Last point ... On Wed, Apr 7, 2010 at 6:39 PM, Stuart Andrews <stu.andr...@gmail.com> wrote: > > Ahhh, I see my error, thanks to Steve and others who mailed me off list. > > Perhaps reading a little too quickly, I mis-interpreted the help for ddply, > in particular, the second argument: > >> ".variables: variables to split data frame by, as quoted variables, >> a >> formula or character vector" > > I assumed that I could select entire columns (i.e. the *variables* that > comprise my data.frame) using this argument.
I'm not sure if this is what you were gunning for, but just in case: If you wanted your `colwise` function to only run on a certain subset of columns of the data.frame, you would pass those column names as the 2nd arg to the call to `colwise`. Check out the examples in ?colwise if that's the case. -steve -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact ______________________________________________ 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.
