Re: [R] Inconsistent linear model calculations

From: Gavin Simpson <gavin.simpson_at_ucl.ac.uk>
Date: Fri, 16 May 2008 13:58:50 +0100

On Thu, 2008-05-15 at 14:50 +0100, e-letter wrote:
> 2008/5/15 Douglas Bates <bates@stat.wisc.edu>:
> > Did you happen to notice the part at the bottom of every message about
> > "provide commented, minimal, self-contained, reproducible code"?
> >
> Sorry, don't understand what that statement means in my context.
>
> > Considering that the result you quote from "251" has 2 coefficients
> > and the result from "171" has 3 coefficients one might contemplate the
> > possibility that you are fitting different models or perhaps using
> > different data. However we can't verify anything about the causes
> > because we have no data regarding the problem.
>
> data below:
>
> y a b c d e f
> 1 300 39.87 39.85 39.90 39.87333 90000
> 2 400 45.16 45.23 45.17 45.18667 160000
> 3 500 50.72 51.03 50.90 50.88333 250000
> 4 600 56.85 56.80 57.02 56.89000 360000
> 5 700 63.01 63.09 63.14 63.08000 490000
> 6 800 69.52 59.68 69.63 66.27667 640000
>
> so substitute a in my generic equation below for data column e (e.g.
> 39.87...) and b for f (e.g. 9e4).
>
> >
> > Perhaps you are Brian Ripley's evil twin trying to provoke him. I
> > would say that references to a nonexistent version "171" are
> > deliberately provocative.
>
> No idea and couldn't care less who br is:
>
> R : Copyright 2003, The R Development Core Team
> Version 1.7.1 (2003-06-16)
>
> Get your facts correct before spouting further rubbish.

I'm sorry "e-letter", but that is just not an acceptable attitude for this list.

I could explain Doug's BR comment (it was just a little bit of fun), but I guess from your answer you haven't been on the list for very long - and you might come to regret caring less who BR is - the assistance he has given me and countless other UseR's other the years has been invaluable.

I'm amazed people still bothered to help you after this response - just goes to show that most people on this list are incredibly helpful and are doing their bit to help people use a wonderful piece of software; furthering the cause.

There really isn't an R version 171 or even 251; the printed output from the R session *you* quote shows that.

Glad you got your problem sorted in the end.

G

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Received on Fri 16 May 2008 - 13:01:38 GMT

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