[R] Plotting shaded areas

[R. Michael Weylandt]

Perhaps ?polygon

Michael

On Fri, Mar 9, 2012 at 6:10 AM, aoife <aoife.m.doherty at gmail.com> wrote:
> May I ask, is it possible using plotrix to shade a group of variables
> differentially from the rest of a graph, eg so the output looks similar to
> this, where the nodes of open circles are my nodes of interest:
>
> http://r.789695.n4.nabble.com/file/n4459137/Screen_shot_2012-03-08_at_12.18.34.png
>
> Many thanks
>
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