compute_elastic_shape_mean
                        Compute an elastic full Procrustes mean for a
                        collection of curves
fit_alignment_proc2d    Optimal rotation and scaling alignment to a
                        smooth curve
fit_mean                Mean estimation for open planar curves.
get_Procrustes_fit_from_param
                        Helper functions for calculating Procrustes
                        data curve from rotation, scaling and
                        translation parameters.
get_center              Calculate the center of a curve
get_distance            Distance to a smooth curve
get_evals               Evaluate a curve on a grid
get_optimal_t           Finds optimal alignment for discrete open
                        curves
get_polygon_length      Calculate the polygon length of a curve
get_procrustes_fit      Get Procrustes data curve from mean object.
plot.elastic_shape_mean
                        Plot method for planar elastic Procrustes mean
                        curves
