On Fri, Mar 1, 2013 at 7:16 PM, Frank Harrell <f.harr...@vanderbilt.edu> wrote: > The lattice package uses special logic to allow for multiple left-hand-side > variables in a formula, e.g. y1 + y2 ~ x. Is there an elegant way to do > this outside of lattice? I'm trying to implement a data summarization > function that logically takes multiple dependent variables. The usual > invocation of model.frame( ) causes R to try to do arithmetic addition to > create a single dependent variable. >
Try: lm( cbind(Sepal.Length, Sepal.Width) ~., iris) -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.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.
