整洁文本的新手并遇到错误。
当我尝试将"单词"以外的任何内容传递到 unnest_tokens 函数的令牌参数中时，我得到：
eval(substitute(expr(， envir， enclos( 中的错误：找不到对象 'txt'
甚至无法运行文档示例...
library(dplyr)
library(janeaustenr)
library(tidytext)
d <- data_frame(txt = prideprejudice)
d %>% unnest_tokens(word, txt, token = "words") #Works
d %>% unnest_tokens(sentence, txt, token = "sentences") #doesnt work
d %>% unnest_tokens(ngram, txt, token = "ngrams", n = 2) #doesnt work
当我在自己的代码(不是示例(上运行它时，我得到：
eval(substitute(expr(， envir， enclos( 中的错误：参数类型无效
我希望这是一种"面手掌"类型的错误:)。奇怪的是，我什至无法运行帮助示例...
谢谢！
我无法使用所有这些软件包的当前 CRAN 版本重现这些错误。
library(dplyr)
library(janeaustenr)
library(tidytext)
d <- data_frame(txt = prideprejudice)
d %>% unnest_tokens(word, txt, token = "words")
#> # A tibble: 122,204 x 1
#> word
#> <chr>
#> 1 pride
#> 2 and
#> 3 prejudice
#> 4 by
#> 5 jane
#> 6 austen
#> 7 chapter
#> 8 1
#> 9 it
#> 10 is
#> # ... with 122,194 more rows
d %>% unnest_tokens(sentence, txt, token = "sentences")
#> # A tibble: 7,066 x 1
#> sentence
#> <chr>
#> 1 pride and prejudice by jane austen chapter 1 it is a truth unive…
#> 2 however little known the feelings or views of such a man may be on his…
#> 3 ""my dear mr."
#> 4 "bennet," said his lady to him one day, "have you heard that netherf…
#> 5 mr.
#> 6 bennet replied that he had not.
#> 7 ""but it is," returned she; "for mrs."
#> 8 "long has just been here, and she told me all about it.""
#> 9 mr.
#> 10 bennet made no answer.
#> # ... with 7,056 more rows
d %>% unnest_tokens(ngram, txt, token = "ngrams", n = 2)
#> # A tibble: 122,203 x 1
#> ngram
#> <chr>
#> 1 pride and
#> 2 and prejudice
#> 3 prejudice by
#> 4 by jane
#> 5 jane austen
#> 6 austen chapter
#> 7 chapter 1
#> 8 1 it
#> 9 it is
#> 10 is a
#> # ... with 122,193 more rows
创建于 2018-05-08 由 reprex 软件包 (v0.2.0(.
也许您应该尝试从 CRAN 重新安装这些软件包？