How to remove identical pair of data from a matrix in MATLAB?

I have a Nx2 matrix with identical pairs. Something like this:

b_data = [ 1 2; 3 4; 7 10; 2 1; 10 7; 11 12];

i consider 1 2, 2 1 as identical

I need to make this

b_data = [1 2; 3 4;7 10; 11 12];

Is there any command for doing so?

Answer 1

[Jonas]

use something like

unique(sort([1 2; 2 1; 3 5],2),'rows')

[Rik]

The unique function will already sort the output, unless you specify 'stable'. This has been the case for a long time already.

[Jonas]

yes, but without sorting each row before using unique, the rows 1 2 and 2 1 will appear both

[Rik]

Ah, sorry, I must have read it too quickly. Have an upvote as an apology.

[Jonas]

no problem, i also often read faster than i can think ;)