>>
>
> Try substitute:
>
>> do.call("substitute", list(newFmla, setNames(list(as.name("x1c")), "x1")))
> y ~ log(x1c) + x2 * x3
>
Damn. That's pretty. I'd say "setNames" a magic bullet too.Thanks very much. The approach suggested by Michael and Bert has the little shortcoming that grepping for "x1" also picks up similarly named variables like "x1new" and "x1old". I've not yet found a similar downside with Gabor's method. pj > > -- > Statistics & Software Consulting > GKX Group, GKX Associates Inc. > tel: 1-877-GKX-GROUP > email: ggrothendieck at gmail.com -- Paul E. Johnson Professor, Political Science Assoc. Director 1541 Lilac Lane, Room 504 Center for Research Methods University of Kansas University of Kansas http://pj.freefaculty.org http://quant.ku.edu ______________________________________________ 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.
