[R-sig-ME] "varFunc" classes

[Thierry Onkelinx]

Dear Dan,

You are looking for the nlme package.

Best regards,

Thierry

ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

2016-12-13 9:48 GMT+01:00 Dan Jackson <dan_476 op hotmail.co.uk>:

> Dear lme4 authors,
>
> I am sure you are very busy so I will just ask my question very quickly. I
> was reading the book "Mixed-effects models in S and S-plus" by Pinheiro and
> Bates. On the top of page 208 of this book, there is a Table 5.1 that
> implements various "varFunc" classes. One of these classes would seem to be
> what I need for my data: varIdent - different variances per stratum. I do
> know that different subets in my data have very different variances you
> see,
> so I would need to include this.
>
> However this book relates to S-plus and I am not sure if this has been
> implemented in R, in the glmer package? My data are continuous so I would
> just need this for lmer (and not glmer). If it has not been implemented is
> there any "workaround"?
>
> Thanks in advance for any advice, Dan Jackson
>
>
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