> x <- c("2000/01/01", "2001/02/01","2000/03/01","2000/04/01","2000/05/01","2000/06/01","2000/07/01","2000/08/01","2000/09/01","2000/10/01") > xd <- as.data.frame(x) > levels(xd$x) <- gsub("/", "-", levels(xd$x)) > fix(xd)
This works fine .but with one more variable say xsd in the data frame i'm getting the following error Error in levels(sa$date1) <- gsub("/", "-", levels(sa$date)) : attempt to set an attribute on NULL -- View this message in context: http://n4.nabble.com/Replace-with-in-date-tp1911391p1934428.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.