Hi Andranik, I'd really recommend reading the manual to g.region. If you're using the GUI, just open the manual tab among all the tabs at the top. Otherwise, it's also available here:
http://ludique.u-bourgogne.fr/grass/grass65/manuals/html65_user/g.region.html What the printout you've posted is the following, I'll comment on it line for line: projection: 0 (x,y) > Apparently you're not working in a projection, your region is in an arbitrary lat/lon location. > zone: 0 > There is no zone assigned because it's not a projection with zones like e.g. UTM > north: 4569989.25 > The northernmost border of your region is at 4569989.25 in whatever unit your projection works with, probably meters. > south: 4357350.75 > This is the southernmost border. > west: 436605.75 > This is the westernmost border. > east: 670334.25 > This is the easternmost border. > nsres: 28.5 > The north-to-south resolution is 28.5 map units, so if you're working e.g. with a raster your cells would be 28.5 m across if your map units are meters. > ewres: 28.5 > The east-to-west resolution is the same as the north-to-west resolution. > rows: 7461 > There's a total of 7461 rows in your region. > cols: 8201 > And 8201 columns. > cells: 61187661 > That makes for a total of 61187661 cells (7461 x 8201 = 61187661). So if you're wanting to split your region into two regions that have the same length north to south and are divided in the middle of your original region, you could e.g. move the eastern border to the west, thus "cutting off" the eastern half of the region: g.region e=553470 and then put the western border there and move the eastern border back to where it was, after you're done working on region 1. g.region w=553470 e=670334.25 Hope that helps! Daniel
_______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
