dg.ExtraEdge. Objects can be created by calls of the form
new("dg.ExtraEdgeList", ...).
returnExtraEdgeList(edge.list, vertices, extravertices = NULL, width = 2, color = "DarkSlateGrey", N = 3, type = NULL)edge.list should be a vector of
integers giving the indices of the vertices of an edge,
positive for vertices, negative for extra vertices, or
a vector of text strings with the names of the vertices. vertices,
each of a class containing dg.Vertex. extravertices,
each of a class containing dg.ExtraVertex. width of the extra edges. color
of the extra edges. N is the number of coordinates of the vertices. type of the extra edges. dg.ExtraEdge.
.Data:"list". "dg.EdgeList", directly.
Class "dg.list", directly.
Class "list", from data part.
Class "dg.NodeList", by class "dg.EdgeList".
Class "vector", by class "dg.EdgeList". Class "vector", by class "dg.list".
Class "vector", by class "list".signature(.Object = "dg.ExtraEdgeList"): ... returnFactorEdgeList
and returnBlockEdgeList.