我们可以使用str_replace_all方法来替换某一列中的多个字符串。语法:str_replace_all(dataframe$column_name, c(“string1” = “new string”,……….., “stringn” = “new string”)例子:# load the library library(stringr) # create a dataframe with 3 columns data = data.frame(name1=c('java...
str_replace_all() 替换所有匹配到的结果 str_replace(strings, phone, "XXX-XXX-XXXX") #> [1] "apple" #> [2] "XXX-XXX-XXXX" #> [3] "XXX-XXX-XXXX" #> [4] "Work: XXX-XXX-XXXX; Home: 543.355.3679" str_replace_all(strings, phone, "XXX-XXX-XXXX") #> [1] "apple" #> [2...
str_replace(string, pattern, replacement) # 和sub一样,只替换第一个匹配字符 str_replace_all(string, pattern, replacement) # 和gsub一样,替换所有匹配字符 1. 2. fruits <- c("one apple", "two pears", "three bananas") str_replace(fruits, "[aeiou]", "-") #正则表达式,即对字符串中的小...
stringr包里专用于处理字符串向量的函数,这些函数有一个共同特点,str开头。 1.检测字符串长度:str_length(x) 2.字符串拆分:str_split() 3.按位置提取字符串:str_sub() 4.字符检测:str_detect(x,"h"):重点掌握用法 5.字符串替换:str_replace()/str_replace_all() 6.字符删除:str_remove()/str_remove...
str_replace_all() 替换所有匹配到的结果 str_replace(strings, phone, "XXX-XXX-XXXX") #> [1] "apple" #> [2] "XXX-XXX-XXXX" #> [3] "XXX-XXX-XXXX" #> [4] "Work: XXX-XXX-XXXX; Home: 543.355.3679" str_replace_all(strings, phone, "XXX-XXX-XXXX") ...