title: Add cylinder to plot
body: <p>I would like to add a transparent cylinder to my 3D scatter plot. How can I do it? </p>
  
  <p>This is the code I am using to make the plot:</p>
  
  <pre><code>fig = plt.figure(2, figsize=(8, 6))
  ax = fig.add_subplot(111, projection='3d')
  
  ax.scatter(X, Y, Z, c=Z,cmap=plt.cm.Paired)
  ax.set_xlabel("X")
  ax.set_ylabel("Y")
  ax.set_zlabel("Z")
  plt.xticks()
  </code></pre>