[R] weights error in svyglm

Lee, Laura laura.lee at ncdenr.gov
Fri Apr 11 17:54:29 CEST 2014

Thanks! That worked. However, what error distribution is assumed? I was hoping to use a negative binomial.

-----Original Message-----
From: Milan Bouchet-Valat [mailto:nalimilan at club.fr] 
Sent: Friday, April 11, 2014 11:37 AM
To: Lee, Laura
Cc: r-help at r-project.org
Subject: Re: [R] weights error in svyglm

Le vendredi 11 avril 2014 à 13:38 +0000, Lee, Laura a écrit :
> Hi!
> I am just learning the 'svyglm' package and have run into an error for 
> which I have not found a solution. My data have been collected from a 
> stratified random survey. Here is the code:
> NB3<-glm.nb(COLNUM~Year+Depth+MESH+offset(LogEffort),data=data)
> dstrat <- svydesign(id=~1, strata=~STRATA, weights = ~weight,
> data=data)
> SNB3 <- svyglm(NB3, design=dstrat)
> The error that is returned is:
> Error in model.frame.glm(formula = list(coefficients = 
> c(-6.96858807641624,  :
>   object '.survey.prob.weights' not found
> I would appreciate any assistance in solving this problem.
The error is somewhat strange, but you should not pass the result of
glm.nb() to svyglm (where have you found this idea?). Just do
SNB3 <- svyglm(COLNUM ~ Year + Depth + MESH + offset(LogEffort), design=dstrat)


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