How to find a difference between two cell arrays containing vectors?

I have two cell arrays of unequal size containing vectors:

A={[1 1], [1 2], [1 3], [1 4]}

and

B={[1 1], [1 7], [1 3], [1 8], [1,5], [1,6]}

I want to substract A from B resulting in cell array C which will contain vectors which are NOT in both A and B. In this case wanted result would look like:

C={[1 2], [1 4], [1 5], [1 6], [1 7]}

Also, it would be good if vectors in C would be oredered in ascending order (as presented in this example).

I have tried using setdiff function but was getting error message: "Input A of class cell and input B of class cell must be cell arrays of strings, unless one is a string."

Any ideas on how to solve this?

Many thanks

[Jan]

"contain vectors which are NOT in both A and B": Why is [1,8] not member of C?

[Aleksandar Milakovic]

I have accidentaly not included [1 8] in the resulting vector, my mistake.

Answer 1

[Star Strider]

This seems to work:

A={[1 1], [1 2], [1 3], [1 4]};
B={[1 1], [1 7], [1 3], [1 8], [1,5], [1,6]};
Ad = cell2mat(A');
Bd = cell2mat(B');
C{:} = setdiff(union(Bd, Ad, 'rows'), intersect(Bd,Ad,'rows'), 'rows');

The ‘C{:}’ assignment creates a cell array out of the final operation. (Note that your description of ‘C’ omitted the vector [1 8], that appears to meet the criteria.)

[Aleksandar Milakovic]

Thank you very much! It was my mistake not to include [1 8] in the reculting vector!

[Star Strider]

My pleasure!

Answer 2

[Jan]

A = {[1 1], [1 2], [1 3], [1 4]};
B = {[1 1], [1 7], [1 3], [1 8], [1,5], [1,6]};
Ad = cat(1, A{:});
Bd = cat(1, B{:});
C  = setxor(Ad, Bd, 'rows')

But here [1,8] is member of C. Is this wanted? If not, please explain exactly which elements should be included in the result.

[Aleksandar Milakovic]

Thank you!