pcalg (version 2.7-12)

pcalg2dagitty: Transform the adjacency matrix from pcalg into a dagitty object

Description

Transform the adjacency matrix of type amat.cpdag or amat.pag (for details on coding see amatType).

Usage

pcalg2dagitty(amat, labels, type = "cpdag")

Value

A dagitty graph (see the dagitty package).

Arguments

amat

adjacency matrix of type amat.cpdag or amat.pag

labels

character vector of variable (or “node”) names.

type

string specifying the type of graph of the adjacency matrix amat. It can be a DAG (type="dag"), a CPDAG (type="cpdag") or a maximally oriented PDAG (type="pdag") from Meek (1995); then the type of adjacency matrix is assumed to be amat.cpdag. It can also be a MAG (type = "mag") or a PAG (type="pag"); then the type of the adjacency matrix is assumed to be amat.pag.

Author

Emilija Perkovic and Markus Kalisch

Details

For a given adjacency matrix amat the form amat.cpdag or amat.pag and a specified graph type, this function returns a dagitty object corresponding to the graph structure specified by amat, labels and type. The resulting object is compatible with the dagitty package.

Examples

data(gmG)
n <- nrow    (gmG8$x)
V <- colnames(gmG8$x) # labels aka node names

amat <- wgtMatrix(gmG8$g)
amat[amat != 0] <- 1
if(requireNamespace("dagitty", quietly = TRUE)) {
dagitty_dag1 <- pcalg2dagitty(amat,V,type="dag")
}