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Number of nodes in graph



N = numnodes(G) returns the number of nodes in graph G.


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Use the bucky adjacency matrix to create a directed graph, and then determine how many nodes the graph contains.

G = digraph(bucky)
G = 
  digraph with properties:

    Edges: [180x2 table]
    Nodes: [60x0 table]

N = numnodes(G)
N = 60

Input Arguments

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Input graph, specified as either a graph or digraph object. Use graph to create an undirected graph or digraph to create a directed graph.

Example: G = graph(1,2)

Example: G = digraph([1 2],[2 3])

Output Arguments

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Number of nodes, returned as a scalar.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Introduced in R2015b