I am trying to use xyplot to give a six panel plot and to highlight only points (in any panel) that meet a certain criterion. With the plot command I would do something like:
plot.default(filein$Site,filein$circ.conc)
points(filein$Site,filein$circ.conc,type="p",
pch=ifelse(filein$p.value<5e-02,19,21))
I had thought I could just stick in the pch line from above into either xyplot or xYplot with groups set to Site like:
xyplot(circ.conc~Day|Site,data=allsites.byday,groups=Site, pch=ifelse(allsites.byday$p.value<5e-02,19,21))
This does not produce any highlighting (all symbols come out as open circles (19)). I have not messed with writing my own panel functions, though I know that is where the solution must lie. Hopefully someone has an example that is close enough to help me. I can send an example plot to anyone that wants one.
Thanks,
-Pat
Dr. Patrick D. Lorch
[EMAIL PROTECTED]
http://www.unc.edu/~plorch/lorch.html
Department of Biology W: 919-843-2320
University of North Carolina F: 919-962-1625
at Chapel Hill
CB#3280, Coker Hall
Chapel Hill, NC 27599-3280
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