[R] How to split data for NMDS plots

Trey trey3_79 at hotmail.com
Sun Apr 4 22:28:46 CEST 2010

In essence, here is what I'm after:  When I plot the NMDS ordination, I get a
cloud of points.  To make sense of this cloud I need to differentiate the
cloud into control and infested sites to see if there is any meaningful
separation.  The first 5 plots are "infested", and the second 5 plots are
"control".   So how might I insert code into either the plot or point code
lines to bring about this differentiation?
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