ytree.arbor.arbor.Arbor.set_selector¶
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Arbor.
set_selector
(selector, *args, **kwargs)¶ Sets the tree node selector to be used.
This sets the manner in which halo progenitors are chosen from a list of ancestors. The most obvious example is to select the most massive ancestor.
- selector : string
- Name of the selector to be used.
Any additional arguments and keywords to be provided to the selector function should follow.
>>> import ytree >>> a = ytree.load("rockstar_halos/trees/tree_0_0_0.dat") >>> a.set_selector("max_field_value", "mass")