title: Plotting Pandas Multiindex Bar Chart
body: <p>How can I plot a Python Pandas multiindex dataframe as a bar chart with group labels? Do any of the plotting libraries directly support this? This <a href="https://stackoverflow.com/questions/19184484/how-to-add-group-labels-for-bar-charts-in-matplotlib?answertab=active#tab-top">SO post</a> shows a custom solution using matplotlib, but is there direct support for it?</p>
  
  <p>As an example:</p>
  
  <pre><code>quarter  company
  Q1       Blue       100
           Green      300
  Q2       Blue       200
           Green      350
  Q3       Blue       300
           Green      400
  Q4       Blue       400
           Green      450
  Name: count, dtype: int64
  </code></pre>
  
  <p>...can this dataframe be plotted with group labels <a href="https://i.stack.imgur.com/R5PJg.png" rel="noreferrer">like this</a>?</p>
  
  <p>Thanks in advance,</p>
  
  <p>Rafi</p>