Transposing 3 D matrix using permute - how does permute work?
38 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Ok. So I see how to transpose all the "2D slices" of a 3D matrix on other answers (permute(A, [2 1 3])).
But what does the order vector mean? The 2 means what? The second row, column? Anyone who can explain this, I appreciate it.
Thanks
2 commentaires
Javed mohd
le 7 Mar 2018
Hi, Order vector [1:first dim(row) 2:second dim(col) 3:third dim(Z)] so if you want to transpose rows and columns keeping the same Z, your vector would be [2 1 3]
Réponse acceptée
Walter Roberson
le 24 Jan 2012
It is the dimension number. In [2 1 3] it means that the second dimension of the original should become the first dimension of the new array, and the first dimension of the original should become the second dimension of the new array, and the third dimension of the original should stay where it is.
0 commentaires
Plus de réponses (2)
James Tursa
le 25 Jan 2012
Another way to do 2D slice transposing of an nD Array:
mtimesx(1,A,'t')
You can find mtimesx on the FEX here:
href=""<http://www.mathworks.com/matlabcentral/fileexchange/25977-mtimesx-fast-matrix-multiply-with-multi-dimensional-support</a>>
0 commentaires
Ali
le 24 Jan 2012
2 commentaires
Walter Roberson
le 24 Jan 2012
The third dimension has length 1, and it is left where it is, so the third dimension is 1 afterwards. Trailing 1's from the third dimension onward are not explicitly shown in MATLAB. An array which is 2x2 is also 2x2x1x1x1x1x1 but it would not serve any useful purpose to explicitly display the 250-some-odd trailing subscripts that are all exactly "1".
Andrew Newell
le 24 Jan 2012
Each doc page has an option for feedback at the bottom. If you answer "No" to "Was this topic helpful?", you'll get a web form to fill out.
Voir également
Catégories
En savoir plus sur Matrices and Arrays dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!