On Mon, Dec 13, 2010 at 1:09 PM, robert denham <rjaden...@gmail.com> wrote:
> in > test <- data.frame(V1=c(1,2,3), V2=c(4,5,6)) > > you are using arguments to the data.frame function in the tag=value format. > From the help: > > ...: these arguments are of either the form value or tag = > value. Component names are created based on the tag (if > present) or the deparsed argument itself. > > in > test <- data.frame(V1<-c(1,2,3), V2<-c(4,5,6)) > you are using the value part, with the values being c(1,2,3) and c(4,5,6). > Someone might explain whats really going on, but I don't think the > assignment > of c(1,2,3) to the variable V1 is done before the data.frame is evaluated. > > > > > > On Mon, Dec 13, 2010 at 12:53 PM, Matt Cooper <mattcst...@gmail.com>wrote: > >> Pure curiosity but does anyone know why '<-' and '=' generate different >> columning headers? >> >> > test <- data.frame(V1=c(1,2,3), V2=c(4,5,6)) >> > test >> V1 V2 >> 1 1 4 >> 2 2 5 >> 3 3 6 >> >> > test <- data.frame(V1<-c(1,2,3), V2<-c(4,5,6)) >> > test >> V1....c.1..2..3. V2....c.4..5..6. >> 1 1 4 >> 2 2 5 >> 3 3 6 >> >> > names(test) >> [1] "V1....c.1..2..3." "V2....c.4..5..6." >> >> [[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. >> > > [[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.
