Hi, I think you want by(TestData[ , "RATIO"], LEAID, median)
-Ista On Tue, Dec 8, 2009 at 8:36 PM, L.A. <ro...@millect.com> wrote: > > I'm just learning and this is probably very simple, but I'm stuck. > I'm trying to understand the by(). > This works. > by(TestData, LEAID, summary) > > But, This doesn't. > > by(TestData, LEAID, median(RATIO)) > > > ERROR: could not find function "FUN" > > HELP! > Thanks, > LA > -- > View this message in context: > http://n4.nabble.com/by-function-tp955789p955789.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.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.
