Insert "1" at specific ranges in a matrix

Hello,

I am trying to generate a 40 x 360 matrix that has 1's every 9 columns. After the 9th column, the 1's should now be in the second row and from columns 10-18. After the 18th column, the 1's will now be in the 3rd row and from columns 19-27 and so on...

The matrix will look like this:

1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 ...
0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 ...
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 ...
...
Is there an easy way to generate this matrix?

This is what I have so far :-(

aa = zeros(40,360);
bb = ones(1,9);

Thanks for your help!

Answer 1

[Image Analyst]

Here's a way that you may consider "simple":

aa = zeros(40,360);
for row = 1 : size(aa, 1)
  col = 9*(row-1)+1;
  aa(row, col:col+8) = 1;
end

Answer 2

[Andrei Bobrov]

z =repmat({ones(1,9)},40,1);
out = blkdiag(z{:});

or

out = kron(eye(40),ones(1,9));