how to get plus and minus sign element of matrix at the same time?

I have a matrix like n=[x,y,z] I need to consider plus and minus sign of x,y and z "at the same time" because I need unique permutation of mix signs as well s.t. [-x,y,z],[x,-y,-z],etc.

Answer 1

[Sean de Wolski]

[xx yy zz] = meshgrid(-1:1);
[xx(:) yy(:) zz(:)]

?

[frwmetric]

Thank you for answer but... result for your codes

        [-1    -1    -1;
        -1     0    -1;
        -1     1    -1;
         0    -1    -1;
         0     0    -1;
         0     1    -1;
         1    -1    -1;
         1     0    -1;
         1     1    -1;
        -1    -1     0;
        -1     0     0;
        -1     1     0;
         0    -1     0;
         0     0     0;
         0     1     0;
         1    -1     0;
         1     0     0;
         1     1     0;
        -1    -1     1;
        -1     0     1;
        -1     1     1;
         0    -1     1;
         0     0     1;
         0     1     1;
         1    -1     1;
         1     0     1;
         1     1     1]
I thought that I can multiply with its each rows but here zeros are problem... Maybe you meant completely different thing... I am sorry, I am very new user...

[Sean de Wolski]

That was just to demonstrate, if you don't want zeros:

meshgrid([-2 -1 1 2]);

If you have x y and z, this is equivalent to:

meshgrid([-x -y -z x y z]);