propagate_relations  R Documentation 
An 'ontology_index' can contain multiple relations (for example in the case of the Gene Ontology, "is_a"
and "part_of"
could be stored as separate properties in an ‘ontology_index'). Transitive relations (i.e. relations such that x related to y and y related to z implies x related to z, for example the relation ’is an ancestor of') stored by an ‘ontology_index' can be propagated using this function. The ’inverse relations' (i.e. x inversely related to y if y related to x) can also be propagated by setting the use_inverse_relations
parameter to TRUE
.
propagate_relations( ontology, roots, relations, use_inverse_relations = FALSE, exclude_roots = FALSE )
ontology 

roots 
Character vector of term IDs from which relations will be propagated. 
relations 
Character vector given names of transitive relations to be propagated. 
use_inverse_relations 
Boolean vector indicating whether to propagate inverse relations. If 
exclude_roots 
Boolean determining whether to remove the given 
Character vector of terms
get_ancestors
, get_descendants
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