title: matplotlib show single graph out of object of subplots
body: <p>I have 18 data sets, and I've done showing all of 18 graphs using <code>plt.subplots</code> as below.</p>
  
  <pre><code>import matplotlib.pyplot as plt
  
  f,ax_array=plt.subplots(6,3)
  for i in range(0,6):
      for j in range(0,3):
          ax_array[i][j].plot(modified_data[3*i+j])
  plt.show()
  #modified data is my data set
  </code></pre>
  
  <p>What I want to do is show a single graph.  For example, how can I show a graph corresponding to <code>ax_array[3][2]</code>?</p>