for loop 2x2 matrix, do not overwrite each iteration

for i=1:5

a=[i i+1;i i-1]

end

I'm wanting to save each iteration of a so that I would end up with a 10x2 matrix in the above example.

Thanks

[John D'Errico]

Why not create a 3-d matrix? So now each matrix is just one plane of a 3-d array, of size 2x2x5? Or store each 2x2 array as one cell of a cell array of length 5?

Answer 1

[Voss]

Depends on what you want the 10x2 matrix to be, but maybe this:

a = zeros(10,2);
for i = 1:5
    a(2*i-[1 0],:) = [i i+1;i i-1];
end

disp(a)

     1     2
     1     0
     2     3
     2     1
     3     4
     3     2
     4     5
     4     3
     5     6
     5     4