title: Plotting using plotyy
body: <p>Currently using this code to plot three sets of data.  y2 and y3 should be on the 800ish y-axis, y1 should be along the 0.25ish axis.  </p>
  
  <pre><code>x=aEn;
  y1=dedxAir;
  y2=dedxGold;
  y3=dedxU;
  [hAx,hLine1,hLine2] = plotyy(x,y1,[x',x'],[y2',y3'])
  </code></pre>
  
  <p>However, this produces the following plot.</p>
  
  <p>Hope the <a href="http://i.stack.imgur.com/kxXnN.jpg" rel="nofollow">link</a> works...There shouldn't be four graphs - only three.  Part of my problem is I don't fully understand the syntax (taken straight from the documentation).   Any assistance would be appreciated.</p>