Petr Pikal wrote: > > Hi > I believe there are better solutions but I would use two steps > > select rows where c==0 (see also FAQ 7.31) > sel<-which(big.data.frame$c==0) > > change NA values in b column based on sel > big.data.frame$b[sel][is.na(big.data.frame$b[sel])]<-"20011-07-28" > > Beware of data types AFAIK R can not accept "20011-07-28" as a date. > > Regards > Petr > >
Thanks, it runs like a charm. Replaced date format just a typo. -- View this message in context: http://r.789695.n4.nabble.com/conditional-data-replace-recode-change-or-whatsoever-tp3714715p3715080.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.
