How to split 128x128 array into 64 ( 2x128 ) ?

Hello

i have a 128x128 array which i need to split it into 64 array of size 2x128

How to do that ?

[Stephen23]

The MATLAB approach, where A is your 128x128 array:

C = mat2cell(A, 2*ones(1,64), 128)

[Muhammad Abdulrazek]

thank you Stephen, this work well

Answer 1

[Voss]

Let x be your original (128x128) array. Here's one way to create 64 arrays of size 2x128, which I will store in a single cell array called y:

[n,m] = size(x);
y = cell(1,n/2);
for i = 1:n/2
    y{i} = x(2*i-[1 0],:);
end

This assumes you want pairs of adjacent rows of x to be a single element of y.

[Muhammad Abdulrazek]

Thank You So Much !

But How to re construct the original array again from this form ?

[Voss]

x_reconstructed = vertcat(y{:});

[Muhammad Abdulrazek]

Thank You Benjamin, i appreciate it.

Answer 2

[Matt J]

Download mat2tiles from

https://www.mathworks.com/matlabcentral/fileexchange/35085-mat2tiles-divide-array-into-equal-sized-sub-arrays

A=rand(128);

Acell=mat2tiles(A,[2,inf])

Acell = 64×1 cell array
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}
    {2×128 double}