I have a problem with the merge command. I have to merge two dataframe that looks like the following example:
CODPROD N1 N3 N4 23 3 55 4 24 5 67 36 25 3 73 24 second data frame CODPROD N1 N2 30 34 45 45 0 78 65 0 56 The result should be: CODPROD N1 N2 N3 N4 23 3 NA 55 4 24 5 NA 67 36 25 3 NA 73 24 30 34 45 NA NA 45 0 78 NA NA 65 0 56 NA NA Anyone knows how to do it?? ______________________________________________ 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.
