[GRASS-user] mosaic with landsat geotiff

[Maciej Sieczka]

Juan Manuel Barreneche pisze:

> [These images come labeled by the orbit
> of the satellite and the "point", which is the number of image of the
> sequence of said orbit, and are in UTM projection (resolution 30m x
> 30m)]

Juan,

Different UTM zones are different coordinate systems. If you want to 
uses data form two different UTM zones you need to reproject them into a 
common coordinate system first. Finding such a system is up to you.

Reprojection can be accomplished with gdalwarp. If you need to do it in 
GRASS there is r.proj.

Maciek