apw_spherical           A polar wander dataset
calculate_loss          Calculate Loss Function
cartesian_to_spherical
                        Convert Cartesian coordinates to spherical
                        coordinates
cross                   Compute the cross product of two vectors
dot                     Compute the dot product of two vectors
edp                     Compute the equal-distance projection of a
                        point onto the xy plane
exp_map                 Compute the exponential map on the unit sphere.
geodesic                Compute the value of the geodesic curve
                        connecting two points on the unit sphere for a
                        given set of time points t
geodesic_lower          Compute the value of the geodesic curve
                        connecting two points on the unit sphere for a
                        given time point t
goni_spherical          A tropical cyclone dataset
knots_quantile          Generate knots for the piecewise geodesic curve
                        based on the quantiles
norm2                   Compute the L2 norm (Euclidean norm) of a
                        vector
normalize               Normalize a matrix row-wise
normalize_lower         This function normalizes the the input vector v
                        by dividing its L2 norm (Euclidean norm).
penalized_linear_spherical_spline
                        Penalized Linear Spherical Spline
piecewise_geodesic      Piecewise Geodesic
spheresmooth            Piecewise Geodesic Smoothing for Spherical Data
spherical_dist          Calculate spherical distance between two
                        vectors
spherical_to_cartesian
                        Convert spherical coordinates to Cartesian
                        coordinates
