[R-sig-ME] Something broken in lme4 after update?

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Tue Oct 28 11:12:52 CET 2008

Dear Douglas,

Reinstalling lme4 from R-forge after removing it from the harddisk

Thank you,


ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
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tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be 

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
~ John Tukey

-----Oorspronkelijk bericht-----
Van: dmbates at gmail.com [mailto:dmbates at gmail.com] Namens Douglas Bates
Verzonden: maandag 27 oktober 2008 17:09
Aan: ONKELINX, Thierry
CC: R-sig-mixed-models at r-project.org
Onderwerp: Re: [R-sig-ME] Something broken in lme4 after update?

On Mon, Oct 27, 2008 at 10:27 AM, ONKELINX, Thierry
<Thierry.ONKELINX at inbo.be> wrote:
> A little update. lme4_0.999375-27 works fine after installing
> Matrix_0.999375-16 (CRAN) instead of Matrix_0.999375-17 (R-forge)

The issue is a bit more subtle than that.  You need to reinstall the
lme4 package after changing the version of the Matrix package.
There is a change in the internal code in the Matrix package between
-16 and -17.  The -16 version requires two versions of every function
in the CHOLMOD, AMD and COLAMD libraries whereas the -17 version is
back to only one version.  However, lme4 must be reinstalled (in
particular, the C code must be recompiled) after a change in the
Matrix package.

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