MATLAB: Generating A(i,j) = [i; j]

matrix generation

Hi, is there a clean way to generate a matrix A(i,j) = [i; j], especially without resorting to loops? Thank you so much!

You want each element of your matrix to be a two element vector?

That is not a matrix, but it does sound like a cell array.

C = num2cell(cumsum(ones(5),2));
C = cellfun(@(x,y) [x;y],C,C.','Un',0)

Cell_array = {1,[],magic(2);'stirng',[],[]}
cellfun('isempty',Cell_array)

Replace your code with:

summ=0;  
for j=1:n
  summ=sum(A,2)
end

so there is no confusion between the variable summ and the function sum.