Compute a matrix Laplacian

Compute a matrix Laplacian

Laplacian(W)

Arguments

W	Squared weight matrix

Value

The matrix Laplacian of W

Examples

uniformeW=matrix(1,3,3)
Laplacian(uniformeW)
#>      [,1] [,2] [,3]
#> [1,]    2   -1   -1
#> [2,]   -1    2   -1
#> [3,]   -1   -1    2