[R] glmmadmb help

chchjames
Fri, 14 Oct 2011 23:06:22 -0000

Hello everyone,

I am using the alpha version of glmmadmb, and it works for most of the time
except for one of my models. The weird thing is that it has worked before, a
couple of months ago, and for some reason it won't now and nothing has
changed.

The code is:
nbin5<-glmmadmb(stainp~beetle.ev+Caged*Section/SegmentT+(1|Site)+(1|Log.code),data=dat1,family="nbinom")

And it thinks for a while before giving me the error:
Error in glmmadmb(stainp ~ beetle.ev + Caged * Section/SegmentT + (1 |  :
  The function maximizer failed
In addition: Warning message:
running command './glmmadmb -maxfn 500' had status 1

I have narrowed it down, and the factor it has trouble with is
"beetle.ev".
This is a column of binary data which is presence or absence of beetles.
There are only 0's and 1's in this column. The really weird thing is
that I
have another column for a different beetle ("beetle"), binary also,
which
works fine!

I have tried re-entering the data in another column, putting the
"beetle.ev"
data in the "beetle" column, and nothing seems to work.

Any help would be much appreciated!

Thanks,
James



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