Re: [R] Labeling points with xYplot

From: Frank E Harrell Jr <>
Date: Mon, 10 Nov 2008 13:49:49 -0600

John Poulsen wrote:
> 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)})

One of the purposes of xYplot is to use panel.xYplot Frank

Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University

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Received on Mon 10 Nov 2008 - 20:22:56 GMT

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