| EdgeAncestry {TreeTools} | R Documentation |
Ancestors of an edge
Description
Quickly identify edges that are "ancestral" to a particular edge in a tree.
Usage
EdgeAncestry(edge, parent, child, stopAt = (parent == min(parent)))
Arguments
edge |
Integer specifying the number of the edge whose child edges should be returned. |
parent |
Integer vector corresponding to the first column of the edge
matrix of a tree of class |
child |
Integer vector corresponding to the second column of the edge
matrix of a tree of class |
stopAt |
Integer or logical vector specifying the edge(s) at which to terminate the search; defaults to the edges with the smallest parent, which will be the root edges if nodes are numbered Cladewise or in Preorder. |
Value
EdgeAncestry() returns a logical vector stating whether each edge
in turn is a descendant of the specified edge.
Author(s)
Martin R. Smith (martin.smith@durham.ac.uk)
See Also
Other tree navigation:
AncestorEdge(),
CladeSizes(),
DescendantEdges(),
EdgeDistances(),
ListAncestors(),
MRCA(),
MatchEdges(),
NDescendants(),
NodeDepth(),
NodeNumbers(),
NodeOrder(),
RootNode()
Examples
tree <- PectinateTree(6)
plot(tree)
ape::edgelabels()
parent <- tree$edge[, 1]
child <- tree$edge[, 2]
EdgeAncestry(7, parent, child)
which(EdgeAncestry(7, parent, child, stopAt = 4))