What is the Fastest manner to match rows of 2 matrices?
I have 2 large matrices (S1, S2) with matching rows I used [~,index_A,index_B] = intersect( S1',S2', 'rows'); But it is very time consuming. Is there a faster way to do this?
John Michell answered .
2025-11-20
No, not unless, possibly, the columns of S1 and S2 are sorted in some way or have some additional structural properties.