say your data frame is called "tmp" tmp$PRODUCTS[tmp$PRODUCTS > 70] <- NA
b On Mar 26, 2007, at 12:31 PM, Sergio Della Franca wrote: > Dear R-Helpers, > > I want to substitute the contents of a variable under some contitions. > > I.e., I have this data set: > > YEAR PRODUCTS > 1 80 > 2 90 > 3 50 > 4 60 > 5 30 > > I want to perform this condition: > if products> 70 then products=NA else products=products. > > I'd like to achive the seguent result: > > YEAR PRODUCTS > 1 NA > 2 NA > 3 50 > 4 60 > 5 30 > How can i develop this? > > > Thank you in advance. > > > Sergio Della Franca > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.
