ytree.tree_farm.tree_farm.TreeFarm.set_ancestry_short¶
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TreeFarm.
set_ancestry_short
(ancestry_short, *args, **kwargs)[source]¶ Select a method for cutting short the ancestry search.
This can be used to speed up merger-trees for targeted halos by specifying that the search come to an end when an ancestor with greater than 50% of the halo’s mass has been found, thereby ensuring that the most massive halo has already been found.
Parameters: ancestry_short (string) – Name of short-out method.