Note
This page is a draft and under revision.
Note
This function is not yet supported.
Returns the subgraph of Graph induced by the nodes in NIdV.
Parameters:
A Snap.py graph or a network.
Node ID vector. The subgraph consists of all nodes in NIdV and the edges between nodes in NIdV.
Whether the node IDs are preserved or not.
Return value:
For more information, see: http://en.wikipedia.org/wiki/Glossary_of_graph_theory#Subgraphs
The following example shows how to get subgraphs for TNGraph, TUNGraph, and TNEANet:
import snap
Graph = snap.GenRndGnm(snap.PNGraph, 50, 500)
nodes = snap.TIntV()
for N in Graph.GetNI(0).GetOutEdges():
nodes.Add(N)
# Get subgraph induced by the neighbors of Node 0.
SubGraph = snap.GetSubGraph(Graph, nodes)
Graph = snap.GenCircle(snap.PUNGraph, 100, 2, False)
nodes = snap.TIntV()
for N in Graph.GetNI(50).GetOutEdges():
nodes.Add(N)
SubGraph = snap.GetSubGraph(Graph, nodes)
Graph = snap.GenFull(snap.PNEANet, 10)
nodes = snap.TIntV()
for i in [0, 2, 4, 6, 8]:
nodes.Add(i)
# Get complete subgraph induced by the even-numbered nodes.
SubGraph = snap.GetSubGraph(Graph, nodes)
print SubGraph.GetEdges() # should be 20