Hi I want to combine 2 dataframes (t1 and t2) in order to get a third one (t3). The dataframes are below.
In SQL I would do something like: SELECT t1.f1,t1.f2,t1.f3,t2.f4 FROM t1, t2 WHERE t1.f1=t2.f1 AND t1.f2=t2.f2 How can I do it with R ? Thanks EJ > t1 f1 f2 f3 1 A C E1 2 A D E2 3 B C E3 4 B D E4 > t2 f1 f2 f4 1 A C F1 2 A C F2 3 B C F3 4 B C F4 5 A D F5 6 A D F6 > t3 f1 f2 f3 f4 1 A C E1 F1 2 A C E1 F2 3 B C E3 F3 4 B C E3 F4 5 A D E2 F5 6 A D E2 F6 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
