find missing element between two matrix

I have

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

I want to find missing element between A and B

result should be

res=[3 6; 3 5; 1 4; 2 7; 6 5; 6 7]

I used this

res = A(~all(ismember(A,B),2),:);

But it does not give me [3 6; 1 4]

Answer 1

[Stephen23]

>> A = [1,2;3,6;3,5;1,4;4,6;2,7;1,6;6,5;2,3;6,7;3,4];
>> B = [1,2;1,6;2,3;3,4;4,6];
>> R = setdiff(A,B,'rows')
R =
   1   4
   2   7
   3   5
   3   6
   6   5
   6   7

To get the same order, use the 'stable' option or this:

>> [~,X] = setdiff(A,B,'rows');
>> X = sort(X);
>> R = A(X,:)
R =
   3   6
   3   5
   1   4
   2   7
   6   5
   6   7

[NA]

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

I want to have this result

R = [3 6; 3 5; 1 4; 2 7; 6 5; 6 7];

[2,1] and [1, 2] is the same so I want to remove [1 2] from R

if I use this

R = setdiff(A,B,'rows','stable')
R =  1     2
     3     6
     3     5
     1     4
     4     6
     2     7
     6     5
     6     7
     3     4

[Stephen23]

You could sort the rows first, e.g

>> A = [1,2;3,6;3,5;1,4;4,6;2,7;1,6;6,5;2,3;6,7;3,4];
>> B = [2,1;1,6;2,3;4,3;6,4];
>> [~,X] = setdiff(sort(A,2),sort(B,2),'rows','stable');
>> R = A(X,:);

or for earlier versions:

>> [~,X] = setdiff(sort(A,2),sort(B,2),'rows');
>> X = sort(X);
>> R = A(X,:)
R =
     3     6
     3     5
     1     4
     2     7
     6     5
     6     7

[NA]

thanks