[R] Labeling points with xYplot

From: John Poulsen <jpoulsen_at_zoo.ufl.edu>
Date: Mon, 10 Nov 2008 11:26:17 -0500


Hello R-Users,

I am trying to label points on an xYplot. I can label the points, but then I lose the error bars. I suspect that I should be using panel.xYplot rather than panel.xyplot, but that didn't work either...

Can anybody help me out? Example code is below. First xYplot has error bars, second tries to label the points and the bars disappear.

Thanks,
John

a=c(1:4)
b=rnorm(4,15,5)
blab=b+1

xYplot(Cbind(b, b-1.5, b+1.5)~a,

        ylim=c(0,max(b)+3))

xYplot(Cbind(b, b-1.5, b+1.5)~a, ylim=c(0,max(b)+3),

        panel=function(x,y,...){
          panel.xyplot(x,y,...)
          ltext(x=list(1,2,3,4),
                y=list(13,14,15,16),
                labels=list("A","B","C","D"), pos=2)})

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