Have a look at the packages reshape and reshape2 They were written with this type of problems in mind.
On Aug 26, 2013, at 1:04 PM, catalin roibu <catalinro...@gmail.com> wrote: > Dear all! > > I have a data frame composed by 13 columns (year, and 12 months). I want to > transform this data base in another like this > year month values > 1901 1 > 1901 2 > 1901 3 > ..... > 1901 12 > 1902 1 > 1902 2 > .... > 1902 12 > > Is there a possibility to succeed that in R? > > Thank you! > > best regards! > CR > > -- > --- > Catalin-Constantin ROIBU > Lecturer PhD, Forestry engineer > Forestry Faculty of Suceava > Str. Universitatii no. 13, Suceava, 720229, Romania > office phone +4 0230 52 29 78, ext. 531 > mobile phone +4 0745 53 18 01 > +4 0766 71 76 58 > FAX: +4 0230 52 16 64 > silvic.usv.ro > > [[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. ______________________________________________ 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.