[igraph] Dose the index of vertices in a graph start from 0?

[Zhijiang Wang]

Dear all,

I used the function maximal.cliques, and found the smallest index of vertices is 0.
So, dose the index of vertices in a graph start from 0?

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Best wishes,

Zhijiang Wang

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PhD Candidate

Room 407, East Segment, Material Science Building,

The International WIC Institute,

Brain Informatics,

College of Computer Science and Technology,

Beijing University of Technology,

Beijing, China.