On Thu, Feb 19, 2009 at 9:33 AM, FAROUX STEPHANIE <[email protected]> wrote: > Hi, > In my raster map sea pixels and missing data have the same null value. I'd > like to separate the two but i don't have a sea/land mask. Missing data are > concentrated in some areas. > How can i do it?
You can use r.clump to enumerate the individual raster areas. Then use r.mapcalc with an if condition to select the areas of interest and save them into a new map. This map can then be used as MASK or whatever. Or use the if condition to change to a new value directly and save the result into a new map. Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
