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

Description Details Examples

This data set describes associations between ontology terms and their ancestor terms, based on the directed acyclic graph (DAG). The format is an R object mapping the terms to all ancestor terms, where an ancestor term is a more general term that precedes the given term in the DAG (in other words, the parents, and all their parents, etc.).

Each term is mapped to a vector of ancestor terms.

  # Convert the object to a list
  xx <- as.list(ONTANCESTOR)
  # Remove Terms that do not have any ancestor
  xx <- xx[!is.na(xx)]
  if(length(xx) > 0){
    # Get the ancestor IDs for the first two elents of xx
    ids <- xx[1:2]
  }