Is the caugi graph empty?

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(), children(), descendants(), districts(), edge_types(), edges(), exogenous(), is_acyclic(), is_admg(), is_caugi(), is_cpdag(), is_dag(), is_pdag(), is_ug(), m_separated(), markov_blanket(), neighbors(), nodes(), parents(), same_nodes(), spouses(), subgraph()

Examples

cg_empty <- caugi(class = "DAG")
is_empty_caugi(cg_empty) # TRUE
#> [1] TRUE
cg_non_empty <- caugi(
  A %-->% B,
  class = "DAG"
)
is_empty_caugi(cg_non_empty) # FALSE
#> [1] FALSE

cg_no_edges_but_has_nodes <- caugi(
  A, B,
  class = "DAG"
)
is_empty_caugi(cg_no_edges_but_has_nodes) # FALSE
#> [1] FALSE