I don't think so. The OP wanted the list by columns, not rows, if I understand correctly.
unlist(df) provides this. Of course, the request probably does not makes sense in the first place, as the different types/classes in the data.frame will be coerced to one type/class. Moreover, factors will become numeric (is this what motivated the original request??): > dat <- data.frame(a = 1:3, b=letters[1:3]) > dat a b 1 1 a 2 2 b 3 3 c > unlist(dat) a1 a2 a3 b1 b2 b3 1 2 3 1 2 3 So, a guess would be that the OP wants: > unlist(lapply(dat,as.character)) a1 a2 a3 b1 b2 b3 "1" "2" "3" "a" "b" "c" But without the requested reproducible example, this is only a guess. Again, note the coercion of numerics to character. I would also guess that the OP might benefit by reading the Intro to R tutorial and the data frame section of the R Language Definition Manual -- and perhaps ?data.frame -- to better understand the nature of data frames and what can and cannot be done with them. Of course, I may have missed the mark altogether, in which case, please ignore. -- Bert On Tue, Oct 23, 2012 at 6:48 AM, Rui Barradas <ruipbarra...@sapo.pt> wrote: > Hello, > > Use apply/paste. > > apply(df, 1, paste, collapse = "") # outputs a vector > > Also, df is the name of an R function, you should choose something else, it > can become confusing. > > Hope this helps, > > Rui Barradas > Em 23-10-2012 12:45, brunosm escreveu: >> >> Hi, >> >> I have a data frame with 100 variables (numeric and non numeric types), >> and >> I want to join them in only one column, like a vector, but i want to keep >> the non numeric variables like they are. >> >> I know that i can do something like this: >> >> Suppose that my data is in df variable >> >> new_df<-data.frame(c(df[,1],df[,2],df[,3],df[,4],...........) >> >> This works but i have 100 variables! >> >> Any way of doing this a little bit faster? >> >> Thanks a lot! >> >> >> >> >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/Join-data-frame-columns-tp4647113.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. > > > ______________________________________________ > 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. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.
