[ADMB Users] asreml ar(1) x ar(1) spatial model

[John Sibert]

Where was this "already posted" and what is the model? Pardon my ignorance.

John

On 11/24/2011 11:48 AM, dave fournier wrote:
> There was some uninformed mumbling on the R list about the 
> non-existence of
> free software to do this kind of spatial modeling. Kaspar has already 
> posted
> an ADMB example for a Poisson spatial model.  I took Kaspar's code and 
> modified it
> slightly to work for a rectangular rather than square grid, included 
> the calcs necessary for
> a sparse tridiagonal matrix and optimizied it a bit.   I modified the 
> objective function from
> Poisson to a linear model and fit it to the wheat example.  I have 
> included versions for
> both ML and REML estimation.   It should be straigthforward to modify 
> this code to
> more complicated models such as negative binomial with various kind of 
> covariates
> and zero inflation etc.
>
>
> _______________________________________________
> Users mailing list
> Users at admb-project.org
> http://lists.admb-project.org/mailman/listinfo/users

-- 
John Sibert
Emeritus Researcher, SOEST
University of Hawaii at Manoa

Visit the ADMB project http://admb-project.org/