[GRASS-user] Eliminat small patches

[Markus Neteler]

On Mon, Oct 3, 2011 at 6:57 PM, Luisa Peña <luisapena1979 at gmail.com> wrote:
> Greetings
> I have a bitmask raster (ones and nulls) and I want to eliminate patches,
> with values of 1, that have an area smaller than X ha (or X pixels). How can
> I do this in GRASS (without having to convert to vector)

Try
http://grass.osgeo.org/gdp/html_grass64/r.reclass.area.html

Markus