title: Draw a step histogram without closing the polygon with the bottom line
body: <p>How can I remove the bottom line that closes the path of a step histogram?</p>
  
  <p><img src="https://i.stack.imgur.com/rEqDl.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/QpuYU.png" alt="enter image description here"></p>
  
  <pre><code>import numpy as np
  import matplotlib.pyplot as plt
  
  mu, sigma = 100, 15
  x = mu + sigma * np.random.randn(10000)
  fig = plt.figure()
  ax = fig.add_subplot(111)
  n, bins, patches = ax.hist(x, 50, normed=1, histtype='step')
  plt.ylim(-.005, plt.ylim()[1])
  plt.show()
  </code></pre>
  
  <p><strong>UPDATE:</strong> reported and now fixed:</p>
  
  <p><a href="https://github.com/matplotlib/matplotlib/pull/2113" rel="nofollow noreferrer">https://github.com/matplotlib/matplotlib/pull/2113</a></p>