MATLAB: Convert cell array to matrix

cell arraysMATLABmatrix manipulation

Hello,

Consider a cell array 300×1.

How can I create a matrix where the first 10 rows of the cell become the first row of the matrix, the 11th-20th rows become the second row, etc.

The resulting matrix should be 30×10.

Thsnk you.

Pavlos

Best Answer

D = reshape(cat(1, C{:}), 10, [])

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MATLAB: I have a cell array of size 1×934 and each cell has 160x160x96 double. I want to make a cell array of 1xn (n i think it is 89664) where each cell has 160×160

Method one: concatenate into one numeric array, then split. This will not work of you do not have enough memory for the complete array. Where C is your cell array:

D = reshape(num2cell(cat(3,C{:}),1:2),1,[])

Method two: split into cell arrays, then concatenate. Does not require one large array to be sored in contiguous memory. Where C is your cell array:

D = cellfun(@(a)num2cell(a,1:2),C,'uni',0);
D = reshape(cat(3,D{:}),1,[]);

Best Answer

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