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Get the Root Node and the Leaves of a Taxonomy Graph

Usage

get_root_node(graph)

get_leaf_nodes(graph)

Arguments

graph

a taxonomy_graph object

Value

a igraph.vs object corresponding to the root node (for get_root_node()) or the leaf nodes (for get_leaf_nodes()) of the graph.

Examples

file <- get_example_taxonomy_file()
taxonomy <- read_taxonomy(file)
get_root_node(taxonomy)
#> + 1/96 vertex, named, from 83cd2dd:
#> [1] Raubtiere
get_leaf_nodes(taxonomy)
#> + 63/96 vertices, named, from 83cd2dd:
#>  [1] Polarfuchs                Rotfuchs                 
#>  [3] Wüstenfuchs               Marderhund               
#>  [5] Afrikanischer Wildhund    Wolf                     
#>  [7] Kojote                    Goldschakal              
#>  [9] Amerikanischer Schwarzbär Europäischer Braunbär    
#> [11] Grizzlybär                Kodiakbär                
#> [13] Eisbär                    Kragenbär                
#> [15] Grosser Panda             Brillenbär               
#> [17] Malaienbär                Lippenbär                
#> [19] Walross                   Südlicher See-Elefant    
#> + ... omitted several vertices