Specifically it is for a MNL  I just want to drop temporarily to run a
test.  I have tried upData (dataset, g=as.numeric (g) but then I am not sure
how I could apply na.omit to omit the variable.  How are you definng
"response" and "predictor"?

On Mon, Nov 17, 2008 at 3:42 AM, Mark Difford <mark_difford@yahoo.co.uk>wrote:

>
> Hi Ann,
>
> >> I want to delete one category from the dataset ... I have tried the omit
> >> command but it just returns TRUE and False values.
>
>
> You are leaving the list to guess at what you have tried, and which
> functions you are using.
>
> There are several different ways of omitting or dropping categories
> (permanently?, or temporarily in a call to a function?). If the function
> you
> are using to fit the model uses the formula interface then the following
> should do what you want. If not, then ... please read the posting guide.
>
> ##
> glm(response ~ predictor, data = YourData, subset = Category != "G", family
> = ...)
>
> You will need to do the appropriate substitutions ... This should omit the
> data associated with category G.
>
> Regards, Mark.
>
>
> Ann Leis wrote:
> >
> > I have a dataset which has categories A-G (7 categories) with
> > corresponding
> > x and y variables.  I want to delete one category from the dataset and
> run
> > a
> > logit model on only 6 categories instead of 7. How do I delete a
> category?
> > I
> > have tried the omit command but it just returns TRUE and False values.
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > 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<http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/delete-categories-tp20533194p20535629.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

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