ONTCHILDREN: Annotation of ontology Identifiers to their Children
In hxin/topOnto.HDO.db: TopOnto ontology db package

Description Details Examples

This data set describes associations between ontology terms and their direct children terms, based on the directed acyclic graph (DAG) defined by the Disease Ontology Consortium. The format is an R object mapping the ontology terms to all direct children terms, where a direct child term is a more specific ontology term that is immediately preceded by the given ontology term in the DAG.

Each ontologyterm is mapped to a vector of children ontology terms.

  # Convert the object to a list
  xx <- as.list(ONTCHILDREN)
  # Remove ontology IDs that do not have any children
  xx <- xx[!is.na(xx)]
  
  if(length(xx) > 0){
     # Get the parent ontology IDs for the first elents of xx
        ids <- xx[[1]]
        # Find out the terms for the first parent 
        #ID(ONTTERM[[ids[1]]])
        Term(ONTTERM[[ids[1]]])
        Synonym(ONTTERM[[ids[1]]])
        Secondary(ONTTERM[[ids[1]]])
  }