MATLAB: Change matrix dimensions from 4D to 2 D : matrix manipulation

arraymatrix arraymatrix dimensionmatrix manipulation

Dear Matlab community, I am still trying to manipulate some of my output here by converting 4D matrices to 2D. I am having a hard time using "squeeze" and "reshape". I have this matrix (5by5 by 14680 by 30)[ this is basically 30 sets of 14680 of 5by5 matrices), and I need to extract only all the 1st columns from each 5by5 matrices, to have 14680 of (5*1) arrays/matrices, then transpose the (5*1)' so my final matrix has the following dimensions : Final (14680by5) two dimensions only with each row(:,1:5) has the elements from the extracted (5*1) arrays from the step before. I would really appreciate any help! thank you matlab community! Amine

Best Answer

   Output = squeeze( mat2cell( permute(YourMatrix,[3 1 2 4]), size(YourMatrix,3), size(YourMatrix,1), ones(1,size(YourMatrix,2)), ones(1,size(YourMatrix,4)) ) );
Output will now be a 5 x 30 cell array in which each element is a 14680 x 5 array formed by extracting first columns and making them rows.
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