barren | R Documentation |
Find barren, sterile, orphaned vertices
barren(graph, v = graph$v)
orphaned(graph, v = graph$v)
sterile(graph, v = graph$v)
graph |
an object of class |
v |
set of vertices of |
Barren vertices (within v
) are those
that have no proper descendants also within v
.
Sterile (orphaned) vertices in v
have no
children (parents) also within v
.
orphaned()
: find vertices with no parents
sterile()
: find vertices with no children in the same set
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