MATLAB: Put each column of a matrix into different cells

cellmat2cellMATLAB

I have a matrix of size (4×4)

a = [1 2 3 4; 123 4 5 6; 52 5 4 7; 2 5 8 7];
b = mat2cell(a, ?)

I want b to be a {4×1} or {1×4} cell where every cell contains the column values of matrix

b = cell{1,:} = [1; 123; 52; 2] , cell{2,:} = [2 ; 4 ; 5 ; 5] and so on. but i am not being able to figure out mat2cell input parameters

Use num2cell. it is easy

a = [1 2 3 4; 123 4 5 6; 52 5 4 7; 2 5 8 7];
b = num2cell(a,1)

b =

1×4 cell array

{4×1 double} {4×1 double} {4×1 double} {4×1 double}

is usefulll for other purpose

b = mat2cell(a.',[1 1 1 1])

b =

1×4 cell array

{4×1 double} {4×1 double} {4×1 double} {4×1 double}

Hi,

try

cell2mat(your_cell_variable)

So a small example would be

a{1,1} = rand(4,10);
a{1,2} = [];
a{2,1} = [];
a{2,2} = rand(4,100)
b = cell2mat(a);
dim = size(b)

which leads to

a = 
      [4x10 double]                []
                 []    [4x100 double]
dim =
       4   110

Read about cellfun(). Try something like this

img = rand(256);
C1 = mat2cell(img, 16*ones(16,1), 16*ones(16,1));
C2 = cellfun(@(x) mat2cell(x, 4*ones(4,1), 4*ones(4,1)), C1, 'UniformOutput', 0);