[R] test if text is part of vector

[Rainer M Krug]

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On 20/01/12 12:50, Johannes Radinger wrote:
> Hello,
> 
> this is a very simple question: How can I find out if a word is
> part of a list of words
> 
> like: a <- "word1" b <- "word4"
> 
> vector <- c("word1","word2","word3")
> 
> I tried it with match(a,vector) but this gives the position of the
> word.
> 
> I am not sure if and how that can be done with a logical operator
> like if: IF text is part of vector THEN print "is part"
> 
> Probably a very easy thing to do, but I am missing the logical
> operator... and help(if) is not working

check out %in%

help:

?"%in%"

Cheers,

Rainer

> 
> best regards, johannes


- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
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email:      Rainer at krugs.de

Skype:      RMkrug
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