"R 컬럼명 변경"의 두 판 사이의 차이

2021년 9월 24일 (금) 01:21 기준 최신판

df <- iris
head(df, 2)

names(df)[names(df)=="Sepal.Length"] <- "aaa"
names(df)[names(df)=="Petal.Length"] <- "bbb"
head(df, 2)

df <- iris
head(df, 2)

names(df)[1] <- "aaa"
names(df)[3] <- "bbb"
head(df, 2)

@@ 3번째 줄: / 3번째 줄: @@
 ;R 데이터프레임 컬럼명 변경
-<source lang='r' notebook>
+==컬럼명 지정==
+<syntaxhighlight lang='r' notebook>
 df <- iris
-df
+head(df, 2)
-</source>
+</syntaxhighlight>
-<source lang='r' notebook>
+<syntaxhighlight lang='r' notebook>
-names(df)[1] <- "day"
+names(df)[names(df)=="Sepal.Length"] <- "aaa"
-names(df)[2] <- "fruit"
+names(df)[names(df)=="Petal.Length"] <- "bbb"
-names(df)[3] <- "ea"
+head(df, 2)
-df
+</syntaxhighlight>
-</source>
+==컬럼위치 지정==
+<syntaxhighlight lang='r' notebook=2>
+df <- iris
+head(df, 2)
+</syntaxhighlight>
+<syntaxhighlight lang='r' notebook=2>
+names(df)[1] <- "aaa"
+names(df)[3] <- "bbb"
+head(df, 2)
+</syntaxhighlight>
 ==같이 보기==