How to get all unique positions in a cell array?

I have a cell which contains [x, y] values for example

c = cell(1, 0);

c{1} = [1, 1];

c{2} = [1, 1];

c{3} = [2, 1];

c{4} = [2, 2];

c{5} = [2, 2];

c{5} = [2, 3];

c =

1×5 cell array

{[1 1]} {[1 1]} {[2 1]} {[2 2]} {[2 3]}

Is there a way to find all the unique values in an array. so the output would be

c =

1×4 cell array

{[1 1]} {[2 1]} {[2 2]} {[2 3]}

I have tried to use the unique function but that didn't work initally and I can't find any resources to help.

Comment if you need any more information, im still relatively new to using matlab

Answer 1

[Voss]

c = num2cell(unique(vertcat(c{:}),'rows'),2);

[Voss]

Since they're all 1x2 vectors, it makes more sense to store them in an nx2 matrix rather than a cell array, in which case you can say:

M = unique(M,'rows');

where M is your nx2 matrix.

[Magnus]

Hello thanks you very much this worked perfectly

[Voss]

You're welcome!