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%% Preserve Legacy Behavior of union % Use the |'legacy'| flag to preserve the behavior of |union| from R2012b % and prior releases in your code. %% % Find the union of |A| and |B| with the current behavior. A = [5 7 1]; B = [3 1 1]; [C1,ia1,ib1] = union(A,B) %% % Find the union of |A| and |B|, and preserve the legacy behavior. A = [5 7 1]; B = [3 1 1]; [C2,ia2,ib2] = union(A,B,'legacy')