skbio.core.tree.TreeNode.accumulate_to_ancestor¶

TreeNode.accumulate_to_ancestor(ancestor)[source]¶

Return the sum of the distance between self and ancestor

Parameters:	ancestor : TreeNode The node of the ancestor to accumulate distance too
Returns:	float The sum of lengths between self and ancestor
Raises:	NoParentError A NoParentError is raised if the ancestor is not an ancestor of self NoLengthError A NoLengthError is raised if one of the nodes between self and ancestor (including self) lacks a length attribute

See also

distance

Examples

>>> from skbio.core.tree import TreeNode
>>> tree = TreeNode.from_newick("((a:1,b:2)c:3,(d:4,e:5)f:6)root;")
>>> root = tree
>>> tree.find('a').accumulate_to_ancestor(root)
4.0