Matrix reduction from large matrix data.

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Nedz
Nedz le 16 Oct 2020
Commenté : KSSV le 16 Oct 2020
I have an input training data of dimension 10,451 by 41.
How can i form a 3 by 3 matrix from each of the row (1 by 41)???
  2 commentaires
Durganshu
Durganshu le 16 Oct 2020
Please elaborate on what is the basis of your matrix reduction. Are you trying to implement something like PCA?
KSSV
KSSV le 16 Oct 2020
As you have 41 elements in a row.....it is tough to divide them into 3*3 matrices as you will be left with some elements left or append extra zeros/ nans to the array.
A = rand(1,41) ;
B = reshape(A(1:36),3,3,[]) ; % 36 because it is divisble by 9
Anew = [A NaN(1,4)] ;
Bnew = reshape(A,3,3,[]) ; % append nans to make A of length 45

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