title: ggplot2: Changing the layout of the legend
body: <p>Right now, the legend by default looks something like this: </p>
  
  <pre><code>Legend Title
  x-1 
  y-2 
  z-3 
  </code></pre>
  
  <p>But is it possible to make it look something like this? </p>
  
  <pre><code>Legend Title 
  x-1 y-2 z-3
  </code></pre>