Dear expeRts,
I would like to colorize the backgrounds of a pairs plot according to the
respective panel number. Here is what I tried (without success):
count <- 0
mypanel <- function(x, y, ...){
count <<- count+1
bg. <- if(count %in% c(1,4,9,12)) "#FDFF65" else NA
points(x, y, cex=0.5, bg=bg)
}
U <- matrix(runif(4*500), ncol=4)
pairs(U, panel=mypanel)
I also tried to set par(bg=bg.) before the call to points(), but that didn't
work either. The only thing I found is that "bg=" can be used to fill certain
plot symbols, but I would like to colorize the background of each panel, not
the drawn circles.
Cheers,
Marius
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