On Fri, Jan 27, 2012 at 9:57 PM, Hamish <[email protected]> wrote: > Moritz ha scritto: >> typemask is not an option for v.centroid, but a grass-plugin >> specific parameter. What does it do ? > Paolo: >> it filters out the type of maps that appears on the list. > > > Martin: >> AFAIU, it's related to `type` parameter. `typemask` filters vector >> maps which contains given type, ie. in this case only vector maps >> which contains at least one area (closed set of boundaries) are shown >> in combo box. > Paolo: >> ok, so the current set of options seem right. > > but v.centroids is important for cases when there are no valid areas. > > e.g. a dxf line map deliniating land parcels converted to boundaries > with v.type.
Areas without a centroid are valid areas. If the dxf lines converted to boundaries do not form closed areas, there are no areas. Martin and Paolo are right. Markus M _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
