tidyr ile Veriyi Şekillendirme
Jeroen Boeye
Head of Machine Learning, Faktion
Mutlu aileler birbirine benzer; her mutsuz ailenin mutsuzluğu ise kendine göredir.
Lev Tolstoy
Düzenli veri kümeleri birbirine benzer; dağınık veri kümeleri ise kendine özgü biçimde dağınıktır.
Hadley Wickham
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character_df
# A tibble: 4 x 3
name homeworld species
<chr> <chr> <chr>
1 Luke Skywalker Tatooine Human
2 R2-D2 Naboo Droid
3 Darth Vader Tatooine Human
4 Obi-Wan Kenobi Stewjon Human
character_df %>%
select(name, homeworld)
# A tibble: 4 x 2
name homeworld
<chr> <chr>
1 Luke Skywalker Tatooine
2 R2-D2 Naboo
3 Darth Vader Tatooine
4 Obi-Wan Kenobi Stewjon
character_df %>%
filter(homeworld == "Tatooine")
# A tibble: 2 x 3
name homeworld species
<chr> <chr> <chr>
1 Luke Skywalker Tatooine Human
2 Darth Vader Tatooine Human
character_df %>%
mutate(is_human = species == "Human")
# A tibble: 4 x 4
name homeworld species is_human
<chr> <chr> <chr> <lgl>
1 Luke Skywalker Tatooine Human TRUE
2 R2-D2 Naboo Droid FALSE
3 Darth Vader Tatooine Human TRUE
4 Obi-Wan Kenobi Stewjon Human TRUE
character_df %>%
group_by(homeworld) %>%
summarize(n = n())
# A tibble: 3 x 2
homeworld n
<chr> <int>
1 Naboo 1
2 Stewjon 1
3 Tatooine 2



population_df
# A tibble: 4 x 2
country population
<chr> <dbl>
1 Brazil, South America 210.
2 Nepal, Asia 28.1
3 Senegal, Africa 15.8
4 Australia, Oceania 25.0
population_df %>%
separate(country, into = c("country", "continent"), sep = ", ")
# A tibble: 4 x 3
country continent population
<chr> <chr> <dbl>
1 Brazil South America 210.
2 Nepal Asia 28.1
3 Senegal Africa 15.8
4 Australia Oceania 25.0
tidyr ile Veriyi Şekillendirme