尝试将多个变量合并到一个类别中

Question

我刚刚开始在Rstudio工作，但我仍在努力。我得到了一个名为Concerts的数据集，其中有一个名为“ instrument1”的列，其中命名了各种不同的乐器。我被问到以下问题：

1. 在音乐会表中，将（第一个）乐器更改为一个因子，并将所有类型的萨克斯管加入“萨克斯管”类别。提示：检查该因子的频率分布，以找到所有类型的萨克斯管。

   • 我尝试了以下代码：

concerts$instrument1 <- as.factor(concerts$instrument1)
concerts %>% 
  count(instrument1) # to find out what kind of saxes there are. This turned out with the following outcome:

instrument1                          n

bariton sax                          21
alto sax                             103
bass sax                             5
tenor sax                            377
soprano sax                          22

#there also used to be a category with the name "saxophones" but that one has disappeared since running the code below.

#this code does not work, in the summary all instruments are still separate.

concerts <- concerts %>%
 mutate(instrument1 = forcats::fct_recode(instrument1,
"alto sax" = "saxophones",
"bariton sax"  = "saxophones",
"bass sax" = "saxophones",
"soprano sax" = "saxophones",
"tenor sax"  = "saxophones",
))
summary(concerts$instrument1)

#this did not work either.

concerts %>% fct_collapse(saxophones = c("alto sax","bariton sax", "bass sax", "soprano sax", "tenor sax"))
summary(concerts$instrument1)

  mutate(instrumentnew = fct_collapse(instrument1,
    saxophones = c("alto sax", "bariton sax", "bass sax", "saxophones", "soprano sax", "tenor sax")
  )) %>%

有人可以帮助我吗？