MATLAB: Reduce rows of a due to b

Question

Hi everyone, I have 2 matices, A and B

a = [0 1 0
     0 1 1
     1 0 1
     1 1 1];
 b =[1 1 1
     0 1 1];

Is it possible to reduce a using b?

Answer 1

ix = ismember(a,b,'rows');
a(ix,:) % gives you the rows in a which is common to b and ~ix vice versa