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Sep 20th, 2019
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  1. # -------- Read File ----------
  2. # 일반 파일
  3. source = read.delim("source.txt", header=FALSE, sep=" ")
  4. source
  5.  
  6. # csv 파일읽기
  7. source_csv = read.csv("mlb-player-stats-Batters.csv")
  8. source_csv
  9.  
  10. # 대용량 파일
  11. library("data.table")
  12. source_csv2 = fread("mlb-player-stats-Batters.csv")
  13. source_csv2
  14.  
  15. # 엑셀 파일 읽기
  16. install.packages("readxl")
  17. library("readxl")
  18. read_excel("source.xlsx")
  19.  
  20.  
  21.  
  22. # -------- Write File ----------
  23. # 파일 쓰기
  24. write.csv(source, "write.txt")
  25. write.csv(source, "write.txt", row.names = FALSE)
  26. fwrite(source_csv, "write_csv.csv")
  27.  
  28. # tsv 쓰기
  29. install.packages("readr")
  30. library("readr")
  31. write_csv(source_csv, "write_csv2.csv")
  32.  
  33. # 엑셀 쓰기
  34. install.packages("xlsx")
  35. library("xlsx")
  36. write.xlsx(source_csv, "write.xlsx")
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