title: qplot not showing anything on my plot
body: <p>hello I have been trying to use qplot to plot this data.frame</p>
  
  <pre><code>print(Data)
      partition     axis1     axis2
  V1      Alpha  0.064989 -0.093558
  V2       Beta -0.065058  0.009540
  V3      Delta  0.100572 -0.081021
  V4        Zed -0.152011  0.057507
  V5      Alpha -0.039480 -0.020070
  V6       Beta  0.044027 -0.055642
  V7     Catsup -0.149427  0.038032
  V8        Zed  0.133783 -0.021328
  V9        Zed -0.014662 -0.029677
  V10     Alpha -0.094468  0.002095
  V11      Beta  0.090668 -0.033317
  </code></pre>
  
  <p>I am trying to use this code to plot by the axis and color by group</p>
  
  <pre><code>qplot(x="axis1", y= "axis2", data = taxi, color= "partition)
  </code></pre>
  
  <p>But nothing shows up at all. What am I doing wrong?</p>