Re: [R-sig-Geo] Dispersion term u in errorsarlm in spdep

2015-10-19 Thread Thomas Vladeck
alues which > could without loss be set to zero. It was the latter option that I hadn't realized was possible. Thanks so much for the recommendation! Tom [1] https://cran.r-project.org/web/packages/CARBayes/vignettes/CARBayesvignette.pdf On Mon, Oct 19, 2015 at 5:44 AM, Roger Bivand <roger.biv...@

[R-sig-Geo] Dispersion term u in errorsarlm in spdep

2015-10-18 Thread Thomas Vladeck
Hi, I'm working on a marketing project, and could use a bit of technical help and advice. I'm trying to model the spatial interdependence of a product's usage (my dependent variable is the amount of usage in a given zip code [1]) through a spatial error model, which is of the form: y = Xb + u //