Polygons to raster map

[Nalneesh Gaur]

Marlin,

You can use r.mapcalc script

To check if the cell has a value, if it does then do nothing. If it does
not have a value then assign it the neighboring value. You may run the mapcalc
script as many times as you wish to filter out the holes.

You may want to make a back up of your map before you try this.
For example you could do something like this

GRASS-GRID:> r.mapcalc << eof
        map_name=if(<map_name>, <map_name>, map_name[0,1])
        map_name=if(<map_name>, <map_name>, map_name[0,-1])
        map_name=if(<map_name>, <map_name>, map_name[1,0])
        map_name=if(<map_name>, <map_name>, map_name[-1,0])
        map_name=if(<map_name>, <map_name>, map_name[-1,-1])
        map_name=if(<map_name>, <map_name>, map_name[1,1])
        map_name=if(<map_name>, <map_name>, map_name[-1,1])
        map_name=if(<map_name>, <map_name>, map_name[1,-1])
eof
Nalneesh Gaur