[R-sig-ME] [FORGED] warning error question
@n@h|@r@|ern@ndez @end|ng |rom gm@||@com
Tue Mar 24 00:29:00 CET 2020
Hi Rolf and everyone, It was a typing error. The correct model is:
+offset(log(area.foto)),family=poisson(link = "log"),data=tipocat)
And the warning message is: "Warning message:
In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :
Model failed to converge with max|grad| = 0.00167856 (tol = 0.001,
Sorry for the inconvenience, obviously it is not my intention to waste
anyone's time. Thanks Rolf for noticing the error even though I would have
expected another way to tell me.
El lun., 23 mar. 2020 a las 19:33, Rolf Turner (<r.turner using auckland.ac.nz>)
> On 24/03/20 3:41 am, Anahí Fernández wrote:
> > hi!! I run this model in lme4:
> > "M.4=glm(Cuenta~carga*categ.asoc+(1|campo/foto)
> > +offset(log(area.foto)),family=poisson(link =
> > "log"),data=tipocat)"
> > And I have this warning message: "Warning message:
> > In checkConv(attr(opt, "derivs"), opt$par, ctrl = control$checkConv, :
> > Model failed to converge with max|grad| = 0.00432818 (tol = 0.001,
> > component 1)"
> > I don´t know what is that means, could you help me, please!!
> > My datatable is attached...
> > Cheers, Anahí
> (a) Since the function you invoke is glm() this would appear to be
> off-topic for r-sig-mixed-models. OTOH your formula does indeed seem to
> involve random effects. Did you *really* call glm()? Or did you
> actually call glmer()? If so you, you should be ashamed of yourself for
> such sloppiness in posing your question. People are providing help out
> of the goodness of their hearts; don't impose on their good nature by
> expecting them to be telepathic.
> (b) Assuming that you really did call glmer() --- my impression is that
> such warnings are usually false positives and may usually (???) be
> safely (???) ignored. However I'm no expert; you should perhaps wait
> for confirmation of this from the more knowledgeable.
> (c) Your "datatable" was *NOT* attached. Most attachments get stripped
> by the system (for security reasons). There are exceptions. *READ* the
> posting guide, which you appear not to have done.
> Rolf Turner
> Honorary Research Fellow
> Department of Statistics
> University of Auckland
> Phone: +64-9-373-7599 ext. 88276
Anahí R. Fernandez
CONICET- Univ. Nac. del Comahue
Quintral 1250 (8400), Bariloche, Argentina
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