R 如何将因素分解为；其他"；（不基于尺寸）

我正在处理NHL球员数据，我基本上想将一部分球员的分数与其他人进行比较。所以我有球员数据，看起来像这样：

 Player Season Team  Position    GP   TOI     G     A     P    P1 `P/60`
 <chr>   <int> <chr> <chr>    <int> <dbl> <dbl> <dbl> <dbl> <dbl>  <dbl>
 Aaron~   2019 FLA   D           35 603.      3     2     5     3   0.5 
 Adam ~   2019 CBJ   D            4  35.5     0     0     0     0   0  
Adam ~   2019 T.B   L           23 218.      2     7     9     5   2.48

---

fct\u lump

不适合处理您想要的灵活性。您应该使用dplyr的

if_else

来表示一个与所有其他观察结果的对比

library(dplyr)
NHL %>% 
    mutate(Player = if_else(Player == "Kasperi Kapanen", "Kasperi Kapanen",
                                                         "others"))

或

案例(当

用于多个ifelse比较时)

NHL %>% 
    mutate(Player = case_when(
                       Player == "Kasperi Kapanen" ~ "Kasperi Kapanen", 
                       Player == "Adam" ~ "Adam",
                       TRUE ~ "others" 
                             ))

---

您可以使用

forcats:：fct_other

并指定要保留的级别。其他一切都会成为你给的“其他”的名字。

library(dplyr)
NHL %>% 
    mutate(Player = if_else(Player == "Kasperi Kapanen", "Kasperi Kapanen",
                                                         "others"))

NHL %>% 
    mutate(Player = case_when(
                       Player == "Kasperi Kapanen" ~ "Kasperi Kapanen", 
                       Player == "Adam" ~ "Adam",
                       TRUE ~ "others" 
                             ))