Gundala Viswanath
2008-Aug-01 08:41 UTC
[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
ONKELINX, Thierry
2008-Aug-01 08:52 UTC
[R] Function to check the presence of an Item in an array
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 9500 Geraardsbergen Belgium tel. + 32 54/436 185 Thierry.Onkelinx op inbo.be www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -----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 ______________________________________________ R-help op r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Dimitris Rizopoulos
2008-Aug-01 08:52 UTC
[R] Function to check the presence of an Item in an array
check ?"%in%", e.g.,
x <- c("foo", "bar", "bar2", "qux")
"foo" %in% x
"GUNDALA" %in% x
I hope it helps.
Best,
Dimitris
---
Dimitris Rizopoulos
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
http://perswww.kuleuven.be/dimitris_rizopoulos/
Quoting Gundala Viswanath <gundalav at gmail.com>:
> 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
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm