On Mon, Jan 5, 2015 at 12:17 PM, Benjamin Ducke <[email protected]> wrote: >> >> On Sun, Jan 4, 2015 at 9:02 PM, Markus Metz >> <[email protected] <mailto:[email protected]>> >> wrote: >> >> >> Done in trunk r63952 as v.cluster. It is not a GRASS7 addon because it >> does not work with G7.0. At the moment it only identifies and labels >> clusters. Connectivity graphs and cluster shapes are not implemented. >> In future, I would like to add OPTICS because OPTICS can better handle >> different clusters with different densities. >> > > Thanks Markus, this is excellent progress. > It seems to me that the approximation of cluster shapes from grouped > points is a generic problem that would best be solved with a separate > module. As long as the shapes are roughly convex, the existing v.hull > should work fine. For concave shapes, AFAIK things become messy because > common methods such as alpha shapes require the user to provide > threshold values.
This is true, but v.concave.hull [0] could help ;-) Markus M [0] https://trac.osgeo.org/grass/browser/grass-addons/grass7/vector/v.concave.hull _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
