Interpolation in the baricenter of a tetrahedron

Hi,

I have to do post-processing on a 3D domain discretized in tetrahedrons. I have a matrix of the values of plasm density in the nodes of them. I also have the coordinates of the baricenters of all of them but I need to interpolate the values known in the nodes in their baricenters. Is there a simple (or not) way to do it?

Thanks.

Answer 1

[Bruno Luong]

1/4 sum values of 4 nodes