Hi,
More probably I am mistaking, but I loaded an edge list graph
(graph<-read.graph("graph.txt", format="edgelist",0, TRUE), with 7
nodes but vcount(..) shows me 8 (nodes).
The nodes in my graph are identified by a numeric number 1-7 (graph
is shown in below).
Any reason for this inconsistency? should I start numbering from zero?
here is graph:
1 2
1 5
2 4
4 6
5 7
3 1
best,
/Shahab
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