View source: R/tree_ancestors.R
EdgeAncestry | R Documentation |
Quickly identify edges that are "ancestral" to a particular edge in a tree.
EdgeAncestry(edge, parent, child, stopAt = (parent == min(parent)))
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. |
EdgeAncestry()
returns a logical vector stating whether each edge
in turn is a descendant of the specified edge.
Martin R. Smith (martin.smith@durham.ac.uk)
Other tree navigation:
AncestorEdge()
,
CladeSizes()
,
DescendantEdges()
,
EdgeDistances()
,
ListAncestors()
,
MRCA()
,
MatchEdges()
,
NDescendants()
,
NodeDepth()
,
NodeNumbers()
,
NodeOrder()
,
RootNode()
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))
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