[R] Function to check the presence of an Item in an array

[ONKELINX, Thierry]

Look at %in% or match

"foo" %in% x

HTH,

Thierry
------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
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Belgium 
tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be 
www.inbo.be 

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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org]
Namens Gundala Viswanath
Verzonden: vrijdag 1 augustus 2008 10:41
Aan: r-help op stat.math.ethz.ch
Onderwerp: [R] Function to check the presence of an Item in an array

Hi all,

Is there a way to do it?
For example:

> x
"foo" "bar" "bar2" "qux"

is there a function to return TRUE/FALSE
given a test variable

> func("foo")
TRUE

> func("GUNDALA")
FALSE

Is there such "func" in R?

- Gundala Viswanath
Jakarta - Indonesia

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