Get number of vertices in neighbor_graph object — nvertices.neighbor_graph • adjoin

Get the number of vertices in a neighbor_graph object.

Usage

# S3 method for class 'neighbor_graph'
nvertices(x, ...)

Arguments

x: A neighbor_graph object.
...: Additional arguments (currently ignored).

Value

An integer representing the number of vertices in the graph.

Examples

adj_matrix <- Matrix::Matrix(c(0, 1, 1, 0, 1, 0, 1, 0, 0), 
                            nrow = 3, byrow = TRUE, sparse = TRUE)
ng <- neighbor_graph(adj_matrix)
nvertices(ng)  # Should return 3
#> [1] 3