Hi, joseph wrote (15.2.2008): > Thanks. I have another question: > In the following data frame df, I want to replace all values in col1 > that are higher than 3 with NA. df= data.frame(col1=c(1:5, NA),col2= > c(2,NA,4:7))
My suggestion: x<-df$col1; x[ x>3 ]<-NA; df$col1<-x; rm(x) -Kimmo ______________________________________________ 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.
