Your panel function should have a ... argument: see the help page for
pairs(). Since your example is not 'self-contained' I cannot test this
out ....
On Sun, 4 Jan 2009, herwig wrote:
Hi there,
I am just starting in R and this might be a very basic question.
I applied one on the examples of
pairs()
to my own data. The examples shows scatter plots on one side of the matrix
and the correlation coefficients on the other which works well. I then
modified it slightly because I want different colors in the plots. Now i am
getting the error of unused arguments, because the color arguments are not
used when the corellation coefficient is printed.
I would be very greatful if anyone could help me to get rid of this error.
Here my code:
panel.cor <- function(x, y, digits=2, prefix="", cex.cor)
+ {
+ usr <- par("usr"); on.exit(par(usr))
+ par(usr = c(0, 1, 0, 1))
+ r <- abs(cor(x, y))
+ txt <- format(c(r, 0.123456789), digits=digits)[1]
+ txt <- paste(prefix, txt, sep="")
+ if(missing(cex.cor)) cex.cor <- 0.8/strwidth(txt)
+ text(0.5, 0.5, txt, cex = cex.cor * r)
+ }
pairs(pep[9:18],cex.labels = 0.6, pch = 21, bg = c("red", "blue", "green",
"yellow","brown")[unclass(pep$taxonomic.position)], lower.panel=panel.cor)
thanks,
Herwig
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Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
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