Hello Ben, 2009/9/26 Benjamin Ducke <[email protected]>: > Great stuff indeed, Soeren!
Thanks a lot. I hope this code will help to do something useful in the future. > >> >> Curiosity: how much faster is this compared to v.delaunay or likewise? > > To me, it's not so much the speed that matters but functionality. > VTK's 2D Delaunay has a very useful "alpha" threshold setting to constrain > the triangle (by maximum triangle size). > In addition, it's capable of fitting a plane of reference through the data > points and does not assume that they lie perfectly in the X-Y plane. > This gives much better results for point clouds that describe e.g. micro > relief > on a slope. > > You can try this already, even without the VTK bridge: just export some > 3D points to VTK, load into ParaView (3.6) and choose Delaunay 2D from > the "Filter" menu. > > Now, if only we had a simple way of getting VTK data back into GRASS... This is work in progress .... there will be of course a vtkGRASSVectorPolyDataWriter() in ... some ... weeks. :) Best regards Soeren > > Ben > > >> >> Markus >> _______________________________________________ >> grass-dev mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-dev >> >> > > > -- > Benjamin Ducke > Senior Applications Support and Development Officer > > Oxford Archaeological Unit Limited > Janus House > Osney Mead > OX2 0ES > Oxford, U.K. > > Tel: +44 (0)1865 263 800 (switchboard) > Tel: +44 (0)1865 980 758 (direct) > Fax :+44 (0)1865 793 496 > [email protected] > > > > > ------ > Files attached to this email may be in ISO 26300 format (OASIS Open Document > Format). If you have difficulty opening them, please visit > http://iso26300.info for more information. > > _______________________________________________ > grass-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-dev > _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
