bearing_point_point bearing_tpoint_point bearing_tpoint_tpoint tgeo_centroid tgeo_convex_hull tgeo_end_value tgeo_start_value tgeo_traversed_area tgeo_value_at_timestamptz tgeo_value_n tgeo_values 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_twcentroid

tgeo_start_value() GSERIALIZED * tgeo_start_value ( const Temporal *  temp ) Return a copy of the start value of a temporal geo. Parameters [in] temp Temporal value Returns On error return NULL @csqlfn Temporal_start_value()