MATLAB: Deleting rows of matrix from the rows of other matrix with different dimension

Question

I want to remove rows of my main matrix from the condition of the rows of other matrix. Lets say I have this data

 A = [1 2 3 4 5 
      2 3 4 5 6
      3 4 5 6 7
      5 6 7 8 9];
 B = [1 2
      3 4];

I want to delete some rows of matrix A so it would be like this

A = [2 3 4 5 6
     5 6 7 8 9];

Can anyone help me with this

Answer 1

The simplest solution is to use ismember with its 'rows' option:

idx = ismember(A(:,1:2),B,'rows');
A(idx,:) = []