MATLAB: Create a Matrix from different ccella array.

cellmatrix

I have a cell array "data" 1×3 cell, each cell having different number of elements with 4 columns. for example data= [13252*4 double];[1516*4] double;[1244*4]double.

Now, I need a matrix which has maximum number of columns equal to 12 (sum of single columns) and rows equal to the maximum number of columns of all the cells. and I want to insert Nan when there is not value.

Thank you so much!!!

Best Answer

A{1} = rand(10,4) ; 
A{2} = rand(5,4) ; 
A{3} = rand(6,4) ; 
% Get length of each cell 
L = cellfun(@length,A) ; 
for i = 1:length(L)
  if size(A{i},1) < max(L)
    T = NaN(max(L),4) ; 
    T(1:L(i),:) = A{i} ; 
    A{i} = T ; 
  end  
end
iwant = [A{:}] ;