rgraphextractvertexsubgraph
finding all paths in a graph including a vertex
I have a directed simple graph (named tutti) and a list of vertex (named risultato).
I want to find the full set of subgraph extracted by "tutti" that includes a vertex in the array risultato.
As example in the included picture the graph tutti
Given the vertex 609 (that is one vertex present in risultato) (in red on the left) i need to plot the graph in picture
How can i extract all those graphs?
Solution
The vertexes to be taken in consideration are in the array risultato.
return all path in "tutti" graph arriving to each element in risultato:
sottografierrorisopra<-graph.neighborhood (tutti,vcount(tutti),risultato, "in")
return all path in "tutti" graph starting from the vertex in the risultato #array
sottografierrorisotto<-graph.neighborhood (tutti,vcount(tutti),risultato, "out")
union of the graphs
zz<- graph.union (sottografierrorisopra, sottografierrorisotto)
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