dagitty: ancestorGraph – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

ancestorGraph

Ancestor Graph

Description

Creates the induced subgraph containing only the vertices in v, their ancestors, and the edges between them. All other vertices and edges are discarded.

Usage

ancestorGraph(x, v = NULL)

Arguments

`x`	the input graph, a DAG, MAG, or PDAG.
`v`	variable names.

Details

If the input graph is a MAG or PDAG, then all *possible* ancestors will be returned (see Examples).

Examples

g <- dagitty("dag{ z <- x -> y }")
ancestorGraph( g, "z" )

g <- dagitty("pdag{ z -- x -> y }")
ancestorGraph( g, "y" ) # includes z

dagitty

Graphical Analysis of Structural Causal Models

v0.3-1

GPL-2

Authors

Johannes Textor, Benito van der Zander, Ankur Ankan

Initial release

2021-01-20