There is nothing here to reproduce! Please do not use R-bugs for help
requests (and please do use a meaningful subject line). Also, R-bugs is
not the place to report bugs (if you find one) in contributed packages,
and stepAIC is in a contributed package (MASS). You have not even told us
the version of that package which you have used. [All this is in the FAQ
and in ?bug.report, so please read them. Especially since you did the
same things with PR#2655.]
This is unlikely to be a bug, more likely a limitation of R's scope rules.
If you send a reproducible example to R-help you are likely to get help
about how to attack your problem in R.
On Sat, 26 Jul 2003 slteng@stat.berkeley.edu wrote:
> Full_Name: Melinda Teng
> Version: 1.7.1
> OS: Windows ME
> Submission from: (NULL) (67.118.2.50)
>
>
> Hi,
>
> I understand that R 1.7.0 version (onwards) will solve the issue in #2655.
> However, I still find the same error message. That is, a data matrix
defined
> outside the function containing the stepAIC() (alongwith glm()) is not
passed
> into the function. This data matrix is defined as one of the function
> parameters.
>
> Error in model.frame.default(formula = Y ~ X4, data = A, drop.unused.levels
> TRUE) :
> Object "A" not found
In that usage A should be a data frame, not a matrix, BTW.
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595