TreeNode.
compare_rfd
(other, proportion=False)[source]¶Calculates the Robinson and Foulds symmetric difference
State: Experimental as of 0.4.0.
other (TreeNode) – A tree to compare against
proportion (bool) – Return a proportional difference
The distance between the trees
float
Notes
Implementation based off of code by Julia Goodrich. The original description of the algorithm can be found in 1.
ValueError – If the tip names between self and other are equal.
See also
References
Comparison of phylogenetic trees. Robinson and Foulds. Mathematical Biosciences. 1981. 53:131-141
Examples
>>> from skbio import TreeNode
>>> tree1 = TreeNode.read(["((a,b),(c,d));"])
>>> tree2 = TreeNode.read(["(((a,b),c),d);"])
>>> tree1.compare_rfd(tree2)
2.0