Re: pattern

["Biggerstaff, Brad J. (CDC/NCID/VBI)" <bkb5@cdc.gov>]

Or use the built-in function nchar:

 

>nchar(substituteString(pattern="\\+",replacement="",x=test1,global=T))

[1] 2 3 3

>

 

Brad

Brad Biggerstaff, Ph.D.
(970) 221-6473 ... BBiggerstaff@cdc.gov

 

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From: s-news-owner@lists.biostat.wustl.edu [mailto:s-news-owner@lists.biostat.wustl.edu] On Behalf Of Pravin Jadhav
Sent: Tuesday, May 16, 2006 9:48 AM
To: s-news
Subject: [S] pattern

Hello,

 

I have the following vector

> test1<-c("A+B", "A+C+D", "A+G+B")

I am interested in knowing the number of letters in each character string. The output should be (2, 3, 3).

 

I can do this when there is no "+" sign in between

>test2<-c("AB","ACD","AGB")

>attr(regexpr("[A-Z]+",test2), "match.length")

[1] 2 3 3

 

I am wondering how to obtain similar output for "test1". Any pointers are appreciated.

 

Pravin