[R] Adding lines to xYplot

[Petr Pikal]

Hi

here is another approach based on Gabor Grothendieck's idea to add 
lines to existing lattice plot.

# based on Gabor Grothendieck's code suggestion
# adds straight lines to panels in lattice plots

addLine<- function(...) {
tcL <- trellis.currentLayout()
for(i in 1:nrow(tcL))
  for(j in 1:ncol(tcL))
    if (tcL[i,j] > 0) {
        trellis.focus("panel", j, i, highlight = FALSE)
        panel.abline(...)
        trellis.unfocus()
        }
}

HTH
Petr



On 27 Jan 2007 at 20:13, Michael Kubovy wrote:

To:             	"r-help at stat.math.ethz.ch list" <r-help at stat.math.ethz.ch>
From:           	Michael Kubovy <kubovy at virginia.edu>
Date sent:      	Sat, 27 Jan 2007 20:13:15 -0500
Subject:        	[R] Adding lines to xYplot

> I am using xYplot to plot data and CIs. How do I add several lines to 
> the figure? _____________________________ Professor Michael Kubovy
> University of Virginia Department of Psychology USPS:     P.O.Box
> 400400    Charlottesville, VA 22904-4400 Parcels:    Room 102       
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Petr Pikal
petr.pikal at precheza.cz