Guilin Sun
Ansys Employee

First,using rows/2 can be dangeous in general, as when "rows" is an odd number, it can give you result unexpectd.

Second, you stressed that you are using "internal S matrix". however such matrix does NOT count the periodicity as it has no such information internally. It is only when emepropagate works then the periodicity is counted. Again, the   "internal S matrix" only counts the interface s matrix.


To realize your goal, you can duplicate the structure to have  [1, (2,3)^2, 4] after  [1, (2,3)^1, 4]. Soon the reuse of cells will be available for vote so please check the ix website to vote once it is ready: 

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