numnodes

Number of nodes in graph

Syntax

N = numnodes(G)

Description

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

Examples

Number of Graph Nodes

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

G — Input graph

graph object | digraph object

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

N — Number of nodes

scalar

Number of nodes, returned as a scalar.

Extended Capabilities

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

Thread-Based Environment
Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

Version History

Introduced in R2015b