Works for me: x <- read.csv(url("http://dc170.4shared.com/download/153147281/a5c78386/Testvcomp10.csv?tsid=20091116-075223-c3093ab0")) names(x) x[2:13] <- lapply(x[2:13], factor)
> levels(x$P1L55) [1] "0" "1" > is.factor(x$P1L96) [1] TRUE > sessionInfo() R version 2.10.0 (2009-10-26) i386-apple-darwin9.8.0 locale: [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] lattice_0.17-26 loaded via a namespace (and not attached): [1] grid_2.10.0 tools_2.10.0 On Mon, Nov 16, 2009 at 4:50 AM, A Singh <aditi.si...@bristol.ac.uk> wrote: > Sorry, my file is at: > > > http://www.4shared.com/file/153147281/a5c78386/Testvcomp10.html > > > ---------------------- > A Singh > aditi.si...@bristol.ac.uk > School of Biological Sciences > University of Bristol > > ______________________________________________ > 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.