calculate_vcs           Extracts varying coefficient estimates (for
                        SVC, TVC and STVC models).
do_bma                  Undertake undertake coefficient averaging using
                        Bayesian Model Avergaing (BMA), weighting
                        different models by their probabilities
evaluate_models         Creates and evaluates multiple varying
                        coefficient GAM GP smooth models (SVC or STVC)
gam_model_probs         Calculates the model probabilities of the
                        different GAM models generated by
                        evaluate_models'
plot_1d_smooth          Plots a 1-Dimensional GAM smooth
plot_2d_smooth          Plots a 2-Dimensional GAM smooth
productivity            US States Economic Productivity Data
                        (1970-1985)
us_data                 US States boundaries
