glimpse

glimpse()

• データ構造を目視で確かめる
  • str() と目的は同じ
  • より見やすい
  • dlyrパッケージに含まれる

Rows: 615
Columns: 7
$ id             <dbl> 1902, 1902, 1902, 1903, 1903, 1903, 1904, 1904, 1904, 1905, 1905, 1905, 1906, 1906, 1906…
$ grade          <dbl> 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3…
$ school_grade_J <chr> "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3", "J3"…
$ school_grade_H <chr> "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3", "H3"…
$ grade_pair     <chr> "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3", "J3-H3"…
$ category       <chr> "new", "repeat", "omission", "new", "repeat", "omission", "new", "repeat", "omission", "…
$ n              <dbl> 3, 1, 4, 3, 0, 5, 2, 0, 4, 3, 1, 1, 1, 0, 2, 1, 1, 4, 7, 1, 1, 3, 1, 5, 3, 2, 1, 1, 2, 3…

str()だと

tibble [615 × 7] (S3: tbl_df/tbl/data.frame)
 $ id            : num [1:615] 1902 1902 1902 1903 1903 ...
 $ grade         : num [1:615] 3 3 3 3 3 3 3 3 3 3 ...
 $ school_grade_J: chr [1:615] "J3" "J3" "J3" "J3" ...
 $ school_grade_H: chr [1:615] "H3" "H3" "H3" "H3" ...
 $ grade_pair    : chr [1:615] "J3-H3" "J3-H3" "J3-H3" "J3-H3" ...
 $ category      : chr [1:615] "new" "repeat" "omission" "new" ...
 $ n             : num [1:615] 3 1 4 3 0 5 2 0 4 3 ...