nc

2026.4.20

Named Capture to Data Tables

4packages depend

7.2Kdownloads / year

99.2%test coverage

12/13checks pass

Overview

About

Maintained by Toby HockingFirst published 2019-09-2316 releasesCRAN page ↗GitHub ↗

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.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("nc", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("tdhock/nc")

Development version from tdhock/nc. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-nc

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-nc

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-nc

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 14.3 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 1.03

99.2%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
13 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 66%
Return-value docs: 100%
References docs: 0%

Downloads

7.2K

CRAN downloads in the past year

Rank #5,113 · ~20/day · ~598/mo

Releases R versions

Daily download trend is not available in this view yet.

39430 days

1.7K90 days

7.2K1 year

Compare downloads with other packages →

Also on563 r2u2 autocran

Repository

GitHub ↗ tdhock/nc

19Stars

3Forks

2Open issues

0Open PRs

0Releases

393Commits

3Contributors

393 commits · Last activity 2026-04-21

Repository practices

Upstream repositoryBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/tdhock/nc on 2026-07-31.

Continuous integration (1)

GitHub Actions

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

14 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.14

Imports (1)

data.table

LinkingTo (0)

none

Suggests (13)

testthat re2 stringi ggplot2 tidyr cdata reshape2 knitr markdown rmarkdown R.utils covr arrow

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

4direct

0indirect

slurm atime aum mlr3resampling

Code & Tests

People & History

People (1)

Maintainer (1)

Toby Hocking

Author, Maintainer · added in 2024.2.21

Authors (1)

Toby Hocking

Author, Maintainer · added in 2024.2.21

Listed in earlier versions (1)

Toby Dylan Hocking

no longer listed · 2019.9.16 to 2024.1.31

Package Timeline

16 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
2026.4.20Latest
2026-04-21 · current release · diff ↗
2026.2.20
2026-02-26 · diff ↗
R
R 4.5.0 released · 2025-04-11
2025.3.24
2025-04-09 · diff ↗
2025.1.21
2025-01-21 · diff ↗
2024.9.20
2024-09-20 · diff ↗
R
R 4.4.0 released · 2024-04-24
2024.2.21
2024-02-22 · diff ↗
unarchivedReturned to CRAN
2024-02-22
archivedRemoved from CRAN
2024-02-15
issues were not corrected in time
2024.1.31
2024-02-01 · diff ↗
2023.8.24
2023-08-31 · diff ↗
2023.5.1
2023-05-02 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22

Show 10 earlier events

R
R 4.1.0 released · 2021-05-18
2020.8.6
2020-08-10 · diff ↗
2020.5.13
2020-05-14 · diff ↗
R
R 4.0.0 released · 2020-04-24
2020.3.23
2020-03-25 · diff ↗
2020.2.27
2020-03-04 · diff ↗
2020.1.16
2020-02-01 · diff ↗
2019.10.19
2019-10-28 · diff ↗
2019.9.16
2019-09-23
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-09-23
Total releases: 16 / 7 yrs
License: GPL-3 OSI
Minimum R: ≥ 2.14
Download size: 622 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →