TreeNode.
compare_rfd
(other, proportion=False)[source]¶Calculates the Robinson and Foulds symmetric difference
State: Experimental as of 0.4.0.
Parameters: |
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Returns: | The distance between the trees |
Return type: | float |
Notes
Implementation based off of code by Julia Goodrich. The original description of the algorithm can be found in [1].
Raises: | ValueError – If the tip names between self and other are equal. |
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See also
References
[1] | 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