加载dplyr包后运行管道代码为何出现‘could not find function "%>%<-"’错误？

Hey there! Let's break down what's going wrong here and fix it quickly.

What's Causing the Error? #

Looking at your code snippet:

projectStar_female2 <- projectStar %>% #dplyr
projectStar_female2 <- projectStar %>% filter(ssex == "female")

You've accidentally duplicated the assignment line (projectStar_female2 <- projectStar %>%) at the start. R interprets this messy syntax as trying to use a non-existent function called %>%<- (a pipe combined with assignment), which is why you get that error message.

The Correct Code #

You only need one assignment statement. Here's the cleaned-up version:

# Load dplyr first (you mentioned you already did this, but just for clarity)
library(dplyr)

# Filter for female entries with a single valid assignment
projectStar_female2 <- projectStar %>% 
  filter(ssex == "female")

Quick Tip #

When writing piped dplyr code, it's helpful to put each pipe step on a new line (with an indent) — this makes your code easier to read and avoids accidental duplication like this.

内容的提问来源于stack exchange，提问作者Taylor Hoy