R语言 替换字符串的字符 – chartr() 函数
R编程语言中的chartr()函数 是用来做字符串替换的。它用作为参数指定的新字符替换一个字符串中所有匹配的现有字符。
语法: chartr(old, new, x)
参数
- old: 要被替换的旧字符串
- new: 新字符串
- x: 目标字符串
例1 :
# R program to illustrate
# chartr function
# Initializing a string
x <- "Geeks GFG"
# Calling the chartr() function
# which will substitute G with Z
# to the above specified string
chartr("G", "Z", x)
输出:
[1] "Zeeks ZFZ"
例2 :
# R program to illustrate
# chartr function
# Initializing a string
x <- "GeeksforGeeks Geeks"
# Calling the chartr() function
# which will substitute G with 1,
# k with 2 and s with 3
# to the above specified string
chartr("Gks", "123", x)
输出
[1] "1ee23for1ee23 1ee23"