title: matplotlib plot bar and line charts together
body: <p>I want to plot bar and line together in one chart. When I plot bars, it displays correctly(g1 and g10 are displayed completed):<a href="https://i.stack.imgur.com/nbkwT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nbkwT.png" alt="enter image description here"></a></p>
  
  <p>However, if I add a line to the plot:</p>
  
  <pre><code>m1_t[['abnormal','fix','normal']].plot(kind='bar')
  m1_t['bad_rate'].plot(secondary_y=True)
  </code></pre>
  
  <p>The bar chart is incomplete as below(g1 and g10 are chopped):
  <a href="https://i.stack.imgur.com/CoHtw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/CoHtw.png" alt="enter image description here"></a></p>
  
  <p>Any idea how to fix this problem?</p>