title: matplotlib histogram with line
body: <pre><code>import matplotlib.image as mpimg
  from scipy.spatial import distance
  import matplotlib.patches as mpatches
  import pylab
  import matplotlib.mlab as mlab
  import scipy.stats as ss
  
  fig = plt.figure(num=None, figsize=(9, 7), facecolor='w', edgecolor='k')   
  ax = fig.add_subplot(111)
  plt.hist(h, bins=30, normed=True)    #h is the data
  </code></pre>
  
  <p>right now my plot looks like this: 
  <a href="https://i.stack.imgur.com/gAeGW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gAeGW.png" alt="enter image description here"></a></p>
  
  <p>I want to add a trend line to reflect the histogram. To reflect the peak of each bin.  So tried what fuglede suggested, using seaborn, I got something that is really weird. <a href="https://i.stack.imgur.com/4VXZx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4VXZx.png" alt="enter image description here"></a></p>
  
  <p>I dont know why suddenly with the seaborn imported, my plot has those weird grey grids going on. I'm using Sypder btw. 
  Second, I want to have a smooth like, not like the one I have right now just going up and down. </p>