[GRASSLIST:2467] native resolution of raster maps

[Jason Horn]

Is there a way to find out the native resolution of a raster map and 
_set_it_ using g.region?

I'm concerned about making sure that raster operations (such as 
r.patch) occur at the native resolution of the maps involved, not the 
resolution of the region.  The reason that this concerns me is that I 
noticed that the grid resolution setting of g.region only goes down to 
1 sec (in a lat-lon location).  If I calculate correctly, that's about 
30m.  What if I have data that have, say, a 10m resolution?  Can I not 
perform operations on those data at their native resolution because 
g.region won't let me set the resolution low enough?  For maps that 
have a resolution higher than 30m, how do I set the resolution in 
g.region to exactly match the native resolution of the map.  Right now, 
I'm guessing and I'm afraid that I'm loosing data.

As always, thanks ahead of time,

Jason
Jason Horn
Boston University Department of Biology
5 Cumington Street  Boston, MA 02891

jhorn at bu.edu
617 353 6975