title: How can generate n matrix with loop in R
body: <p>I have 5 (old) matrices of dim <code>1000*35</code>. I want to create 1000 new matrices of dim <code>5*35</code> so that the first matrix is created from the first rows of the 5 old matrices. The second matrix is created from the second rows of the 5 old matrices and so on. </p>
  
  <p>How can I do it? Please guide me.</p>