Try this:
fo <- y ~ x
fo[[2]] <- as.name("z")
fo
On 10/1/07, Rebecca Sela <[EMAIL PROTECTED]> wrote:
> 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
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
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