wolffd@0: function U = unroll_set(S, ss, T)
wolffd@0: % UNROLL_SET Make T shifted copies of the set of nodes S in a slice of size ss.
wolffd@0: % U = unroll_set(S, ss, T)
wolffd@0: 
wolffd@0: offset = repmat(0:ss:(T-1)*ss, [length(S) 1]);
wolffd@0: U = repmat(S(:), [1 T]) + offset;
wolffd@0: