DiagrammeR (version 0.8.4)

is_graph_empty: Is the graph empty?

Description

Provides a logical value on whether the graph is empty (i.e., contains no nodes).

Usage

is_graph_empty(graph)

Arguments

graph

a graph object of class dgr_graph.

Value

a logical value.

Examples

library(magrittr)

# Create an empty graph
graph <- create_graph()

# Determine whether the graph is empty
is_graph_empty(graph)
#> [1] TRUE

# Create a non-empty graph
graph <-
  create_graph() %>%
  add_n_nodes(3)

# Determine whether this graph is empty
is_graph_empty(graph)
#> [1] FALSE