R substr()

1 개요[ | ]

R substr()
  • "Substrings Of A Character Vector → 캐릭터 벡터의 부분문자열"
  • 캐릭터 벡터에서 부분문자열을 추출하거나 교체한다.
substr("ABCDEF", 3, 3) ## [1] "C"
substr("ABCDEF", 3, 5) ## [1] "CDE"
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1, 1)   ## [1] "A" "a" "1" "Q"
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1, 3)   ## [1] "ABC" "abc" "123" "QWE"
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1, 2:3) ## [1] "AB"  "abc" "12"  "QWE"
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1:2, 4)   ## [1] "ABCD" "bcd"  "1234" "WER" 
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1:4, 4)   ## [1] "ABCD" "bcd"  "34"   "R"   
substr(c("ABCDEFGH","abcdefgh","12345678","QWERTYUI"), 1:4, 4:7) ## [1] "ABCD" "bcde" "3456" "RTYU"

2 같이 보기[ | ]

3 참고[ | ]

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