title: ggplot2 Scatter Plot Labels
body: <p>I'm trying to use ggplot2 to create and label a scatterplot. The variables that I am plotting are both scaled such that the horizontal and the vertical axis are plotted in units of standard deviation (1,2,3,4,...ect from the mean). What I would like to be able to do is label ONLY those elements that are beyond a certain limit of standard deviations from the mean. Ideally, this labeling would be based off of another column of data. </p>
  
  <p>Is there a way to do this? </p>
  
  <p>I've looked through the online manual, but I haven't been able to find anything about defining labels for plotted data. </p>
  
  <p>Help is appreciated! </p>
  
  <p>Thanks!</p>
  
  <p>BEB</p>