[R] Trellis plots with two regression lines

[Frede Aakmann Tøgersen]

Try

xyplot(abund ~ bif | experiment, data=graphs, groups=stage,
	 type = c("p", "r"))

See the help page for panel.xyplot().



Best regards

Frede Aakmann Tøgersen
Scientist


UNIVERSITY OF AARHUS
Faculty of Agricultural Sciences
Dept. of Genetics and Biotechnology
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> -----Oprindelig meddelelse-----
> Fra: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] På vegne af yvo
> Sendt: 11. marts 2008 13:18
> Til: r-help at r-project.org
> Emne: [R] Trellis plots with two regression lines
> 
> 
> http://www.nabble.com/file/p15976467/table.pdf table.pdf 
> 
> I want to create 8 trellis (|experiment) scatterplots with 
> regression lines for prey and pred in each plot with 
> different colouring. So far i am creating trellis plots- but 
> the separation in these groups is never possible.
> 
> library(lattice)
> graphs<- read.table("table.txt", header=T)
> attach(graphs)
> names(graphs)
> str(graphs)
> xyplot(abund ~ bif | experiment, data=graphs, groups=stage, 
>         panel=function(x,y){panel.xyplot(x,y, pch=16)
> panel.abline(lm(y~x))})
> 
> Thanks a lot for your help!!
> Yvonne Fabian
> University of Fribourg
> 
> 
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