[R] Trellis plots with two regression lines

[yvo]

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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