Bearing_point_point Bearing_point_tpoint Bearing_tpoint_point Bearing_tpoint_tpoint Tgeo_centroid Tgeo_convex_hull Tgeo_traversed_area Tpoint_angular_difference Tpoint_azimuth Tpoint_cumulative_length Tpoint_direction Tpoint_get_x Tpoint_get_y Tpoint_get_z Tpoint_is_simple Tpoint_length Tpoint_speed Tpoint_trajectory

Tpoint_get_z() Datum Tpoint_get_z ( PG_FUNCTION_ARGS  ) Return the Z coordinates of a temporal point as a temporal float @sqlfn getZ()