is_empty_caugi: Is the 'caugi' graph empty?

In caugi: Causal Graph Interface

Is the caugi graph empty?

Description

Checks if the given caugi graph is empty (has no nodes).

Usage

is_empty_caugi(cg)

Arguments

cg	A caugi object.

Value

A logical value indicating whether the graph is empty.

See Also

Other queries: ancestors(), anteriors(), children(), components(), descendants(), districts(), edge_types(), edges(), exogenous(), is_acyclic(), is_admg(), is_ag(), is_caugi(), is_cpdag(), is_dag(), is_mag(), is_mpdag(), is_pdag(), is_simple(), is_ug(), m_separated(), markov_blanket(), neighbors(), nodes(), parents(), posteriors(), same_nodes(), spouses(), subgraph(), topological_sort()

Examples

cg_empty <- caugi(class = "DAG")
is_empty_caugi(cg_empty) # TRUE
cg_non_empty <- caugi(
  A %-->% B,
  class = "DAG"
)
is_empty_caugi(cg_non_empty) # FALSE

cg_no_edges_but_has_nodes <- caugi(
  A, B,
  class = "DAG"
)
is_empty_caugi(cg_no_edges_but_has_nodes) # FALSE

caugi documentation built on Oct. 28, 2026, 1:07 a.m.