[R-sig-ME] Fwd: Model failed to converge in bootMer

[Francisco Fabuel]

Hi all:

In the following link of Dropbox you can find two archives (script and
data) that cause the problem.


https://www.dropbox.com/sh/pnnqg41wf6mwvum/AAB1uCdKLcsS87v4vxra8tOla?dl=0

Francisco Fabuel






2015-07-21 13:37 GMT+02:00 Ben Bolker <bbolker at gmail.com>:

> Please forward this question to r-sig-mixed-models at r-project.org.  Are
> you using the latest CRAN version (1.1-8) of lme4?
>
>   Ben Bolker
>
>
> On Tue, Jul 21, 2015 at 3:33 AM, Francisco Fabuel <pfabuel at gmail.com>
> wrote:
> > Mr. Bolker:
> >
> > I'm trying to estimate some quantities derived from a lmer object using
> > bootstrap. When I use the function bootMer, a large proportion of
> > replications seems to fail to converge, but if I program the bootstrap
> > using package boot, everything seems go well.
> >
> > Please, find attached a simple example (R script and data) of the
> problem:
> > with bootMer in 10 simulations, I've got 7 warnings:
> >
> > Warning messages:
> > 1: In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv,
> :
> >   Model failed to converge with max|grad| = 0.00132463 (tol = 0.001,
> > component 1)
> >
> >
> > Thank you in advance.
> > Francisco Fabuel
>

	[[alternative HTML version deleted]]