It works for me. Try a more recent version of R. > a <- c("PR", "NC", "A2", "BS") > b <- c(1, 0.5, 0.25, 0.125, 0.0625, 0.03125) > > class(expand.grid(a, b, stringsAsFactors=FALSE)[[1]]) [1] "character" > class(expand.grid(a, b, stringsAsFactors=TRUE)[[1]]) [1] "factor"
> R.version.string [1] "R version 2.9.1 RC (2009-06-19 r48804)" On Thu, Jun 25, 2009 at 7:21 AM, Rainer M Krug<r.m.k...@gmail.com> wrote: > Hi > > I have the feeling, that the argument stringsAsFactors has no impact in the > function expand.grid: > > a <- c("PR", "NC", "A2", "BS") > b <- c(1, 0.5, 0.25, 0.125, 0.0625, 0.03125) > > class(expand.grid(css, fscs, stringsAsFactors=FALSE)[[1]]) > [1] "factor" > class(expand.grid(css, fscs, stringsAsFactors=TRUE)[[1]]) > [1] "factor" > > Also, when I look at the code of expand.grid, stringsAsFactors does not > occur in the code. > > Am I missing something? > >> version > _ > platform i486-pc-linux-gnu > arch i486 > os linux-gnu > system i486, linux-gnu > status > major 2 > minor 9.0 > year 2009 > month 04 > day 17 > svn rev 48333 > language R > version.string R version 2.9.0 (2009-04-17) > > Cheers, > > Rainer > -- > Rainer M. Krug, Centre of Excellence for Invasion Biology, Stellenbosch > University, South Africa > > [[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. > ______________________________________________ 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.