Re: making sense of r.reclass.area
Ken Mankoff <[email protected]>
| Newsgroups | gmane.comp.gis.grass.user |
|---|---|
| Message-ID | <[email protected]> |
Hi Markus, On 2017-11-17 at 14:09, Markus Metz <[email protected]> wrote: > OK, I understand now. With method=rmarea, r.reclass converts the > raster clumps to vector areas. That single cell in your example below, > that either belongs to the larger clump 1 (with -d) or forms a > separate clump 2 (without -d) will always be a separate small vector > area (topology or not does not matter here) and thus will always be > removed independent of the 2-cell clump. The vector approach is thus > not working here as expected. Thanks for looking into this and explaining. I'll open a documentation bug on Trac. > Incidentally I have added a minsize option to r.clump in GRASS 7.4 which > should work as expected. Try to use r.clump minsize=X (in number of cells) > instead of r.reclass.area method=rmarea mode=lesser. Between this and mapcalc area() function in 7.3 I need to find a way use more cutting-edge GRASS versions than 7.2.2 even though I'm on OS X. -k. _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user