[R] an operator for "contains"

[Jonathan Baron]

See match().  Also intersect().

The documentation for operators is, I think mostly at the top of
the index page for the base package, the one you searched.  The
relevant one is %in%.  I guess "Value matching" didn't ring the
right bell.

On 06/17/05 13:31, 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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-- 
Jonathan Baron, Professor of Psychology, University of Pennsylvania
Home page: http://www.sas.upenn.edu/~baron