title: Numpy transpose usage
body: <p>Can't inderstand why numpy doesn't transpose matrix.</p>
  
  <p>This doesn't work:</p>
  
  <pre><code>w=2
  h=3
  rc= np.array([[0,0,1],[0,h,1],[w,h,1],[w,0,1]])
  
  array([[0, 0, 1],
         [0, 3, 1],
         [2, 3, 1],
         [2, 0, 1]])
  
  rc[0].T
  
  array([0, 0, 1])
  </code></pre>
  
  <p>but this works:</p>
  
  <pre><code>v_x= np.array([[0,1,2,3]])
  v_x.T
  array([[0],
         [1],
         [2],
         [3]])
  </code></pre>