R Observatory: Metrics for LaF version 0.8.6

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

LaF

0.8.6

Fast Access to Large ASCII Files

6packages depend

17.2Kdownloads / year

80.7%test coverage

13/13checks pass

Overview

About

Maintained by Jan van der LaanFirst published 2011-10-1912 releasesCRAN page ↗GitHub ↗

Methods for fast access to large ASCII files. Currently the following file formats are supported: comma separated format (CSV) and fixed width format. It is assumed that the files are too large to fit into memory, although the package can also be used to efficiently access files that do fit into memory. Methods are provided to access and process files blockwise. Furthermore, an opened file can be accessed as one would an ordinary data.frame. The LaF vignette gives an overview of the functionality provided.

Install

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

install.packages("LaF", 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("djvanderlaan/LaF")

Development version from djvanderlaan/LaF. 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-laf

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-LaF

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-LaF

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

Health

CRAN checks

13OK

Slowest check: 3.7 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.42

80.7%

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

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 33% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 97%
Return-value docs: 56%
References docs: 0%

Downloads

17.2K

CRAN downloads in the past year

Rank #3,996 · ~47/day · ~1.4K/mo

Releases R versions

Daily download trend is not available in this view yet.

60230 days

2.1K90 days

17.2K1 year

Compare downloads with other packages →

Also on522 r2u15 autocran2.7K conda_forge78 c2d4u

Repository

GitHub ↗ djvanderlaan/laf

54Stars

8Forks

2Open issues

1Open PRs

4Releases

135Commits

9Contributors

135 commits · Last activity 2024-12-13

Stars over time

2025-01-16 · 542026-07-07 · 54

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/djvanderlaan/laf on 2026-08-16.

Reproducibility and dev environment (1)

Makefile

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

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (2)

methodsutils

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (2)

testthat yaml

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

6direct

1indirect

easyPSID EdSurvey SEERaBomb chunked blaise datapackage

Code & Tests

People & History

People (1)

Maintainer (1)

Jan van der Laan

Author, Maintainer

Authors (1)

Jan van der Laan

Author, Maintainer

Package Timeline

12 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
0.8.6Latest
2024-12-13 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
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
0.8.4
2020-03-23 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
0.8.0
2017-11-20 · diff ↗
0.7.1
2017-10-12 · diff ↗
R
R 3.4.0 released · 2017-04-21
0.6.3
2017-01-02 · diff ↗
R
R 3.3.0 released · 2016-05-03

Show 13 earlier events

R
R 3.2.0 released · 2015-04-16
0.6.2
2015-01-28 · diff ↗
0.6.1
2014-04-21 · diff ↗
0.6
2014-04-15 · diff ↗
R
R 3.1.0 released · 2014-04-10
0.5
2013-04-25 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.4
2012-06-18 · diff ↗
R
R 2.15.0 released · 2012-03-30
0.3
2011-11-06 · diff ↗
R
R 2.14.0 released · 2011-10-31
0.2
2011-10-19
R
R 2.13.0 released · 2011-04-13

Package metadata

First published: 2011-10-19
Total releases: 12 / 15 yrs
License: GPL-3 OSI
Download size: 448 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

High-Performance and Parallel Computing with R

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("LaF")

Format

van der Laan, J. (2024). LaF: Fast Access to Large ASCII Files (Version 0.8.6) [Computer software]. https://doi.org/10.32614/CRAN.package.LaF

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 LaF version 0.8.6 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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