String 字元/Sapce 去除多餘空格

• 從網頁或者資料庫擷取下來的文字資料，常會發生左邊或者右邊有多餘的空格
• R 語言
  • 使用 trimws() 函數清除文字中多餘的空格
  • 搭配 which 參數調整：
  • trimws(x, which = "left") ：去除文字左邊的空格
  • trimws(x, which = "right") ：去除文字右邊的空格
  • trimws(x, which = "both") ：去除文字左邊與右邊的空格

shaq <- "     Shaquille O'Neal     "

trimws(shaq, which = "left")
## [1] "Shaquille O'Neal     "

trimws(shaq, which = "right")
## [1] "     Shaquille O'Neal"

trimws(shaq, which = "both")
## [1] "Shaquille O'Neal"

Reference:

• 如何掌控資料：關於文字在 Python 與 R 語言處理文字