Convert a krpoltext data.table to a quanteda corpus

Creates a quanteda::corpus() object from a data.table loaded by load_campaign_booklet() or load_party_statements(). The text column is used as the document text; all other columns become document-level variables (docvars).

Usage

as_quanteda_corpus(x, text_field = "text", docid_field = NULL, ...)

Arguments

x

A data.table (or data.frame) with at least a text column.

text_field

Character; name of the column containing document text. Defaults to "text".

docid_field

Character or NULL; name of the column to use as document IDs. If NULL, row numbers are used.

...

Additional arguments passed to quanteda::corpus().

Value

A quanteda corpus object.

Examples

if (requireNamespace("quanteda", quietly = TRUE)) {
  dt <- data.table::data.table(
    id = c("doc-1", "doc-2"),
    text = c("first text", "second text"),
    year = c(2020L, 2021L)
  )

  corp <- as_quanteda_corpus(dt, docid_field = "id")
  corp
}
#> Corpus consisting of 2 documents and 1 docvar.
#> doc-1 :
#> "first text"
#> 
#> doc-2 :
#> "second text"
#>