Swap shape of cell array full of arrays

Hey,

I have a nxn cell array where each element contains a 1xm array.

How do I turn this into a 1xm cell array where each element contains a nxn array?

So basically from:

{[1 2 3 4 5], [1 2 3 4 5]; [1 2 3 4 5], [1 2 3 4 5]}

to

{[1 1; 1 1], [2 2; 2 2], [3 3; 3 3], [4 4; 4 4], [5 5; 5 5]}

Thanks!

Answer 1

[Stephen23]

C = {[1,2,3,4,5], [1,2,3,4,5]; [1,2,3,4,5], [1,2,3,4,5]}

C = 2×2 cell array
    {[1 2 3 4 5]}    {[1 2 3 4 5]}
    {[1 2 3 4 5]}    {[1 2 3 4 5]}

F = @(a)reshape(a,1,1,[]);
D = reshape(num2cell(cell2mat(cellfun(F,C,'uni',0)),1:2),size(C{1}))

D = 1×5 cell array
    {2×2 double}    {2×2 double}    {2×2 double}    {2×2 double}    {2×2 double}

D{:}

ans = 2×2

1 1 1 1

ans = 2×2

2 2 2 2

ans = 2×2

3 3 3 3

ans = 2×2

4 4 4 4

ans = 2×2

5 5 5 5

[Cedric Kotitschke]

That's elegant, thanks!

Answer 2

[Hassaan]

Approach 1

% Example input: an nxn cell array
n = 2;
m = 4; % changed from 5 to 4 to make it reshapeable to 2x2
inputCellArray = cell(n, n);
for i = 1:n
    for j = 1:n
        inputCellArray{i, j} = 1:m; % changed from [1 2 3 4 5] to 1:4
    end
end

% Reshape the input cell array into a 1xm cell array of 1x(n^2) arrays
reshapedCellArray = reshape(inputCellArray', 1, []);

% Use cellfun to reshape each element in the reshapedCellArray into a 2x2 array
outputCellArray = cellfun(@(x) reshape(x, n, []), reshapedCellArray, 'UniformOutput', false);

% Display the resulting 1xm cell array of nxn arrays
disp(outputCellArray);

    {2×2 double}    {2×2 double}    {2×2 double}    {2×2 double}

% Print the values of each 2x2 array
for i = 1:numel(outputCellArray)
    fprintf('Cell %d:\n', i);
    disp(outputCellArray{i});
end

Cell 1:

     1     3
     2     4

Cell 2:

     1     3
     2     4

Cell 3:

     1     3
     2     4

Cell 4:

     1     3
     2     4

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[Dyuman Joshi]

The output from your code is not correct (compared to the expected output).