title: Insert a pandas DataFrame plot into a matplotlib subplot
body: <p>I have created a plot with 4 subplots and each subplot will show a different type of analyses on some infrasound data. This the code I have used to create the subplots: </p>
  
  <pre><code>gs = gridspec.GridSpec(2, 2, width_ratios=[1,1], height_ratios=[1,1])
  
  ax1 = plt.subplot(gs[0])
  ax2 = plt.subplot(gs[1])
  ax3 = plt.subplot(gs[2])
  ax4 = plt.subplot(gs[3])
  </code></pre>
  
  <p>So far I have been able to input what I have wanted into the subplots, but I want to be able to input a pandas DataFrame plot into ax3 and I can't seem to do it. I have already written the pandas program and was just going to insert it into the larger script so it was shown in the subplot. </p>
  
  <p>This is the line of code that is used to plot the pandas DataFrame plot:</p>
  
  <pre><code>df.plot(subplots=True, sharey=True, ylim=(0,(y_max*1.5)))
  </code></pre>