Hi all, I dont know if match is the right approach here. I´d like to match to data.frames. One big dataframe and one small dataframe. In SQL, what i want to do what only be simple relation.
The first consists of two columns a) some value b) some key that is explained in the other dataframe. What i want to do is create (cbind) both to one dataframe like: df1: a b 1 2 2 3 3 2 4 2 5 1 df2: 1 class1 2 class2 3 class3 to newdf: a b class 1 2 class2 2 3 class3 3 2 class2 ... and so forth I have connected R to several relational databases but I dont think it´s necessary here and that there should be a simpler solution for my problem. Maybe some combination of do.call, mapply, lapply or match can do the job. Unfortunately I am not really familiar with these and still keep tryin. thx in advance for any help. Best regards matt ______________________________________________ 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.
