Le mardi 23 septembre 2008 à 01:17 -0700, Hamish a écrit : > I still look for a nice method to paste together overlapping splines > cleanly.
Maybe first generating /sufficiently/ overlapping tiles, then adjust adjacent ones in the middle of the overlap (ok, not very clean) > IM(V)HO the fact that TINs are used so much to make raster surfaces is > an artifact kludge from a history of other well known GIS which was > historically strong with vector data but weak with raster data Yes, it's hard to ged rid of some old /educational/ reflexes. I agree ! but anyway, TINGRID was very useful. > If speed is a real limiting factor I'd suggest trying v.surf.idw(2), > or perhaps r.surf.nnbathy*. Very useful module if one needs to generate a non-interpolated surface, fitting exactly a given set of points. Could it become a default command in Grass ? > > > > Perhaps could this code be turned into grass module ? well, > > it's beyond my skills, but... > > I could have sworn there was a TIN module on the wiki addons page, but > don't see it now. > > Maybe it was lurking in the R-interface tutorials or somewhere? > (The grass wiki as-setup doesn't search for 3 letter words, which is > a bit of a problem) Maybe you confuse with the TIN how-to ? using Paraview and Meshlab http://grass.osgeo.org/wiki/HOWTO_create_3D_TIN > > > 3c, > Hamish > > > [*] Is there any thoughts on moving r.surf.nnbathy into the main source? > It requires an external dependency to use, but so do many other scripts. > To me it's a valuable addition to the available quiver of interpolation > methods; a nice compromise between IDW and splines. Before doing that I > think to change it to be v.surf.nnbathy (its first step is r.to.vect). > > > > > > _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user