R Observatory: Metrics for ndjson version 0.9.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

ndjson

0.9.1

Wicked-Fast Streaming 'JSON' ('ndjson') Reader

1packages depend

61.7Kdownloads / year

39.3%test coverage

13/13checks pass

Overview

About

Maintained by Bob RudisFirst published 2016-08-277 releasesCRAN page ↗GitHub ↗

Streaming 'JSON' ('ndjson') has one 'JSON' record per-line and many modern 'ndjson' files contain large numbers of records. These constructs may not be columnar in nature, but it is often useful to read in these files and "flatten" the structure out to enable working with the data in an R 'data.frame'-like context. Functions are provided that make it possible to read in plain 'ndjson' files or compressed ('gz') 'ndjson' files and either validate the format of the records or create "flat" 'data.table' structures from them.

Install

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

install.packages("ndjson", 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("hrbrmstr/ndjson")

Development version from hrbrmstr/ndjson. 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-ndjson

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-ndjson

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-ndjson

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

Health

CRAN checks

13OK

Slowest check: 2.8 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.03

39.3%

Coverage · measured lines

100%

Documentation · exports

3

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 50%

Downloads

61.7K

CRAN downloads in the past year

Rank #2,512 · ~169/day · ~5.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.1K30 days

7.2K90 days

61.7K1 year

Compare downloads with other packages →

Also on586 r2u23 autocran3.8K conda_forge57 c2d4u

Repository

GitHub ↗ hrbrmstr/ndjson

57Stars

10Forks

4Open issues

0Open PRs

2Releases

81Commits

4Contributors

rndjsonrstatsjsonr-cyber

81 commits · Last activity 2022-10-16 · 0% stars, 30d

Stars over time

2026-07-14 · 562026-07-19 · 57

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/hrbrmstr/ndjson on 2026-08-23.

Continuous integration (1)

Travis CI

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.2.0

Imports (3)

Rcpp data.table tibble

LinkingTo (1)

Rcpp

Suggests (2)

tinytest covr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

8indirect

streamR

Code & Tests

People & History

People (6)

Maintainer (1)

Bob Rudis

Author, Maintainer · added in 0.7.0

Authors (4)

Bob Rudis

Author, Maintainer · added in 0.7.0

Deepak Bandyopadhyay

Author · added in 0.7.0

Lutz Kettner

Author · added in 0.7.0

Niels Lohmann

Author · added in 0.7.0

Contributors (2)

Maarten Demeyer

Contributor · added in 0.8.0

Neal Fultz

Contributor · added in 0.8.0

Listed in earlier versions (5)

Bob Rudis (@hrbrmstr)

no longer listed · 0.2.0

Deepak Bandyopadhyay (C++ gzstream)

no longer listed · 0.2.0 to 0.6.0

Lutz Kettner (C++ gzstream)

no longer listed · 0.2.0 to 0.6.0

Niels Lohmann (C++ json parser)

no longer listed · 0.2.0 to 0.6.0

Bob Rudis (bob@rud.is)

no longer listed · 0.5.0 to 0.6.0

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.9.1Latest
2025-03-06 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.9.0
2022-10-17 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
0.8.0
2019-11-13 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.7.0
2018-09-18 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.6.0
2018-03-05 · diff ↗
0.5.0
2017-06-28 · diff ↗
R
R 3.4.0 released · 2017-04-21

Show 2 earlier events

0.2.0
2016-08-27
R
R 3.3.0 released · 2016-05-03

Package metadata

First published: 2016-08-27
Total releases: 7 / 10 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.2.0
Download size: 143 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Web Technologies and Services

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("ndjson")

Format

Rudis, B., Bandyopadhyay, D., Demeyer, M., Fultz, N., Kettner, L., & Lohmann, N. (2025). ndjson: Wicked-Fast Streaming 'JSON' ('ndjson') Reader (Version 0.9.1) [Computer software]. https://doi.org/10.32614/CRAN.package.ndjson

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for ndjson version 0.9.1 [Data set]. HJJB, LLC. Data release v2026-08-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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