Hello Markus The material ids can be collapsed into one value. So, the raw geometry can be represented as: x y z material. Then, a completely random example -- for a 3x2x2 -- would look like:
0 0 0 1 1 0 0 1 2 0 0 1 3 0 0 2 0 1 0 2 1 1 0 2 2 1 0 2 3 1 0 3 0 2 0 3 1 2 0 3 2 2 0 1 3 2 0 2 0 0 1 2 1 0 1 1 2 0 1 1 3 0 1 3 0 1 1 3 1 1 1 4 2 1 1 4 3 1 1 4 0 2 1 4 1 2 1 1 2 2 1 3 3 2 1 3 0 0 2 2 1 0 2 2 2 0 2 4 3 0 2 4 0 1 2 1 1 1 2 1 2 1 2 1 3 1 2 2 0 2 2 2 1 2 2 2 2 2 2 2 3 2 2 3 When I generate an STL file from the actual data (not the one above), it seems like the coordinate system's changed. So, although I get a nice mesh using the STL file as input to a mesh generator, it's unusable without a lot of mathematical gymnastics. Many thanks, Ted On 28 November 2010 06:59, Markus Bürg <[email protected]> wrote: > Hello Ted, > > unfortunately I do not know a proper way but using an external mesh > generator for creating such big grids. Anyway, could you explain the link > between grid orientation and materials a bit more? Perhabs we can find a > workaround for that. > > Best Regards, > Markus > > > > Am 27.11.10 22:47, schrieb Ted Kord: > > Hi > > I have a geometry represented as a list of coordinates and material ids > like so: (x y z material1 material2 material3). The max. dimensions are: > 500x370x450 for a total of 83 250 000 points. I'll probably have to read in > a reduced/coarse version and then refine as required. > > I'd like to explicitly read this into a triangulation. Is there a way to > do this? > > I've tried mesh generation but, a) the input file is large, about 3 GB > and b) the coordinates and the geometry's orientation become transformed, > and consequently destroy the mapping between coordinates and materials. > > Many thanks, > > Ted > > > > > _______________________________________________ > dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii > > > _______________________________________________ > dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii > >
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