[R] spliting strings ...

Moshe Olshansky m_olshansky at yahoo.com
Fri Dec 14 00:30:10 CET 2007


Hi Monica,

Try 

sapply(as.list(str),function(x) unlist(strsplit(x,"
"))[1])

--- Monica Pisica <pisicandru at hotmail.com> wrote:

> 
> Hi everyone,
>  
> I have a vector of strings, each string made up by
> different number of words. I want to get a new
> vector which has only the first word of each string
> in the first vector. I came up with this:
>  
> str <- c('aaa bbb', 'cc', 'd eee aa', 'mmm o n')
> str1 <- rep(1, length(str))
> for (i in 1:length(str)) {
>      str1[i] <- strsplit(str, " ")[[i]][1]
> }
>  str1
> 'aaa'   'cc'   'd'  'mmm'
>  
> Now, is there any way to do this simpler?
>  
> Thanks,
>  
> Monica
>  
>
_________________________________________________________________
> Get the power of Windows + Web with the new Windows
> Live.
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.
>



More information about the R-help mailing list