[R-sig-ME] Commonly observed error message in lmer
Luciano La Sala
lucianolasala at yahoo.com.ar
Sat Dec 27 03:39:42 CET 2008
It's me again with, maybe, one more silly question for you. As a remainder, I am running version 2.7.1 on Windows Vista. I have small dataset which consists of:
# NestID: nest indicator for each chicken. Siblings sharing the same nest have the same nest indicator.
# Chick: chick indicator consisting of a unique ID for each single chick.
# Year: 1, 2.
# ClutchSize: 1-, 2- , 3-eggs.
# HO: hatching order within each clutch (1, 2, 3 [first, second and third-hatched chick]).
# SibComp: sibling competence: present/ absent (0, 1)
# Death10: death at ten days post-hatch (0, 1)
In order to account for lack of independence at the nest level (many chicks are nested in nest), I'd like to run a GLMM with random slopes and intercepts for nests.
Using lmer, whenever I try to model two-way interaction like specified below:
model1 <- lmer(Death10~HO*ClutchSize+(1|NestID),family=binomial,1)
.... the following error message pops up:
In mer_finalize(ans, verbose) : gr cannot be computed at initial par (65)
1. What does this error mean?
I look forward to hearing from you soon!
¡Buscá desde tu celular!
Yahoo! oneSEARCH ahora está en Claro
More information about the R-sig-mixed-models