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

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frwmetric 2013-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/76055-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.

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Answer 1

Sean de Wolski 2013-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/76055-how-to-get-plus-and-minus-sign-element-of-matrix-at-the-same-time#answer_85715

在 MATLAB Online 中打开

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

?

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frwmetric 2013-5-16

编辑：Azzi Abdelmalek 2013-5-19

在 MATLAB Online 中打开

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...