AncestralRelations

descendants

ancestors

children

parents

neighbours

spouses

adjacentNodes

markovBlanket

Retrieve the names of all variables in a given graph that are in the specified 
ancestral relationship to the input variable <code>v</code>.

A port of the web-based software 'DAGitty', available at
<https://dagitty.net>, for analyzing structural causal models
(also known as directed acyclic graphs or DAGs).
This package computes covariate adjustment sets for estimating causal
effects, enumerates instrumental variables, derives testable
implications (d-separation and vanishing tetrads), generates equivalent
models, and includes a simple facility for data simulation.

Johannes Textor

dagitty

Graphical Analysis of Structural Causal Models

AncestralRelations function

<dl><dt>x</dt>
<dd>the input graph, of any type.</dd>
<dt>v</dt>
<dd>name(s) of variable(s).</dd>
<dt>proper</dt>
<dd>logical. By default (<code>proper=FALSE</code>), the <code>descendants</code> or <code>ancestors</code>
of a variable include the variable itself. For (<code>proper=TRUE</code>), the variable itself 
is not included.
<code>descendants(x,v)</code> retrieves variables that are are reachable from <code>v</code> via 
a directed path.
<code>ancestors(x,v)</code> retrieves variables from which <code>v</code> is reachable via a 
directed path.
<code>children(x,v)</code> finds all variables <code>w</code> connected to <code>v</code> 
by an edge \(v\) -&gt; \(w\).
<code>parents(x,v)</code> finds all variables <code>w</code> connected to <code>v</code> 
by an edge \(w\) -&gt; \(v\).
<code>markovBlanket(x,v</code>) returns <code>x</code>'s parents, its children, and all other
parents of its children. The Markov blanket always renders <code>x</code> independent
of all other nodes in the graph.
By convention, <code>descendants(x,v)</code> and <code>ancestors(x,v)</code> include 
<code>v</code> but <code>children(x,v)</code> and <code>parents(x,v)</code> do not.</dd></dl>

Arguments

Ancestral Relations — AncestralRelations

<dl>

<dt>x</dt>
<dd>the input graph, of any type.</dd>


<dt>v</dt>
<dd>name(s) of variable(s).</dd>


<dt>proper</dt>
<dd>logical. By default (<code>proper=FALSE</code>), the <code>descendants</code> or <code>ancestors</code>
of a variable include the variable itself. For (<code>proper=TRUE</code>), the variable itself 
is not included.
<code>descendants(x,v)</code> retrieves variables that are are reachable from <code>v</code> via 
a directed path.
<code>ancestors(x,v)</code> retrieves variables from which <code>v</code> is reachable via a 
directed path.
<code>children(x,v)</code> finds all variables <code>w</code> connected to <code>v</code> 
by an edge \(v\) -&gt; \(w\).
<code>parents(x,v)</code> finds all variables <code>w</code> connected to <code>v</code> 
by an edge \(w\) -&gt; \(v\).
<code>markovBlanket(x,v</code>) returns <code>x</code>'s parents, its children, and all other
parents of its children. The Markov blanket always renders <code>x</code> independent
of all other nodes in the graph.
By convention, <code>descendants(x,v)</code> and <code>ancestors(x,v)</code> include 
<code>v</code> but <code>children(x,v)</code> and <code>parents(x,v)</code> do not.</dd>

</dl>

Ancestral Relations

AncestralRelations: Ancestral Relations

Description

Usage

Arguments

Examples