hier_codes() returns the standardized codes for the nodes of a tree.
hier_codes(tree)a (nested) hierarchy created using hier_create()
or modified using hier_add(), hier_delete() or hier_rename().
a named character vector with names being the node-names and the values the standardized codes
h <- hier_create(root = "Total", nodes = LETTERS[1:3])
h <- hier_add(h, root = "A", nodes = c("a1", "a5"))
hier_codes(h)
#> Total A a1 a5 B C
#> "000" "010" "011" "012" "020" "030"