Hi Johannes, There is an add on module called r.clump4p available at at http://sil.uc.edu/downloads.html#software
It has an option to clump diagonal cells. It is also parallelized and completes much faster than r.clump. Eric On Jan 13, 2014 5:39 AM, "Johannes Radinger" <[email protected]> wrote: > Dear all, > > I just tried r.clump on a rastarized river with alternating patches of good > and bad habitat (values 1 and 2). However, due to its linear structure, > many > cells of the same habitat patch are often only diagonally connected. So > this > is a case where r.clump does not work (as stated in its manual). > > So, as a suggestion, it'd be nice if also diagonal cells could be > considered by r.clump (e.g. by setting a flag). > > ...or maybe someone of you has another idea to how to get unique values > for each discrete patch (also diagonally connected cells of homogeneous > habitat quality). > > FYI r.clump has been tested on GRASS7. > > best regards, > Johannes > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user >
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