Effacer les filtres
Effacer les filtres

Reshape by rows instead of columns

55 vues (au cours des 30 derniers jours)
Adam Fitchett
Adam Fitchett le 8 Mar 2022
Commenté : Amr Aboughazala le 29 Août 2022
I have a 1260 by 1 column vector (myVector) that I want to reshape to a 35*36 matrix. However, I can't figure out how to reshape it the particular way that I want:
reshape(myVector,35,36) takes each successive chunk of 35 elements from myVector and makes them the 36 columns of the new matrix. But I want to take each successive chunk of 36 elements from myVector and make each chunk the 35 rows of the new matrix. How do I do this?

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Max Alger-Meyer
Max Alger-Meyer le 8 Mar 2022
If I understand you correctly, all you need to do is transpose the reshaped result:
vector = 1:16
vector = 1×16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
array1 = reshape(vector,4,4)
array1 = 4×4
1 5 9 13 2 6 10 14 3 7 11 15 4 8 12 16
transpose(array1)
ans = 4×4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
  5 commentaires
Bruno Luong
Bruno Luong le 29 Août 2022
@Amr Aboughazala "taking the transpose won't give the first answer"
because you take transpose on a wrong reshape.
The correct one is
x = [0,1,2,3,4,5];
reshape(x,[2,3])' % size is [2,3] not [3,2]
ans = 3×2
0 1 2 3 4 5
It does fine.
Amr Aboughazala
Amr Aboughazala le 29 Août 2022
I just noticed that, thank you so much for your reply :)

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