hello togehter, i have a little problem, maybe you can help me.
I have a data.frame like this one: ID Name 1 Andy 2 John 3 Amy and a data.frame like this: ID Date Value 1 2013-10-01 10 1 2013-10-02 15 2 2013-10-01 7 2 2013-10-03 10 2 2013-10-04 15 3 2013-10-01 10 the result should be this one: ID Name First Second Third 1 Andy 10 15 2 John 7 10 15 3 Amy 10 maybe you can help me, to do this? Thank you. Mat -- View this message in context: http://r.789695.n4.nabble.com/match-values-in-dependence-of-ID-and-Date-tp4678433.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.