[R] an operator for "contains"

[Arne Henningsen]

%in%

R> k <- 1:9
R> 3 %in% k
[1] TRUE
R> 33 %in% k
[1] FALSE

Arne

On Friday 17 June 2005 22:31, Mike R wrote:
> k = c(1:9)
> if( length( which(k==3) ) ){ print("contained") }else{ print("not
> contained") }
>
> is therre a simple way to test if a vector/list contains a particular
> value?
>
> for example an operator, along the lines of: ==
>
> more generally, is the a documentaion page that lists/describes all
> such operators?
>
> lastly, if you didn't know the answer to my question, how would you have
> gone about searching for an answer?  I tried RSiteSearch() using various
> terms, and I opened  R-2.1.0/library/base/html/00Index.html and searched
> for various terms.
>
> TIA
>
> ======================
> platform i686-pc-linux-gnu
> arch     i686
> os       linux-gnu
> system   i686, linux-gnu
> status
> major    2
> minor    1.0
> year     2005
> month    04
> day      18
> language R
>
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-- 
Arne Henningsen
Department of Agricultural Economics
University of Kiel
Olshausenstr. 40
D-24098 Kiel (Germany)
Tel: +49-431-880 4445
Fax: +49-431-880 1397
ahenningsen at agric-econ.uni-kiel.de
http://www.uni-kiel.de/agrarpol/ahenningsen/