Is the graph a weighted graph?

Provides a logical value on whether the graph is weighted. A graph is considered to be weighted when it contains edges that all have a edge weight attribute with numerical values assigned for all edges.

Usage

is_graph_weighted(graph)

Arguments

graph

A graph object of class dgr_graph.

Value

A logical value.

Examples

# Create a graph where the edges have
# a `weight` attribute
graph <-
  create_graph() %>%
  add_cycle(n = 5) %>%
  select_edges() %>%
  set_edge_attrs_ws(
    edge_attr = weight,
    value = c(3, 5, 2, 9, 6)) %>%
  clear_selection()

# Determine whether the graph
# is a weighted graph
graph %>% is_graph_weighted()
#> [1] TRUE

# Create graph where the edges do
# not have a `weight` attribute
graph <-
  create_graph() %>%
  add_cycle(n = 5)

# Determine whether this graph
# is weighted
graph %>% is_graph_weighted()
#> [1] FALSE