How to reshape a matrix?

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Priyabrata Das
Priyabrata Das el 2 de Oct. de 2020
Comentada: Ameer Hamza el 3 de Oct. de 2020
Suppose I have a 2D matrix (6,3) as follows
A
1 2 3
4 5 6
7 8 9
10 11 12
13 14 15
16 17 18
Now I want to reshape into one 3D matrix (3,3,2) like as follows:
A_3D(:, :, 1)
1 2 3
4 5 6
7 8 9
A_3D(:, :, 2)
10 11 12
13 14 15
16 17 18
How I can achieve that with an efficient way?
Thank you
  1 comentario
VBBV
VBBV el 2 de Oct. de 2020
% if true
% code
% end
A_3D = reshape(A,3,3,[])

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Ameer Hamza
Ameer Hamza el 2 de Oct. de 2020
Editada: Ameer Hamza el 2 de Oct. de 2020
Combination of reshape and permute
permute(reshape(A, 3, size(A,1)/3, []), [1 3 2])
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Priyabrata Das
Priyabrata Das el 3 de Oct. de 2020
It is working fine. Now I have to understand the logic behind this line of code. Thank you very much.
Ameer Hamza
Ameer Hamza el 3 de Oct. de 2020
I am glad to be of help. You can run each part one by one and see the output. That will help in understanding.

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