On Fri, Jul 1, 2011 at 9:45 PM, Joshua Wiley <jwiley.psych@gmail.com> wrote:

> Hi Peter,
>
> There are lots and lots of ways.  Here are examples of a few that came
> to mind.  If you have never used the ggplot2 package, you will first
> need to install it, which you can do by typing:
>
> [snip]


Incredible!  This gives me so much to work with - thanks very much!

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