Exclude elements from array [duplicate]

Answer 1

I would use Afilt=A(~ismember(A,B));. This will return all elements of A which are not in B.

Answer 2

You can compare values with bsxfun:

A = A(all(bsxfun(@ne, A(:), B(:).'), 2))

This approach is especially good if you need to handle floating-point numbers (whereismember fails):

A(all(abs(bsxfun(@minus, A(:), B(:).')) >= eps, 2))

Instead of eps, you can set any tolerance threshold you want.

Answer 3

EDIT: If you want to remove row 4 and 5 it is this, if you want to remove the rows with fours and fives check the other answers.

Simple as this

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

A(B)=[];