quanteda (version 3.3.1)

flatten_dictionary: Flatten a hierarchical dictionary into a list of character vectors

Description

Converts a hierarchical dictionary (a named list of named lists, ending in character vectors at the lowest level) into a flat list of character vectors.

Usage

flatten_dictionary(dictionary, levels = 1:100)

Value

A named list of character vectors

Arguments

dictionary

a dictionary-class object to be flattened

levels

an integer vector indicating levels in the dictionary

Examples

dict1 <- dictionary(
    list(populism=c("elit*", "consensus*", "undemocratic*", "referend*",
                    "corrupt*", "propagand", "politici*", "*deceit*",
                    "*deceiv*", "*betray*", "shame*", "scandal*", "truth*",
                    "dishonest*", "establishm*", "ruling*"))
     )
flatten_dictionary(dict1)

dict2 <- dictionary(
    list(level1a = list(level1a1 = c("l1a11", "l1a12"),
         level1a2 = c("l1a21", "l1a22")),
         level1b = list(level1b1 = c("l1b11", "l1b12"),
         level1b2 = c("l1b21", "l1b22", "l1b23")),
         level1c = list(level1c1a = list(level1c1a1 = c("lowest1", "lowest2")),
         level1c1b = list(level1c1b1 = c("lowestalone"))))
     )
flatten_dictionary(dict2)
flatten_dictionary(dict2, 2)
flatten_dictionary(dict2, 1:2)