check this:
TEXT <- c("a", "bb;ccc", "dddd;eeeee;ffffff")
SPLIT <- strsplit(TEXT, ";")
sapply(SPLIT, "[", 1)
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://www.student.kuleuven.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Dennis Fisher" <[EMAIL PROTECTED]>
To: <r-help@r-project.org>
Sent: Friday, April 11, 2008 1:12 PM
Subject: [R] strsplit and sapply
> Colleagues,
>
> I have some text:
> TEXT <- c("a", "bb;ccc", "dddd;eeeee;ffffff")
>
> I want to retrieve the portion of each element before the first
> semicolon. I can split each element using strsplit:
>
> SPLIT <- strsplit(TEXT, ";")
>
> This yields:
> > SPLIT
> [[1]]
> [1] "a"
>
> [[2]]
> [1] "bb" "ccc"
>
> [[3]]
> [1] "dddd" "eeeee" "ffffff"
>
> Now I need to access the [1] portions of [[n]] - ("a", "bb",
> "dddd"). I suspect that sapply is the correct tool here but the
> syntax eludes me. Can anyone direct me to the correct syntax?
>
> Dennis
>
>
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-415-564-2220
> www.PLessThan.com
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
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