laplacian_matrix_signed function

Signed Graph Laplacian

The Laplacian of a signed graph.

laplacian_matrix_signed(g, norm = FALSE, sparse = FALSE)

Arguments

• g: igraph object with a sign edge attribute.
• norm: Whether to calculate the normalized Laplacian. See definitions below.
• sparse: Logical scalar, whether to return the result as a sparse matrix. The Matrix package is required for sparse matrices.

Returns

a numeric matrix

Details

See laplacian_matrix of igraph for more details. In the signed case, D is a diagonal matrix containing the absolute values of row sums of the signed adjacency matrix.

Examples

library(igraph)
g <- sample_islands_signed(3, 10, 5 / 10, 1)
laplacian_matrix_signed(g)
laplacian_matrix_signed(g, norm = TRUE)

Author(s)

David Schoch