hetero_general          Bayesian fitting of Spatial General Model with
                        heteroscedastic normal error term.
hetero_sar              Bayesian fitting of Spatial AutoRegressive
                        (SAR) model with heteroscedastic normal error
                        term.
hetero_sem              Bayesian fitting of Spatial Error Model (SEM)
                        model with heteroscedastic normal error term.
hom_general             Bayesian fitting of Spatial General Model with
                        homoscedastic normal error term.
hom_sar                 Bayesian fitting of Spatial AutoRegressive
                        (SAR) model with homoscedastic normal error
                        term.
hom_sem                 Bayesian fitting of Spatial Error Model (SEM)
                        with homoscedastic normal error term.
