问题描述
我知道已经有一些与此问题类似的问题，但是我是r的初学者，我无法理解答案！如果您能够为我的问题提供一个简单而不是那么复杂的答案，我将不胜感激！
我正在尝试折叠数据框中某列中的类别，其摘要如下所示（category = n）：
1-Self = 62
2-Mother = 0
3-Father = 43
4-Grandfather = 142
5-Grandmother = 17
6-Uncle = 1
7-brother = 2
8-Husband = 5
9-Aunt = 0
10-Sister = 2
11-CommunityInfluencer = 1
12-ReligIoUsfigure = 0
13-Other = 4
14-N/A = 9
我想合并6-14类，但是它们都在同一列中，我该怎么做？如果您能提供一种简单的编码方法，我将不胜感激！
谢谢！
解决方法
使用forcats::fct_other，您可以指定要将哪些类别合并为“其他”类别
例如：
library(tidyverse)
drop_cats <- c("Naboo","Stewjon")
starwars %>%
mutate(homeworld = fct_other(homeworld,drop = drop_cats))
A tibble: 87 x 13
name height mass hair_color skin_color eye_color birth_year gender homeworld species films vehicles starships
<chr> <int> <dbl> <chr> <chr> <chr> <dbl> <chr> <fct> <chr> <list> <list> <list>
1 Luke Skyw… 172 77 blond fair blue 19 male Tatooine Human <chr … <chr [2… <chr [2]>
2 C-3PO 167 75 NA gold yellow 112 NA Tatooine Droid <chr … <chr [0… <chr [0]>
3 R2-D2 96 32 NA white,bl… red 33 NA Other Droid <chr … <chr [0… <chr [0]>
4 Darth Vad… 202 136 none white yellow 41.9 male Tatooine Human <chr … <chr [0… <chr [1]>
5 Leia Orga… 150 49 brown light brown 19 female Alderaan Human <chr … <chr [1… <chr [0]>
6 Owen Lars 178 120 brown,grey light blue 52 male Tatooine Human <chr … <chr [0… <chr [0]>
7 Beru Whit… 165 75 brown light blue 47 female Tatooine Human <chr … <chr [0… <chr [0]>
8 R5-D4 97 32 NA white,red red NA NA Tatooine Droid <chr … <chr [0… <chr [0]>
9 Biggs Dar… 183 84 black light brown 24 male Tatooine Human <chr … <chr [0… <chr [1]>
10 Obi-Wan K… 182 77 auburn,whi… fair blue-gray 57 male Other Human <chr … <chr [1… <chr [5]>
# … with 77 more rows