[EMAIL PROTECTED] wrote:
Dear all,
I found a problem with 'lme4'. Basically, once you load the package 'aod' (Analysis of Overdispersed Data), the functions 'lmer' and 'glmer' don't work anymore: library(lme4)
(fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy))
(gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
              family = binomial, data = cbpp))
install.packages("aod")
library(aod)
(fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy))
(gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
              family = binomial, data = cbpp))
Taking into account that this package is used to perform similar analyses, this could be a problem. All the best Antonio Gasparrini
Public and Environmental Health Research Unit (PEHRU)
London School of Hygiene & Tropical Medicine
Keppel Street, London WC1E 7HT, UK
Office: 0044 (0)20 79272406 - Mobile: 0044 (0)79 64925523
http://www.lshtm.ac.uk/people/gasparrini.antonio ( 
http://www.lshtm.ac.uk/pehru/ )
------------------------------------------------------------------------

Subject:
bug?
From:
<[EMAIL PROTECTED]>
Date:
Wed, 20 Aug 2008 02:49:10 +0100
To:
<[EMAIL PROTECTED]>

To:
<[EMAIL PROTECTED]>


Dear all,
I found a problem with 'lme4'. Basically, once you load the package 'aod' (Analysis of Overdispersed Data), the functions 'lmer' and 'glmer' don't work anymore: library(lme4)
(fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy))
(gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
              family = binomial, data = cbpp))
install.packages("aod")
library(aod)
(fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy))
(gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
              family = binomial, data = cbpp))

Taking into account that this package is used to perform similar analyses, this 
could be a problem.
In which sense is this a bug in lme4?? I'd say that aod has the problem. You can't write an R package so that it is guaranteed not be clobbered by something loaded subsequently.

--
  O__  ---- Peter Dalgaard             Ă˜ster Farimagsgade 5, Entr.B
 c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED])              FAX: (+45) 35327907

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