On Thu, Jan 28, 2010 at 8:04 PM, Martin Huber <[email protected]> wrote: > I'm currently working on including meshes, consisting only of 3-node > triangles, from gmsh into a BEM-code. So I have some questions on the > msh-file that I couldn't find in the manual: > - In the element section there are not only 3-node triangles, but also > some nodes and some edges (but as far as I noticed not all of them). Are > these special nodes/edges and why are they in the elements section?
They're not necessarily special, just artifacts from how the geometry was defined: `elementary geometric entities'. You can suppress them and just output the three-node triangular elements by defining the surface they lie on as a `Physical Surface' <http://geuz.org/gmsh/doc/texinfo/gmsh.html#Surfaces>; for the distinction between `elementary' and `physical' entities in Gmsh, see * http://geuz.org/gmsh/doc/texinfo/gmsh.html#Geometry-module * http://geuz.org/gmsh/doc/texinfo/gmsh.html#Elementary-vs-physical-entities > - Is it possible to get information about neighbourhood of the > triangles, e.g. an additional array that tells, which triangle is beside > the edge number i of the current triangle? This is harder. I don't know how to do it in Gmsh, or whether it's possible. _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
