maybe I didn't understand the problem, but you can do sth like formula<-y~X1+X2+X3 lm(update.formula(formula,f(Y)~.))
maybe ?all.vars or ?terms will help you too. hth. Rebecca Sela schrieb: > I am writing a program in which I would like to take in a formula, change the > response (Y) variable into something else, and then pass the formula, with > the new Y variable to another function. That is, I am starting with > formula <- Y~X1+X2+X3 > and I'd like to do something like > Y <- formula$Y > newY <- f(Y) > lm(newY~X1+X2+X3) > So far, it seems that my only option will be a very complicated sequence of > steps involving match.call(). Is there a simpler way to change the response > variable in a formula? > > Thanks in advance! > > Rebecca > > -- > Rebecca Sela > Statistics Department > Stern School of Business > New York University > > ______________________________________________ > 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. > -- Eik Vettorazzi Institut für Medizinische Biometrie und Epidemiologie Universitätsklinikum Hamburg-Eppendorf Martinistr. 52 20246 Hamburg T ++49/40/42803-8243 F ++49/40/42803-7790 ______________________________________________ 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.
