quanteda: corpus_subset – R documentation

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corpus_subset

Extract a subset of a corpus

Description

Returns subsets of a corpus that meet certain conditions, including direct logical operations on docvars (document-level variables). corpus_subset functions identically to subset.data.frame(), using non-standard evaluation to evaluate conditions based on the docvars in the corpus.

Usage

corpus_subset(x, subset, drop_docid = TRUE, ...)

Arguments

`x`	corpus object to be subsetted
`subset`	logical expression indicating the documents to keep: missing values are taken as false
`drop_docid`	if `TRUE`, `docid` for documents are removed as the result of subsetting.
`...`	not used

Value

corpus object, with a subset of documents (and docvars) selected according to arguments

Examples

summary(corpus_subset(data_corpus_inaugural, Year > 1980))
summary(corpus_subset(data_corpus_inaugural, Year > 1930 & President == "Roosevelt"))

quanteda

Quantitative Analysis of Textual Data

v3.0.0

GPL-3

Authors

Kenneth Benoit [cre, aut, cph] (<https://orcid.org/0000-0002-0797-564X>), Kohei Watanabe [aut] (<https://orcid.org/0000-0001-6519-5265>), Haiyan Wang [aut] (<https://orcid.org/0000-0003-4992-4311>), Paul Nulty [aut] (<https://orcid.org/0000-0002-7214-4666>), Adam Obeng [aut] (<https://orcid.org/0000-0002-2906-4775>), Stefan Müller [aut] (<https://orcid.org/0000-0002-6315-4125>), Akitaka Matsuo [aut] (<https://orcid.org/0000-0002-3323-6330>), William Lowe [aut] (<https://orcid.org/0000-0002-1549-6163>), Christian Müller [ctb], European Research Council [fnd] (ERC-2011-StG 283794-QUANTESS)

Initial release