lee_drosophila          Lee et al. (2008) Drosophila lifespan and
                        fecundity data
nutrigon_build_grid     Build a validation grid for the design-matched
                        coverage check
nutrigon_check          Design-matched coverage check for one result
nutrigon_coefs          Extract fitted quadratic coefficients from a
                        'nutrigon_fit' object
nutrigon_compare        Compare two nutritional optima and bootstrap
                        the angular separation
nutrigon_curvature      Local Gaussian and mean curvature, and
                        surface-area ratio, of a fitted surface
nutrigon_elongation     Curvature elongation ratio of a fitted
                        quadratic surface
nutrigon_equivalence    Equivalence test for alignment of two
                        nutritional optima
nutrigon_fit            Fit a quadratic response surface and locate the
                        nutritional optimum
nutrigon_grid           Build a prediction grid inside the design hull
                        for surface plotting
nutrigon_hull           Design hull as a closed polygon for plotting
nutrigon_matrix         Angular trade-off matrix for N surfaces, with
                        joint bootstrap uncertainty
nutrigon_region_polygon
                        Peak (or valley) region as a convex hull
                        polygon for plotting
nutrigon_snr            Signal-to-noise ratio of a fitted surface
nutrigon_validation_grid
                        Pre-built generic validation grid (seed = 2025)
zanco_survival          Zanco et al. (2025) Drosophila viability data
zanco_tradeoff_matrix   Pre-computed pairwise angular trade-off matrix
                        for the Zanco example
zanco_wingsize          Zanco et al. (2025) Drosophila wing size data
