title: matplotlib: Aligning y-axis labels in stacked scatter plots
body: <p>In the plot bellow i have two scatter plots which have different number scale, so their Y-axis labels are not aligned.  Is there any way I can force the horizontal alignment in the y-axis labels?</p>
  
  <pre><code>import matplotlib.pylab as plt
  import random
  import matplotlib.gridspec as gridspec
  
  random.seed(20)
  data1 = [random.random() for i in range(10)]
  data2 = [random.random()*1000 for i in range(10)]
  
  gs = gridspec.GridSpec(2,1)
  fig = plt.figure()
  
  ax = fig.add_subplot(gs[0])
  ax.plot(data1)
  ax.set_ylabel(r'Label One', size =16)
  
  ax = fig.add_subplot(gs[1])
  ax.plot(data2)
  ax.set_ylabel(r'Label Two', size =16)
  
  plt.show()
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/AB5iU.png" alt="stacked scatter plots"></p>