title: How do I set ylim for subplots using Pandas dataframe?
body: <p>I have more than thee columns for data frame.
  I can set the bottom graph using ax=plt.gca(), but how do I set the limit for other subplots? </p>
  
  <p>Below is the code I use for the plotting.</p>
  
  <pre><code>SomeDataFrame.plot(subplots=True, style=style, title='%s' % macID.upper(), grid=True, legend=True,)
  ax = plt.gca()
  ax.ylim=([lowlimit, highlimit])
  
  plt.show()
  </code></pre>