Dear Joel, On Fri, Oct 15, 2010 at 1:16 AM, Joel <joda2...@student.uu.se> wrote: > > Hi > > I want to set a variable to either 1 or 0 depending on an value of a > dataframe and then add this as a colum to the dataframe. > > This could be done with a loop but as we are able to do questions on a > complete row or colum without a loop it would be sweet if it could be done. > > for example: > > table: > > Name Age > Joel 24 > agust 17 > maja 40 > and so on... > > And what I want to do is a command that gives me > VoteRight<-1 if table$age>18 else set VoteRight to 0
You're closer than you know: table$VoteRight <- ifelse(table$age > 18, 1, 0) ?ifelse is a vectorized function [ifelse(logical test, value if TRUE, value if FALSE)], and you would not even need to cbind() it into your table. Josh > > Then use cbind or something to add it to the table. > > so i get > Name Age VoteRight > Joel 24 1 > agust 17 0 > maja 40 1 > > And as I said before im guessing this can be done without a loop... > > //Joel > -- > View this message in context: > http://r.789695.n4.nabble.com/Set-value-if-else-tp2996667p2996667.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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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.
