sw_people, sw_films,
sw_species, sw_planets,
sw_starships and sw_vehicles are interrelated
lists about entities in the Star Wars Universe. The data was originally
retrieved from the Star Wars API previously available at
http://swapi.co using the R package rwars. The Star Wars API
appears to have moved to https://pipedream.com/apps/swapi
since that time.
library(purrr)
map_chr(sw_films, "title")
#> [1] "A New Hope" "Attack of the Clones"
#> [3] "The Phantom Menace" "Revenge of the Sith"
#> [5] "Return of the Jedi" "The Empire Strikes Back"
#> [7] "The Force Awakens"Elements that contain URLs provide a way to link the lists together.
For example, the films element of each person contains URLs
for the films they have appeared in. For example, Luke Skywalker has
been in five films.
luke <- sw_people[[1]]
names(luke)
#> [1] "name" "height" "mass" "hair_color" "skin_color"
#> [6] "eye_color" "birth_year" "gender" "homeworld" "films"
#> [11] "species" "vehicles" "starships" "created" "edited"
#> [16] "url"
luke[["films"]]
#> [1] "http://swapi.co/api/films/6/" "http://swapi.co/api/films/3/"
#> [3] "http://swapi.co/api/films/2/" "http://swapi.co/api/films/1/"
#> [5] "http://swapi.co/api/films/7/"These URLs can be looked up in the the sw_films list to
find the titles of the films.
# Create a mapping between titles and urls
film_lookup <- map_chr(sw_films, "title") %>%
set_names(map_chr(sw_films, "url"))
# The films Luke is in
film_lookup[luke[["films"]]] %>% unname()
#> [1] "Revenge of the Sith" "Return of the Jedi"
#> [3] "The Empire Strikes Back" "A New Hope"
#> [5] "The Force Awakens"