How do I keep the linking column[s] in a merge()? I need to use the values again in a further merge.
thanks Nevil Amos ______________________________________________ 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.
