Renae, On Wed, Apr 15, 2009 at 7:16 AM, Renae Mackas <[email protected]> wrote: > > Hello GRASS users- > > I am trying to mosaic colourcomposites from LANDSAT images. A few weeks ago, > I had luck doing this using r.patch with the -z flag such as below: > > r.patch -z > input=020.020.2000.055_rgb,021.020.2000.014_rgb,021.021.2000.142_rgb,022.020.2000.005_rgb > output=mosaic > > When I try doing this now however, r.patch does not seem to be working. In > the output window, it shows a red cirle with an "X" in it next to the > command, but does not print any error message below. I have tried patching > even just the original rasters (rather than the rgb composites), and continue > to get the same results. > > Since the initial (successful) attempts with r.patch, I have extended the > boundaries of the region I am working with and imported rasters from other > locations. All of the image rasters are currently within the region > boundaries though. Is there any reason why the changes I have made would > have changed how r.patch functions? Any suggestions of how to get it working > again?
r.patch (like almost all rast commands) respect the current region. You need to first set the current region to all raster maps of interest, then run r.patch: g.region rast=020.020.2000.055_rgb,021.020.2000.014_rgb,021.021.2000.142_rgb,022.020.2000.005_rgb -p r.patch ... Hope this helps Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
