Dear Sebastian, Sebastian Meyer wrote on 2020-04-08 14:15:
Do both of your R installations use the same version of lme4 ?
THX, good point! On R3.6.2 I have lme4 1.1-21 (2019-03-05) and on R3.6.3 indeed yesterday's lme4 1.1-23.
A new lme4 version has been published on CRAN yesterday and some changes regarding default numerical tolerances in optimizations could explain the difference in your results. See the NEWS here: https://cran.r-project.org/web/packages/lme4/news.html
I see. Since the other 93 (!) tests passed, I will submit a fix only for _this_ data set. A little bit nasty since we recently published a paper about software validation: https://dx.doi.org/10.1208/s12248-020-0427-6 The supplementary material contains code for IQ (installation qualification). If a user on r-devel (Linux) or r-patched (Solaris) runs it – with the current lme4 - he/she will be slapped in the face and the suppl. material will tell him/her: "If a test fails […] the package did not pass IQ in the user’s computational environment (hardware, operating system, R-release) and _must not_ be used."
Splendid. Cheers, Helmut -- Ing. Helmut Schütz BEBAC – Consultancy Services for Bioequivalence and Bioavailability Studies Neubaugasse 36/11 1070 Vienna, Austria T +43 1 2311746 E helmut.schu...@bebac.at W https://bebac.at/ F https://forum.bebac.at/ ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
