DiagrammeR (version 0.9.2)

is_property_graph: Is the graph a property graph?

Description

Provides a logical value on whether the graph is property graph (i.e., all nodes have an assigned type value and all edges have an assigned rel value).

Usage

is_property_graph(graph)

Arguments

graph

a graph object of class dgr_graph.

Value

a logical value. # Create a graph with 2 nodes (with `type` # values) and a single edge (with a `rel`) simple_property_graph <- create_graph() add_node( type = "a", label = "first") add_node( type = "b", label = "second") add_edge( from = "first", to = "second", rel = "rel_1")

# This is a property graph but confirm # that this is TRUE by using the # `is_property_graph()` function is_property_graph(simple_property_graph) #> [1] TRUE

# If a `type` attribute is removed, then # this graph will no longer be a property # graph simple_property_graph node_type( node = get_node_ids( ., "label == 'first'"), "delete") is_property_graph() #> [1] FALSE

# An empty graph will return FALSE create_graph() is_property_graph() #> [1] FALSE