“ sep”不是从“ namespace：dplyr”导出的对象

Question

obtaining n-grams following this book on tydy-text: http://tidytextmining.com/ngrams.html

The code:

library(tidyr)

bigrams_separated <- austen_bigrams %>%
  separate(bigram, c("word1", "word2"), sep = " ")

bigrams_filtered <- bigrams_separated %>%
  filter(!word1 %in% stop_words$word) %>%
  filter(!word2 %in% stop_words$word)

# new bigram counts:
bigram_counts <- bigrams_filtered %>% 
  count(word1, word2, sort = TRUE)

I get an error:

Warning: Error in : 'sep' is not an exported object from 'namespace:dplyr'

Answer 1

Try this code not loading tidyr:

bigrams_separated <- austen_bigrams %>%
mutate(word1 = sub(" .*", "", bigram),
       word2 = sub(".* ", "", bigram))

Answer 2

我遇到了相同的错误，似乎可以通过指定tidyr :: separate（）来解决