getSubTerms: Retrieve a term and its children from a vocab DAG
Description
Given a Directed Acyclic Graph (DAG) represented as a graphNEL
instance, return a character vector consisting of the specified
term and all of its descendants. That is, give the list of
terms for which a path exists starting at term.
Usage
getSubTerms(dag, term)
Arguments
dag
A graphNEL representing a DAG
term
A string giving a term in the vocabulary (a node in dag)