Say I have
library(lattice)
x<-runif(256)
y<-runif(256)
f<-gl(16,16)
g1<-rep(1:4,each=64)
g2<-rep(1:4,times=64)
plot<-xyplot(y~x|f,
groups=g1,
pch=as.character(1:4),
panel=function(x,y,subscripts,groups,...){
panel.superpose(x,y,subscripts,groups,...)
})
print(plot)
Currently, both color and plotting symbol change with the grouping
variable g1. What is the best way to have color change with g1, but
plotting symbol change with g2 (or vice versa)?
Thanks,
Ben
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