nc: Named Capture to Data Tables

User-friendly functions for extracting a data table (row for each match, column for each group) from non-tabular text data using regular expressions, and for melting columns that match a regular expression. Patterns are defined using a readable syntax that makes it easy to build complex patterns in terms of simpler, re-usable sub-patterns. Named R arguments are translated to column names in the output; capture groups without names are used internally in order to provide a standard interface to three regular expression 'C' libraries ('PCRE', 'RE2', 'ICU'). Output can also include numeric columns via user-specified type conversion functions.

Version: 2024.2.21
Depends: R (≥ 2.14)
Imports: data.table (≥ 1.15.0)
Suggests: testthat, re2, stringi, ggplot2, tidyr (≥ 1.0.0), cdata, reshape2, knitr, markdown, rmarkdown, R.utils, covr, arrow
Published: 2024-02-22
DOI: 10.32614/
Author: Toby Hocking [aut, cre]
Maintainer: Toby Hocking <toby.hocking at>
License: GPL-3
NeedsCompilation: no
Materials: NEWS
CRAN checks: nc results


Reference manual: nc.pdf
Vignettes: Overview of nc functionality
Capture first match
Capture all matches in a single subject string
Capture melt
Comparisons with other packages
Helper functions
Uniform interface to three regex engines
Reading regularly named files


Package source: nc_2024.2.21.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): nc_2024.2.21.tgz, r-oldrel (arm64): nc_2024.2.21.tgz, r-release (x86_64): nc_2024.2.21.tgz, r-oldrel (x86_64): nc_2024.2.21.tgz
Old sources: nc archive

Reverse dependencies:

Reverse suggests: atime, aum, mlr3resampling


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