calc_elongation         Calculate Elongation Ratio from Minimum
                        Bounding Rectangle
calc_extent             Calculate Polygon Extent
calculate_geometric_attributes
                        Calculate Geometric Attributes of Spatial
                        Polygons
geomattR-package        geomattR: Calculate Geometric Attributes of
                        Spatial Polygons
get_distant_points      Find largest distance between a pair of
                        opposite vertices
