LaF

0.8.6

Fast Access to Large ASCII Files

6packages depend

17.4Kdownloads / 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)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

# 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: 3.0 min · r-oldrel-windows-x86_64

Check history

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

Documentation signals are not tracked yet for this package.

Downloads

17.4K

CRAN downloads in the past year

Rank #4,179 · ~48/day · ~1.5K/mo

LaF Releases R versions

Daily download trend is not available in this view yet.

65030 days

2.2K90 days

17.4K1 year

Compare downloads with other packages →

Also on509 r2u32 autocran2.6K conda_forge78 c2d4u

Repository

GitHub ↗ djvanderlaan/laf

54Stars

8Forks

2Open issues

1Open PRs

4Releases

135Commits

9Contributors

135 commits · Last activity 2024-12-13

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 2026-07-19.

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. 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

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