[ADMB Users] gradient_structure problem with nbinom glmm.admb in R

Rafael Mares crm53 at cam.ac.uk
Sun Jun 12 04:04:10 PDT 2011

Dear all

I am trying to run the following model using glmmADMB (ver. 0.5-2) in
R (ver. 2.13.0) in a linux terminal:


and I get the following error message:

Current maximum number of independent variables is 50000
  You need to increase the global variable MAX_NVAR_OFFSET to 58531
  This can be done by putting the line
  before the declaration of the gradient_structure object.
Error in glmm.admb(dur ~ 1, random = ~group, group = "id", data = dat,  :
  The function maximizer failed

I've done some reading, mainly on the admb-project website and posts
on this mailing list, and tried modifying the 'gradient_structure'
line in the TOP_OF_MAIN_SECTION in the nbmm.tpl file in my R library,
as I think is suggested... but I get the same error message as if
nothing had been changed. I would greatly appreciate it if someone
could clarify if I'm doing something wrong, or if it actually isn't
possible to change the gradient_structure when running glmmADMB
through R. By the way, I have no problems running the same model with

Thank you in advance for any help.
All the best,


Rafael Mares
Large Animal Research Group (LARG)
Department of Zoology
University of Cambridge
Downing Street

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