"R as.Date()"의 두 판 사이의 차이

2020년 5월 14일 (목) 01:49 기준 최신판

as.Date("2019-08-15")

as.Date("2019.08.15", format="%Y.%m.%d")

as.Date("08/15/2019", format="%m/%d/%Y")

options(echo=T)
as.Date("2019-08-15")+100
class( as.Date("2019-08-15")+100 )

options(echo=T)
as.character(as.Date("2019-08-15")+100)
class( as.character(as.Date("2019-08-15")+100) )

@@ 2번째 줄: / 2번째 줄: @@
 ;R as.Date()
-<source lang='r'>
+<source lang='r' run>
+as.Date("2019-08-15")
+</source>
+<source lang='r' run>
+as.Date("2019.08.15", format="%Y.%m.%d")
+</source>
+<source lang='r' run>
+as.Date("08/15/2019", format="%m/%d/%Y")
+</source>
+<source lang='r' run>
 options(echo=T)
-as.Date("2019-01-01")+100
+as.Date("2019-08-15")+100
-class( as.Date("2019-01-01")+100 )
+class( as.Date("2019-08-15")+100 )
 </source>
-<source lang='r'>
+<source lang='r' run>
 options(echo=T)
-as.character(as.Date("2019-01-01")+100)
+as.character(as.Date("2019-08-15")+100)
-class( as.character(as.Date("2019-01-01")+100) )
+class( as.character(as.Date("2019-08-15")+100) )
 </source>
 ==같이 보기==
+* [[R Sys.Date()]]
 * [[R as.character()]]
 * [[R 데이터프레임 날짜를 Date형으로 변환]]