[R] Consistent behaviour of for-loop

[Peter Ehlers]

On 2010-04-15 2:10, Uwe Dippel wrote:
> First my excuses if I keep bugging everyone in this list, but I am a
> newbie, and tend to find some behaviour that looks unexpected to me; and
> I would really appreciate to be pointed to some location that allows me
> to understand more about this software. Here is my next question:
>  > 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.

  -Peter Ehlers

>
> As I wrote, I'd really appreciate the understand where this behaviour
> comes from.
>
> Thanks in advance,
>
> Uwe
>
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>

-- 
Peter Ehlers
University of Calgary