[GRASS5] Rethinking regions (was: Re: Grass GUI)

[Eric G. Miller]

On Fri, Mar 22, 2002 at 07:00:30PM +0000, Glynn Clements wrote:

> All commands which generate raster maps need a region. The region
> determines the number of rows/columns in the output map, and the
> geographic coordinates of each cell.
> 
> For the case where there is a single input map, it would be possible
> to use that map's settings, although that would require explicitly
> generating a new clipped and/or resampled map if you didn't want to
> use the map's settings. And what if there are several input maps? Use
> their union? Or intersection? What about the resolution?

For comparison: Arc/Info GRID uses Maxof/Maxof by default.  That is,
if an analysis region and resolution are unspecified, then it uses
the maximum extents and maximum (really lowest?) resolution of the
inputs.

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