I've kind of solved the issue. dat$Time <- paste(dat[,2], dat[,1], sep=" ") head(dat) dat[,c(1,2)] <- NA head(dat)
> head(dat) Year Month Number Time 1 NA NA 0 Jan 2002 2 NA NA 0 Feb 2002 3 NA NA 0 March 2002 4 NA NA 1 April 2002 5 NA NA 0 May 2002 6 NA NA 0 June 2002 unfortunately, can I delete the Year and Month Columns. Once that's done, I can reconfigure the columns Abraham On Thu, Apr 28, 2011 at 11:00 AM, Abraham Mathew <abmathe...@gmail.com>wrote: > > Hi folks, I have a simple question that I just can't solve. > > I'm trying to merge two columns in my data frame. > > > sessionInfo() > R version 2.13.0 (2011-04-13) > Platform: i686-pc-linux-gnu (32-bit) > > > head(dat) > Year Month Number > 2002 Jan 0 > 2002 Feb 0 > 2002 March 0 > 2002 April 1 > 2002 May 0 > 2002 June 0 > > I tried to do the following, but it doesn't work. > > dat$Time <- merge(dat[,1], dat[,2]) > head(dat) > > > Help, Abraham. > > > > > [[alternative HTML version deleted]] ______________________________________________ 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.