def get_ordering(self):
if self.__ordering is None:<EOL><INDENT>self.__ordering = []<EOL>for cluster in self.__clusters:<EOL><INDENT>for index_object in cluster:<EOL><INDENT>optics_object = self.__optics_objects[index_object]<EOL>if optics_object.reachability_distance is not None:<EOL><INDENT>self.__ordering.append(optics_object.reachability_distance)<EOL><DEDENT><DEDENT><DEDENT><DEDENT>return self.__ordering<EOL>
!
        @brief Returns clustering ordering information about the input data set.
        @details Clustering ordering of data-set contains the information about the internal clustering structure in line with connectivity radius.

        @return (ordering_analyser) Analyser of clustering ordering.

        @see process()
        @see get_clusters()
        @see get_noise()
        @see get_radius()
        @see get_optics_objects()