Peter Ehlers wrote:
 > par(mfrow=c(1,1))
 > qqnorm(rnorm(20))
 > qqmath(rnorm(20))
 > par(mfrow=c(3,4))
 > for(i in 1:12)qqnorm(rnorm(20))
Until here everything works as expected, and the last line prints 12
samples of qqnorm. However,
 > for(i in 1:12)qqmath(rnorm(20))
is doing nothing at all.

You should always tell us what contributed packages you are using.
Here, the qqmath function is from pkg:lattice.
Now check FAQ 7.22.
Thanks, Peter!
(And to the offline-reply as well!)
The question is not completely answered in FAQ 7.22, though:
> par(mfrow=c(3,4))
> for(i in 1:12)print(qqmath(rnorm(20)))
prints 12 after another; not in (3,4)

Why, and how to print 12 samples on a single sheet?

Uwe

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