title: How to keep indexes when combining matrices?
body: <p>I have 2 indexes, one named NIM, and one named Total Score. Both have 100X1 block matrices.</p>
  <p>When I run the code below the index gets removed.</p>
  <p><code> Final_Score = np.hstack((NIM, np.atleast_2d(total_score).T))</code></p>
  <p>Is there a way to combine several matrices into one and keep their indexes?</p>