[jose_zola]

hey, i am trying to zrite an udf function to change the porosity of a medium with a new idea. For example considering this matrix:
1 1 1 1 1 1
0 0 0 0 0 0
1 1 1 1 1 1
value one correspond to high porosity. therfore the geometrie is gonna be like a solid and a tube passing thru it. (N.B the matrix is much more complex than thit). i want to compare the cell index to the each element index in the matrice. does anybody know how to do it?

thanks for replying