Re: [R] specify the covariance matrix for random effect

2010-09-03 Thread Ben Bolker
Ben Bolker gmail.com> writes: > > Qiu, Weiyu ualberta.ca> writes: > > > > > Hi, > > > > I'm doing a generalized linear mixed model, and I currently use an > > R function called "glmm". > > If you could get by with an AR or ARMA structure then you could > use lme() with the 'correlation'

[R] specify the covariance matrix for random effect

2010-09-02 Thread Qiu, Weiyu
Hi, I'm doing a generalized linear mixed model, and I currently use an R function called "glmm". However, in this function they use a standard normal distribution for the random effect, which doesn't satisfy my case, i.e. my random effect also follows a normal distribution, but observations ov

Re: [R] specify the covariance matrix for random effect

2010-09-02 Thread Ben Bolker
Qiu, Weiyu ualberta.ca> writes: > > Hi, > > I'm doing a generalized linear mixed model, and I currently use an > R function called "glmm". However, in > this function they use a standard normal distribution for the random > effect, which doesn't satisfy my > case, i.e. my random effect also

[R] specify the covariance matrix for random effect

2010-09-02 Thread Qiu, Weiyu
Hi, I'm doing a generalized linear mixed model, and I currently use an R function called "glmm". However, in this function they use a standard normal distribution for the random effect, which doesn't satisfy my case, i.e. my random effect also follows a normal distribution, but observations ov