>> dat1[order(val), ] # Gives Error in order(val) : object 'val' not found >> >> dat1[order(dat1[,2]), ] # Works just fine. > > dat1[order(dat1$val), ] > > unless you used attach(dat1).
Better to avoid 'attach' altogether and go with the first suggestion. That can get rather unwieldy when ordering on many columns, in which case with() is handy: dat1[with(dat1, order(val)),] -- Curt Seeliger, Data Ranger Raytheon Information Services, Contractor to ORD seeliger.c...@epa.gov 541-754-4638 Sarah On Tue, Mar 25, 2014 at 2:36 PM, John Kane <jrkrid...@inbox.com> wrote: > Has there been a change in the syntax for order() or am I just making some > stupid mistake here? > > dat1 <-read.table(text=" > name val > Alex 4 > Jim 10 > Fred 8 > Julie 44 > ",sep="",header=TRUE,stringsAsFactors=FALSE) > > John Kane > Kingston ON Canada > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
