[R] Question regarding subsetting

Uwe Ligges ligges at statistik.uni-dortmund.de
Fri Jul 22 12:52:21 CEST 2005


Dennis Fisher wrote:

> I run R 2.1.1 in a Linux environment (RedHat 9) although my question  
> is not platform-specific.
> 
> Consider the following:
>  > A <- c("Prefix-aaa", "Prefix-bbb", "Prefix-ccc")
>  > B <- strsplit(A, "-")
>  > B
> [[1]]
> [1] "Prefix" "aaa"
> 
> [[2]]
> [1] "Prefix" "bbb"
> 
> [[3]]
> [1] "Prefix" "ccc"
> 
> How do I extract the elements "aaa", "bbb", "ccc" from B?

For example:

sapply(B, "[", 2)

Uwe Ligges


> Thanks in advance.
> 
> 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]]
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html




More information about the R-help mailing list