title: Removing variable names with ggpairs
body: <p>I'm trying to produce a specific plot using ggpairs of the GGally package with code like the following:</p>
  
  <pre><code>data(tips, package="reshape")
  pm &lt;- ggpairs(tips[,1:3], axisLabels="none")
  </code></pre>
  
  <p>My problem is that I can't figure out how to remove the labels "total_bill", "tip", "sex" from the sides of the plot. Is there a way of doing this? </p>