njhuang86 wrote:
Hi all,
Does anyone know how to plot overlapping qqnorm plots on the same
window?
Suppose I have data in the vector x and y:
qqnorm(x)
lines(qqnorm(y))
I though these two lines will do the job... However, lines doesn't
seem to
work. Anyways, thanks in advance!
E.g.:
set.seed(42)
x <- rnorm(100)
y <- runif(120)
qqnorm(x)
points(qqnorm(y,plot=FALSE),col="red")
If you ***really*** (???) want a line graph, then do
qqnorm(sort(x),type="l")
lines(qqnorm(sort(y),plot=FALSE),col="red")
cheers,
Rolf Turner
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