How to reshape an M x (aN) matrix into a (aM) x (N) matrix in MATLAB?

Hey everyone,

I want to reshape an M x (aN) matrix into a (aM) x (N) matrix in MATLAB without using nested for loops?

An example transformation is given below if a=3. (Each square is given with a size of M x N)

Answer 1

[Bruno Luong]

Use permute

m = 3;
n = 2;
a = 4;
A = reshape(zeros(m,n)+reshape(1:a,[1 1 a]),[m n*a]);
A

A = 3×8

1 1 2 2 3 3 4 4 1 1 2 2 3 3 4 4 1 1 2 2 3 3 4 4

B = reshape(permute(reshape(A,[m n a]),[1 3 2]),[m*a n])

B = 12×2

1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4

[Mehmet]

Great solution Bruno! Thank you.