R split()

1 개요

R split()

mydf = iris[seq(1, nrow(iris), 20),]
mydf
if(0)"
    Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
1            5.1         3.5          1.4         0.2     setosa
21           5.4         3.4          1.7         0.2     setosa
41           5.0         3.5          1.3         0.3     setosa
61           5.0         2.0          3.5         1.0 versicolor
81           5.5         2.4          3.8         1.1 versicolor
101          6.3         3.3          6.0         2.5  virginica
121          6.9         3.2          5.7         2.3  virginica
141          6.7         3.1          5.6         2.4  virginica
"

split(mydf, mydf$Species)
if(0)"
$setosa
   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1           5.1         3.5          1.4         0.2  setosa
21          5.4         3.4          1.7         0.2  setosa
41          5.0         3.5          1.3         0.3  setosa

$versicolor
   Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
61          5.0         2.0          3.5         1.0 versicolor
81          5.5         2.4          3.8         1.1 versicolor

$virginica
    Sepal.Length Sepal.Width Petal.Length Petal.Width   Species
101          6.3         3.3          6.0         2.5 virginica
121          6.9         3.2          5.7         2.3 virginica
141          6.7         3.1          5.6         2.4 virginica
"

2 같이 보기

• R cut()
• R unsplit()
• R strsplit()
• R aggregate()

3 참고

• https://www.rdocumentation.org/packages/base/versions/3.5.3/topics/split