The hafu
dataset has separate columns for the nationality of each parent:
Year Series Character Gender Father Mother Eyes Hair
1 1963 Yuki no Taiyou Sanae F Japanese American
2 1964 Cyborg 009 Joe Shimamura M American Japanese brown brown
3 1967 Lupin III Lupin III M French? Japanese? black black
4 1967 Nekome Kozou Cat-Eyed Boy M Japanese Fantasy brown
5 1972 Gatchaman Jun the Swan F green green
6 1974 Great Mazinger Jun Hono F American Japanese black black
7 1975 Ichigo Monogatari Ichigo F Scandinavian? Japanese? brown brown
8 1976 Kochira Katsushika-ku... Reiko Katherine Akimoto F Japanese? French? blue blond
9 1977 Haikara-san ga Tooru Shinobu Iijyuin M Japanese German blue blond
10 1979 Mobile Suit Gundam Amuro Ray M Japanese Canadian blue brown
Convert the data frame from wide format to long format, with a single column for the parents’ nationality and a column indicating to which parent the nationality refers. Call the first column Nationality
and the second column Parent
and call the overall data frame in long format hafu_long
.
(from: Cotton, 2013, Learning R, O’Reilly)