Eigenvalues and eigenvectors of the adjacency matrix of a graph

graph.eigen() was renamed to spectrum() to create a more consistent API.

graph.eigen(
  graph,
  algorithm = c("arpack", "auto", "lapack", "comp_auto", "comp_lapack", "comp_arpack"),
  which = list(),
  options = arpack_defaults()
)

Arguments

graph

The input graph, can be directed or undirected.

algorithm

The algorithm to use. Currently only arpack is implemented, which uses the ARPACK solver. See also arpack().

which

A list to specify which eigenvalues and eigenvectors to calculate. By default the leading (i.e. largest magnitude) eigenvalue and the corresponding eigenvector is calculated.

options

Options for the ARPACK solver. See arpack_defaults().