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