[Rd] Evaluation puzzle
ggrothendieck at gmail.com
Thu Nov 11 23:31:31 CET 2010
On Thu, Nov 11, 2010 at 5:27 PM, Terry Therneau <therneau at mayo.edu> wrote:
> Gabor wrote:
> At the above statement you have lost the environment of your formula.
>> m$formula <- tform
> Replace this with:
> m$formula <- as.formula(tform, environment(formula))
> No, I have not "lost" an environment. I manufactured a formula which
You manufactured a "character" string, not a "formula", and character
strings don't have environments.
> lacked something needed, but without the necessary hint that I needed
> it. But that is semantics: A closer reread of help(model.frame) shows
> that the documentation is there, I had missed it.
> I'm still puzzled by recover though.
> Terry T.
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
email: ggrothendieck at gmail.com
More information about the R-devel