Gamma2graph {graphicalExtremes}

Convert matrix to graph

Description

Creates a graph object representing the graph structure implied by a parameter matrix.

Usage

Gamma2graph(Gamma, tol = get_large_tol(), check = TRUE)

Sigma2graph(Sigma, tol = get_large_tol(), k = NULL, full = FALSE, check = TRUE)

Theta2graph(Theta, tol = get_large_tol(), k = NULL, full = FALSE, check = TRUE)

partialMatrixToGraph(M)

Arguments

Gamma

Numeric d \times d variogram matrix.

tol

Numeric scalar. Entries in the precision matrix with absolute value smaller than this are considered to be zero.

check

Whether to check the inputs and call ensure_matrix_symmetry_and_truncate_zeros on the outputs.

Sigma

Numeric d \times d or (d-1) \times (d-1) covariance matrix.

k

NULL if the input/output matrix is \Sigma/\Theta. Else, an integer between 1 and d indicating the value of k in \Sigma^k, \Theta^k.

full

Logical. If TRUE and !is.null(k), the input/output matrix is a d \times d matrix with the kth row filled with zeros.

Theta

Numeric d \times d or (d-1) \times (d-1) precision matrix.

M

Partial matrix with NA entries indicating missing edges.

Value

An igraph::graph object.

See Also

Other parameter matrix transformations: Gamma2Sigma(), chi2Gamma(), par2Matrix()