How to inverse matrix 128*6 in matlab?
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I want to inverse my matrices 128*6 into 6*128.
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Highphi
le 9 Fév 2022
u = [1, 1; ...
2, 2; ...
3, 3];
uInverse = flip(u)
u = [1, 1; ...
2, 2; ...
3, 3];
u90 = rot90(u)
u_neg90 = rot90(u, 3)
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DGM
le 9 Fév 2022
Modifié(e) : DGM
le 9 Fév 2022
Using an asymmetric input allows some distinctions to be made. If the OP is trying to do linear algebra, transposition is probably what's intended.
u = [1, 4; ...
2, 5; ...
3, 6];
u_90 = rot90(u) % rotate 90
u_neg90 = rot90(u, 3) % rotate -90 (or 270)
u_tpose = u.' % transpose
Note that transposition is a special case of permutation that only applies to 2D arrays. More generally, you can do:
u_tpose = permute(u,[2 1])
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