Try this:

panel.cor <- function(x, y, ...)
{
     r <- abs(cor(x, y))
     u <- par('usr')
     names(u) <- c("xleft", "xright", "ybottom", "ytop")
     bgcolor <- ifelse(r > 0.5, 'red', 'blue')
     do.call(rect, c(col = bgcolor, as.list(u)))
     points(x, y)
}

pairs(USJudgeRatings, panel=panel.cor)


On Sat, Jun 13, 2009 at 10:19 PM, Naoki Irye <asurain@cdb.riken.jp> wrote:

> Dear list
>
> Is there any way that I can color the background (not the plotted points)
> of
> each box in "pairs" ?
>
> I'd like to color them according to the correlation coefficiency of
> each data pair.
>
> thanks.
>
>
> N
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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