Classe « ClusterNode »

Méthode scipy.cluster.hierarchy.ClusterNode.pre_order

Signature de la méthode pre_order

def pre_order(self, func=<function ClusterNode.<lambda> at 0x7f505c3bed30>) 

Description

pre_order.__doc__

        Perform pre-order traversal without recursive function calls.

        When a leaf node is first encountered, ``func`` is called with
        the leaf node as its argument, and its result is appended to
        the list.

        For example, the statement::

           ids = root.pre_order(lambda x: x.id)

        returns a list of the node ids corresponding to the leaf nodes
        of the tree as they appear from left to right.

        Parameters
        ----------
        func : function
            Applied to each leaf ClusterNode object in the pre-order traversal.
            Given the ``i``-th leaf node in the pre-order traversal ``n[i]``,
            the result of ``func(n[i])`` is stored in ``L[i]``. If not
            provided, the index of the original observation to which the node
            corresponds is used.

        Returns
        -------
        L : list
            The pre-order traversal.