What I'm looking forward is something like this:
I want the geographical(29 states points in the case) presented on the maps, with a mass amount users out side it.
All the examples I've found with leaflet
package, igraph
and ggmaps
package is merely edges on maps or networks beside map. The only idea I have is to give the non geographical vertices a set of restricted lat/lon coordinates, for examples throw them to the Antarctic Pole.
I think there may be some method better to solve the problems.