MATLAB: Vectorization of double for loop

cellcell arraysfor looploopvectorization

I am vectorizing following code,doesnt seem to work. I will appreciate any help !
              aux=1; 
              n = sqrt(max(size(u)));
              cut = n / Nx;
              u = reshape(u, n, n);   
              for i = 0 : Nx-1
                  for j = 0 : Nx-1
                  P{aux}{1} = u(1+ i*cut: (i+1)*cut,1+ j*cut: (j+1)*cut); 
                  aux = aux +1;
                  end
              end

Best Answer

Just preallocating P will speed this up a lot
P = cell(Nx^2,1)
before the loop
Related Question