How to avoid cell2mat while reshaping cell arrays

Hi,

I have 1 x 2 cell: 55430 x 2350 and 55430 x 2200 elements

Try to avoid using cell2mat, is there any another way to reshape this 1x2 cell to get: 1 x 55430 cell: 1 x 4550 elements (4550 = 2350 + 2200);

Thank you

Answer 1

[Stephen23]

Simple way using concatenation:

C = {rand(55430,2350),rand(55430,2200)}; % fake data
D = num2cell(horzcat(C{:}),2);

But I guess you are trying to avoid some "out of memory" errors, in which case loops might help:

N = numel(C);
R = size(C{1},1);
D = cell(1,R);
for ii = 1:R
    T = cell(1,N);
    for jj = 1:N
        T{jj} = C{jj}(ii,:);
    end
    D{ii} = [T{:}];
end

Giving:

>> size(D)
ans =
       1   55430

>> size(D{1})
ans =
      1   4550

>> size(D{end})
ans =
      1   4550

[wave_buoys]

@ Stephen Cobeldick

Wonderful ! This is what I want! Indeed, I try to avoid cell2mat that is related to "out of memory" errors

Thank you so much!

Answer 2

[KSSV]

C{1} = rand(55430,2350) ; 
C{2} = rand(55430,2200) ; 

C1 = num2cell([C{1}(:,1) C{2}(:,1)],2) ;
C2 = num2cell([C{1}(:,2:end) C{2}(:,2:end)],2) ;

[Stephen23]

wave_buoys's "Answer" moved here:

Hi, thanks for a quick answer,

this could a solution, but I was expecting a better approach via 'for' loop, so that I can apply for 1 x n cell.

Could you?