I knew there HAD to be a basic function, but 'help.search("split string")'
and 'help("string") did not find it. Thanks for the help on this elementary
question.
Mark
------------------------------------------------------------
Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry
Indiana University School of Medicine
15032 Hunter Court, Westfield, IN 46074
(317) 490-5129 Work, & Mobile & VoiceMail
(317) 399-1219 Home
Skype: mkimpel
******************************************************************
On Wed, Sep 24, 2008 at 12:17 PM, Erik Iverson <[EMAIL PROTECTED]>wrote:
> ?strsplit
>
> Mark Kimpel wrote:
>
>> I have a very long list of strings. Each string actually contains multiple
>> values separated by a semi-colon. I need to turn each string into a vector
>> of the values delimited by the semi-colons. I know I can do this very
>> laboriously by using loops, nchar, and substr, but it is terribly slow. Is
>> there a basic R function that handles this situation? If not, is there
>> perhaps a faster way to do it than I currently am, which is to lapply the
>> following function? Thanks, Mark
>>
>>
>> #######################################################################################
>> string.tokenizer.func<-function(string, separator){
>> new.vec<- NULL
>> newString<- ""
>> if(is.null(string)) {new.vec<-""} else {
>> for(i in 1:(nchar(string) + 1)){
>> if(substr(string, i, i) == separator){
>> new.vec<-c(new.vec,newString)
>> newString <- ""
>> } else {
>> newString<-paste(newString, substr(string, i, i), sep="")
>> }
>> }
>> new.vec<-c(new.vec,newString)
>> }
>> new.vec
>> }
>> ------------------------------------------------------------
>> Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry
>> Indiana University School of Medicine
>>
>> 15032 Hunter Court, Westfield, IN 46074
>>
>> (317) 490-5129 Work, & Mobile & VoiceMail
>> (317) 399-1219 Home
>> Skype: mkimpel
>>
>> ******************************************************************
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
>
>
[[alternative HTML version deleted]]
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
