Huilin Chen <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]:
> I am make plots using the function windrose() from the package
> "circular". I would like to have the north on the top instead of
> having 0 degree on the right side.
> Does anybody know how to change the labels in a windrose plot?
There are probably better ways, but this is the record of my experiments
starting with the help file example:
set.seed(1)
dir <- circular(runif(100, 0, 360), units="degrees")
mag <- rgamma(100, 15)
sample <- data.frame(dir=dir, mag=mag)
par(mfrow=c(2,2))
res <- windrose(sample)
#Rotates the data
sample$dir<-sample$dir+90
res <- windrose(sample)
axis.circular(labels=c("E","N","W","S"))
#Overlayed the letter labels but leaves the degree labels
#Read the help file again and now suppress the axes
res <- windrose(sample,axes=FALSE)
# and correctly(?) position labels
axis.circular(labels=c("E","N","W","S"),tcl.text = -0.1)
--
David Winsemius
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