Incompatibility Issue with docnames Function in corpus and tokens dfm Objects

[oushiei120]

I used to be able to use the docnames function on corpus and tokens dfm objects in the quanteda package. However, it seems that I am no longer able to do so. Previously, after using the readtext function to read files, I would directly assign the file names to the tokens object as docvar1 or docvar2. Now, I am facing an issue with this approach and I am seeking a solution.

corpus_six <- readtext("",
                       docvarsfrom = "filenames") %>% corpus()
token_faster <- tokenize_fasterword(corpus_six)

token_select <- token_faster %>% 
  tokens(remove_punct = TRUE, remove_numbers = TRUE) 

docnames(token_select) <- docnames(corpus_six)
docvars(token_select, "author") <- docvars(corpus_six, "docvar1")
docnames(token_select) <- docvar(token_select, "author")

and I run this code but :

> docnames(token_select) <- docnames(corpus_six)
Error in UseMethod("docnames") : 
  no applicable method for 'docnames' applied to an object of class "c('corpus', 'character')"

[oushiei120]

The tutorial is not clear：https://quanteda.io/reference/docnames.html

[kbenoit]

This should still work fine. If you can supply a reproducible example using reprex::reprex() I can examine this further.

[oushiei120]

This should still work fine. If you can supply a reproducible example using reprex::reprex() I can examine this further.

I found some guy meet the same issue like me

error-in-usemethoddocvars-no-applicable-method-for-docvars

docvars-produces-an-error-after-update-to-r-version-4-3-0

@kbenoit

[kbenoit]

Hi @oushiei120 - Yes I am aware of those posts, but unlike you, they posted them in the wrong location. They should be issues here on GitHub, not questions on SO. So you did well by posting that here.

However to diagnose this issue, I would need to see your exact session output, including the part where it states your package version information. If possible, some data that illustrates the problem so that I can reproduce it.

We introduced some changes to docvars() in the last two releases and the way they work with the readtext package, and this is likely causing your issues, but we cannot know without this information.