Description Usage Arguments Details Value Author(s) See Also
Provide short-hands for vertex set and edge construction.
1 2 3 4 |
... |
unique vertex identifiers (should be characters for |
Function d
builds a directed edge from tail to head,
function r
builds a directed edge from head to tail.
Function v
returns an object of class "vertexSet"
.
Function u
returns an object of class "undirectedEdge"
.
Both functions d
and r
return an object of class "directedEdge"
.
Jens Henrik Badsberg, Claus Dethlefsen, Luca La Rocca
vertexSet-class
,
undirectedEdge-class
and
directedEdge-class
.
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