try this: table$VoteRight <- as.numeric(table$age > 18)
Best, Dimitris On 10/15/2010 10:16 AM, Joel 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 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
-- Dimitris Rizopoulos Assistant Professor Department of Biostatistics Erasmus University Medical Center Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands Tel: +31/(0)10/7043478 Fax: +31/(0)10/7043014 Web: http://www.erasmusmc.nl/biostatistiek/ ______________________________________________ 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.
