Discussion Forum

Hi,
i obtain the tet-elements of a mesh by

tets = mesh1.getElem('tet');

which gives me a matrix containing the indices of the four vertices that determine each tet-element in each column.
Now I try to get the coordinates of the vertices by using the index-values with matrix

vertices = mesh1.getVertex;

But some tet have a 0 as index-value, so i guess that Comsol starts counting the vertices from 0. If i don't shift the index +1 Matlab gives me an error because it starts counting arrays from 1.

So am I right with my guess or does 0 mean something else (like 'no vertex' ...which would mean that Comsol also puts triangles in the tet set)?
Best regards