filter.textstat: Return rows with matching conditions including feature...

In quanteda/quanteda.tidy: Tidyverse extensions to the quanteda

Description

Use filters to find rows of the return objects from many textstat_*() functions where conditions are true, including matches to features using "glob", "regex" or "fixed" patterns.

Usage

## S3 method for class 'textstat'
filter(
  .data,
  ...,
  pattern = NULL,
  valuetype = c("glob", "regex", "fixed"),
  case_insensitive = TRUE
)

Arguments

.data	a textstat object returned from one of the applicable textstat_* functions in quanteda
...	filter conditions passed to dplyr dplyr::filter()
pattern	a character vector, list of character vectors, dictionary, or collocations object. See pattern for details.
valuetype	the type of pattern matching: "glob" for "glob"-style wildcard expressions; "regex" for regular expressions; or "fixed" for exact matching. See valuetype for details.
case_insensitive	ignore case when matching, if TRUE

See Also

quanteda.textstats::textstat_collocations(), quanteda.textstats::textstat_keyness(), quanteda.textstats::textstat_frequency()

Examples

period <- ifelse(docvars(data_corpus_inaugural, "Year") < 1945,
                 "pre-war", "post-war")
mydfm <- tokens(data_corpus_inaugural) %>%
    dfm() %>%
    dfm_group(groups = period)
keyness <- quanteda.textstats::textstat_keyness(mydfm)
filter(keyness, pattern = "america*")
filter(keyness, p < .00001, pattern = "america*")
filter(keyness, p < .00001) %>% head()

quanteda/quanteda.tidy documentation built on April 11, 2021, 3:44 p.m.