Hello Markus, 2009/9/26 Markus Neteler <[email protected]>: > On Sat, Sep 26, 2009 at 5:01 PM, Soeren Gebbert > <[email protected]> wrote: >> Dear grass devs, >> JFYI, i have updated the vtkGRASSBridge to work only with grass7 and added >> vector support without topology handling. >> >> The vtkGRASSBridge is hosted on code.google.com as svn repository: >> http://code.google.com/p/vtk-grass-bridge/ > > Congratulations! > I have taken liberty to create a WIKI page: > http://grass.osgeo.org/wiki/GRASS_and_VTK
Thanks :) I will maybe add some content about the project there. But first i need to add some content to the google code wiki. ;) And my time is sooo limited ... :( > >> Here a small python example to triangulate vector points from the nc >> demo data set with the VTK delaunay filter class: > > Curiosity: how much faster is this compared to v.delaunay or likewise? The VTK Version is twice as fast, but does not write the data back to grass and therefor do not build a topology in grass. The VTK output is base64 XML written to /tmp. GRASS output: GRASS 7.0.svn (nc_spm_08):~/src/vtkGRASSBridge/vtk-grass-bridge/Examples > time v.delaunay -r input=elev_lid792_rand...@user1 output=test2 --o WARNING: Vector map <test2> already exists and will be overwritten Building topology for vector map <test2>... Registering primitives... 17948 primitives registered 35896 vertices registered Building areas... 100% 11949 areas built 1 isles built Number of nodes: 6000 Number of primitives: 17948 Number of points: 0 Number of lines: 0 Number of boundaries: 17948 Number of centroids: 0 Number of areas: 11949 Number of isles: 1 Number of areas without centroid: 11949 100% Building topology for vector map <test2>... Attaching islands... 100% Attaching centroids... 100% Number of nodes: 17949 Number of primitives: 29897 Number of points: 0 Number of lines: 0 Number of boundaries: 17948 Number of centroids: 11949 Number of areas: 11949 Number of isles: 1 real 0m2.543s user 0m2.100s sys 0m0.392s GRASS 7.0.svn (nc_spm_08):~/src/vtkGRASSBridge/vtk-grass-bridge/Examples > time python VectorDelaunyTriangulation.py 'vector/elev_lid792_randpts' was found in more mapsets (also found in <user1>)Using <elev_lid792_rand...@permanent>Debug: Off Modified Time: 254 Reference Count: 1 Registered Events: (none) Is Open: True: Organisation: NC OneMap CreationDate: Person: hmitaso Title: Rural area (in tile 792), random points from lidar-based DEM FullName: elev_lid792_rand...@permanent Mapset: PERMANENT MapDate: Mon Mar 19 00:37:45 2007 Scale: 1 Comment: Zone: 0 Threshold: 0 Projection: 99 ProjectionName: Lambert Conformal Conic Is 3d: No Total number of coor points: 6000 real 0m1.107s user 0m1.048s sys 0m0.040s Best regards Soeren > > Markus > _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
