总结n()R中未使用的参数 [英] Unused argument in summarise n() R

问题描述

我正在尝试运行以下代码:

I am trying to run the following code:

 DF2 %>%

 group_by(doy, yearadded) %>%

 summarise(n_entries= n(doy, yearadded))

哪个给我错误:

Error in n(doy, yearadded) : unused arguments (doy, yearadded)

我的yearended字段是一个字符类，doy是一个数字，这是为什么它不起作用或还有其他原因吗?

My yearadded field is a character class and doy is a numeric, is that why it's not working or is there some other reason?

推荐答案

n()不带任何参数.会是

library(dplyr)
DF2 %>%
 group_by(doy, yearadded) %>%
 summarise(n_entries= n())

---

或更紧凑

---

Or more compactly

count(DF2, doy, yearadded)

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