title: Matlibplot only showing one of the plots on a stacked bar chart
body: <p>I am trying to do a matlibplot stacked bar chart.  I am writing out two different plots, but only one of them shows.  I am not sure why that would be.</p>
  <pre><code>    import pandas as pd
      import numpy as np
      import matplotlib.pyplot as plt
      
      data = {'a':['Usair', 'delta', 'american', 'airlondon', 'United','Peoples 
                   Express','Joes airline and grill'],
              'b':[9052, 9394, 9837, 8911, 10251, 8092, 512],
              'c' :[3002,8000,7600,7933, 8123, 2089,109 ]
             }
      
      df= pd.DataFrame(data)
      
      df.columns = ['airline', 'flights', 'on time']
      df['ontimepct'] = df['on time'] /df['flights']
      df
  
  ind = pd.Series(np.arange(7))
  w = 0.50
  
  
  plt.bar(ind, df['ontimepct'], w, color = 'r', label= 'On Time')
  plt.bar(ind + w, df['flights'], w, color = 'g', label='Flights')
  
  plt.show
  </code></pre>