[R-sig-ME] lme4 upgrade broke my old code?
marKo
mtoncic at ffri.hr
Tue Mar 17 18:13:00 CET 2015
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On 03/17/2015 05:01 PM, Stuart Luppescu wrote:
> Hello, I'm trying to update a mer object (here called
> crossed.lmer3) created about 2 years ago using lmer of a version I
> don't remember. I'm now using lme4_1.1-7 Rcpp_0.11.5 Matrix_1.1-5
> in R version 3.1.2 (2014-10-31) Platform: x86_64-redhat-linux-gnu
> (64-bit). When I do stuff that worked before, I get errors. E.g.:
>> crossed.lmer3a <- update(crossed.lmer3, ~ . + cmclsach +
>> crclsach)
> Error: $ operator not defined for this S4 class
>
> and summary() gives nothing interesting.
>> summary(crossed.lmer3)
> Length Class Mode 1 mer S4
>
> Also, code from the examples from the lme4 manual also gives
> errors: str(terms(crossed.lmer3)) Error: $ operator not defined
> for this S4 class
>
> Enter a frame number, or 0 to exit
>
> Can I get a little advice here, please?
>
I think that starting with version 1, lme4 was not compatible with the
lower version code.
I am afraid that you will have to calculate the old models again with
the newer lme4.
Cheers,
Marko
- --
Marko Ton?i?
Research Assistant
University of Rijeka
Faculty of Humanities and Social Sciences
Department of Psychology
Sveucilisna avenija 4, 51000 Rijeka, CROATIA
e-mail: mtoncic at ffri.hr
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