Message-ID: <40e66e0b0910281145x445f8e80j329f79a705f4b899@mail.gmail.com>
Date: 2009-10-28T18:45:13Z
From: Douglas Bates
Subject: error in LMM fit
In-Reply-To: <109007.29797.qm@web23702.mail.ird.yahoo.com>
On Wed, Oct 28, 2009 at 1:11 PM, Bernet Kato <b_s_kato at yahoo.com> wrote:
> Dear Prof. Bates,
>
> I am fitting a linear mixed model using the lmer routine and I am getting
> the error message below:
>
> Error in mer_finalize(ans) : Calculated PWRSS for a LMM is negative
> In addition: Warning message:
> 1: In mer_finalize(ans) : false convergence (8)
>
> ?I am not sure what is causing this error and how to deal with it. Please
> advise me.
It is best to send queries like this to the
R-SIG-Mixed-Models at R-project.org mailing list. When doing so please
include a reproducible example and the output of
sessionInfo()
so we can tell which version of the lme4 package you are using and in
what environment.
I have taken the liberty of copying the list on this reply.