替换数据上的字符

Question

例如我想替换字符 "A"用于“Apple”和字符 "B"为“版纳”

junk <- data.frame(x = rep(LETTERS[1:4], 3), 
                   y = letters[1:12],
                   stringsAsFactors = FALSE)

这提供:

   x y
1  A a
2  B b
3  C c
4  D d
5  A e
6  B f
7  C g
8  D h
9  A i
10 B j
11 C k
12 D l

我试着用

library(dplyr)
library(stringr)

mutate_if(junk, 
          is.character, 
          str_replace_all, pattern = "A", replacement = "Apple")

但是，当我尝试对“B”执行相同操作时，它删除了“A”的先前替换。我想保留这两个结果。

mutate_if(junk, 
          is.character, 
          str_replace_all, pattern = "A", replacement = "Apple") 

我想同时保留结果“Apple”和“Bannana”

Answer 1

您可能正在寻找:

junk %>%
 mutate_if(is.character, str_replace_all, c("A" = "Apple", "B" = "Banana"))

        x y
1   Apple a
2  Banana b
3       C c
4       D d
5   Apple e
6  Banana f
7       C g
8       D h
9   Apple i
10 Banana j
11      C k
12      D l