R:UseMethod("tbl_vars")中的错误 [英] R: Error in UseMethod("tbl_vars")

问题描述

所以我在R Studio中运行以下代码，并收到此错误:

So I'm running the code below in R Studio and getting this error:

UseMethod("tbl_vars")中的错误:没有适用于'tbl_vars'的方法 应用于字符"类的对象

Error in UseMethod("tbl_vars") : no applicable method for 'tbl_vars' applied to an object of class "character"

我不知道如何解决它，因为没有tbl_vars函数！有人可以帮忙吗?

for (i in 1:ceiling(nrow(reviews)/batch)) {
    row_start <- i*batch-batch+1

    row_end <- ifelse(i*batch < nrow(reviews), i*batch, nrow(reviews))

    print(paste("Processing row", row_start, "to row", row_end))

    reviews[row_start:row_end, ] %>%
        unnest_tokens(word, text) -> reviews_subset

    reviews_subset$row <- 1:nrow(reviews_subset)

    reviews_subset %>%
        anti_join(stopwords) %>%
        arrange(row) -> reviews_subset

    write_feather(reviews_subset, path = paste0("reviews", i, ".txt"))
}

Ps:已安装dplyr.其他已安装的软件包:pacman，feather，data.table，devtools，tidyr，tidytext，tokenizers，tibble

Ps: dplyr is installed. Also other installed packages: pacman, feather, data.table, devtools, tidyr, tidytext, tokenizers, tibble

我正在使用它来处理Yelp数据集.

I'm using it to work with Yelp dataset.

非常感谢你， 卡梅姆

ps2:数据集示例(已编辑并简化为适合此处):

> dput(as.data.frame(review))

structure(list(user_id = 1:10, review_id = 11:20, business_id = 21:30, 
    stars = c(2L, 2L, 5L, 4L, 4L, 5L, 4L, 3L, 5L, 4L), text = c("Are you the type of person that requires being seen in an expensive, overly pretentious restaurant so that you can wear it as a status symbol?  Or maybe you're a gansta who dresses like CiLo Green and wants to show the hunny's (yes, a group of them out with one man) a night on the town!", 
    "Today was my first visit to the new luna, and I was disappointed-- both because I really liked the old cafe luna, and because the new luna came well recommended", 
    "Stayed here a few months ago and still remember the great service I received.", 
    "I came here for a business lunch from NYC and had a VERY appetizing meal. ", 
    "Incredible food with great flavor. ", 
    "OMG, y'all, try the Apple Pie Moonshine.  It. Is. Seriously. Good.  Smoooooooth.   The best rum that I've sampled so far: Zaya.", 
    "Caitlin is an amazing stylist.  She took time to hear what I had to say before jumping in", 
    "Oh yeah! After some difficulties in securing dinner, my dad and I found ourselves at one of the billion Primanti's locations for a quick feast", 
    "I've been going to this studio since the beginning of January", 
    "The best cannoli, hands down!!"
    )), .Names = c("user_id", "review_id", "business_id", "stars", 
"text"), row.names = c(NA, -10L), class = "data.frame")

推荐答案

将anti_join(stopwords)更改为anti_join(stop_words). stopwords可能不存在或不是您想要的

change anti_join(stopwords) to anti_join(stop_words). stopwords probably doesn't exist or isn't what you want it to be

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