In addition to the substring and regular expression solutions, if you are certain that everything will be numeric (and integer as in your examples), then you could just convert to numeric, divide by 10, and then drop the decimal (floor or as.integer).
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of LCOG1 > Sent: Tuesday, January 12, 2010 11:37 AM > To: r-help@r-project.org > Subject: [R] Drop last numeral > > > Hello all, > Frustrated and i know you can help > > I need to drop the last numeral of each of my values in my data set. > So for > the following i have tried the ?substring but since i have to specify > the > length, but because my data are of varying lengths it doenst work so > well > > Data<-c("1131", "1132", "1731" ,"1732" ,"1821" ,"1822", "2221" ,"2222", > "2241" ,"2242","414342" ,"414371" ,"414372") > Bldgid<-substring(as.character(Data),1,3) > > returns: > "113" "113" "173" "173" "182" "182" "222" "222" "224" "224" "414" "414" > "414" > > but i want" > > "113", "113", "173" ,"173" ,"182" ,"182", "222" ,"222", "224" > ,"224","41434" > ,"41437" ,"41437") > > The values thats have more than 4 numerals are whats messing things up. > Tried ?formatC as well but couldn't get it to coerce things correctly. > Thanks for the help > > JR > -- > View this message in context: http://n4.nabble.com/Drop-last-numeral- > tp1012347p1012347.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@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. ______________________________________________ R-help@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.
