[R] Find all numbers in a certain interval

Antje niederlein-rstat at yahoo.de
Wed Dec 17 14:02:00 CET 2008


Thanks a lot for every answer I got!
I could solve my problem!

Greg, your proposal seems to be quite useful for me :-) Thank you.

Ciao,
Antje



Antje schrieb:
> Hi all,
> 
> I'd like to know, if I can solve this with a shorter command:
> 
> a <- rnorm(100)
> which(a > -0.5 & a < 0.5)
> 
> # would give me all indices of numbers greater than -0.5 and smaller 
> than +0.5
> 
> I have something similar with a dataframe and it produces sometimes 
> quite long commands...
> I'd like to have something like:
> 
> which(within.interval(a, -0.5, 0.5))
> 
> Is there anything I could use for this purpose?
> 
> 
> Antje
> 
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