Compute slopes of paths relative to axes.
path.slopes(coords_list, return_angles = FALSE)list of m matrices, each n x 3 matrix must contain the 3D coords for one path.
logical, whether to return angles instead of slopes. Angles are returned in degrees, and will range from -90 to +90.
m x 3 matrix, each row corresponds to a path and describes the 3 slopes of the path against the 3 planes/ x, y, and z axes (in that order).