Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111
> -----Original Message-----
> From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r-
> project.org] On Behalf Of Paul Johnson
> Sent: Wednesday, April 27, 2011 10:20 AM
> To: Duncan Murdoch
> Cc: R Devel List
> Subject: Re: [Rd] Wish R Core had a standard format (or generic
> function) for "newdata" objects
>
> On Tue, Apr 26, 2011 at 7:39 PM, Duncan Murdoch
> <murdoch.duncan at gmail.com> wrote:
>
> > If you don't like the way this was done in my three lines above, or
> by Frank
> > Harrell, or the Zelig group, or John Fox, why don't you do it
> yourself, and
> > get it right this time? ?It's pretty rude to complain about things
> that
> > others have given you for free, and demand they do it better.
> >
> > Duncan Murdoch
> >
>
> I offer sincere apology for sounding that way. I'm not attacking
> anybody. I'm just talking, asking don't you agree this were
> standardized. And you disagree, and I respect that since you are
> actually doing the work.
>
> >From a "lowly user's point of view", I wish "you experts" out there
> would tell us one way to do this, we could follow your example.
>
> When there's a regression model fitted with 20 variables in it, and
> half of them are numeric, 4 are unordered factors, 3 are ordinal
> factors, and what not, then this is a hard problem for many of us
> ordinary users. Or it is tedious. They want "keep everything fixed,"
> except one variable that takes on different specified values. And
> they want to do that for every variable, one at a time.
>
> Stata has made this easy for many models, R could as well, if we
> coalesced on a more-or-less standard way to create newdata objects for
> predict.
>
> But, in the end, I agree with your sentiment. I just have to do this,
> show you it is handy. I think Zelig's setx has it about right, I'll
> pursue that strategy.
>
> pj
> --
> Paul E. Johnson
> Professor, Political Science
> 1541 Lilac Lane, Room 504
> University of Kansas
>
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