alifestd_mark_left_child_asexual

alifestd_mark_left_child_asexual(phylogeny_df: DataFrame, mutate: bool = False, *, mark_as: str = 'left_child_id') → DataFrame

Add column left_child, containing for each node its smallest-id child.

The output column name can be changed via the mark_as parameter.

Leaf nodes will be marked with their own id.

Dataframe reindexing (e.g., df.index) may be applied.

Input dataframe is not mutated by this operation unless mutate set True. If mutate set True, operation does not occur in place; still use return value to get transformed phylogeny dataframe.