> Hello!Maybe somebody can help us with our current iGraph project.In this
> project is
> a network to be expanded. By 5%, 10% and so on. How can we add randomly
> vertices and edges
> to an existing network in R, iGraph? Another idea was to create a random
> network (e.g.
> "erdos.renyi.game(20, .8)") and to merge the existing network and the random
> network.
> We used "graph.union" but only the edges were merged, not the vertices.
If your graph has N vertices and you want to add a random portion such that the
union has N+M vertices, generate a random graph with erdos.renyi.game() with
N+M vertices, remove any edge having both its endpoints in {1..N}, and create
the union of this graph and your original graph.
T.
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