

Much appreciated,

Rich