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This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

adjacency_spectrum

adjacency_spectrum(G, weight='weight')

Return eigenvalues of the adjacency matrix of G.

Parameters :

G : graph

A NetworkX graph

weight : string or None, optional (default=’weight’)

The edge data key used to compute each value in the matrix. If None, then each edge has weight 1.

Returns :

evals : NumPy array

Eigenvalues

See also

adjacency_matrix

Notes

For MultiGraph/MultiDiGraph, the edges weights are summed. See to_numpy_matrix for other options.