title: missing labels in matplotlib - bar chart
body: <p>When I draw horizontal bar chart, I see one legend missing in both x axis and y axis when I set yaxis manually like below.</p>
  
  <pre><code>bar_locations = np.arange(6)
  ax.barh(bar_locations, data ,alpha=.5)
  bar_locations = np.arange(6)
  # data = [55, 22, 40, 56, 109, 180]
  # labels = ['others', u'Belts', u'Apparel &amp; Accessories &gt; Jewelry', u'Jewelry', u'Fragrances', u'Watches']
  ax.barh(bar_locations, data ,alpha=.5)
  ax.set_yticklabels(labels)
  fig.tight_layout()
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/hR7Gg.png" rel="noreferrer"><img src="https://i.stack.imgur.com/hR7Gg.png" alt="enter image description here"></a></p>