ivy.ages module

Calculate node ages from branch lengths.

The function of interest is ages2lengths

ivy.ages.ages2lengths(node, node_ages, results={})

Convert node ages to branch lengths

Parameters:

• node (Node) – Node object
• node_ages (dict) – Dict mapping nodes to ages

Returns:

mapping of nodes to lengths

Return type:

dict

ivy.ages.min_ages(node, leaf_ages, results={})

Calculate minimum ages given fixed ages in leaf_ages

Parameters:

• node (Node) – A node object
• leaf_ages (dict) – A dict mapping leaf nodes to ages

Returns:

mapping of nodes to ages

Return type:

dict

ivy.ages.smooth(node, node_ages, results={})

adjust ages of internal nodes by smoothing