[R] about string

[Dimitris Rizopoulos]

try the following:

strg <- "abc"
nchar(strg)
############
strg <- c("f:\\JPCS_signal.txt", "f:\\PC1_signal.txt",
          "f:\\PC2_signal.txt")
strg. <- sapply(strsplit(strg, "\\\\"), "[", 2)
sapply(strsplit(strg., "_"), "[", 1)


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
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: "XinMeng" <xmeng at capitalbio.com>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, June 06, 2006 10:40 AM
Subject: [R] about string


> Hello sir:
> There are 2 questions about string.
> 1 How to calculate the width of a string? e.g string "abc"'s width 
> is 3;
> 2 How can I get the "substring" in such kind of condition:
>  "f:\\JPCS_signal.txt"  "f:\\PC1_signal.txt" "f:\\PC2_signal.txt"
> What I wanna get is "JPCS"  "PC1"  "PC2".How can I achieve them by R 
> cammand?
>
> Thanks a lot!
>
> My best
>
>
>
>
> ------------------------------
> *******************************************
> Xin Meng
> Capitalbio Corporation
> National Engineering Research Center
> for Beijing Biochip Technology
> BioPharma-informatics & Software Dept.
> Research Engineer
> Tel: +86-10-80715888/80726868-6438
> Fax: +86-10-80726790
> Email£ºxmeng at capitalbio.com
> Address:18 Life Science Parkway,
> Changping District, Beijing 102206, China
>
>


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