
neighbor tetrahedrals
Posted:
Sep 29, 2011 1:36 PM


Hi,
Let's say we have a series of tetrahedral
d = [100:1:100]; [x,y,z] = meshgrid(d,d,d); % A cube x = [x(:);0]; y = [y(:);0]; z = [z(:);0]; % [x,y,z] are corners of a cube plus the center. dt = DelaunayTri(x,y,z);
I need for each of the tetrahedral, which are the "neigtbors". And since I have the nodes in dt, I would like to find for each tetrahedral (described in dt) which are the other that share 3 nodes.
If any fast way to do that? I have 1e6 tetrahedral, and the for loops joint with find and intersect commands is slow.
Thnaks

