R Observatory: Metrics for LaF version 0.8.6

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

LaF

0.8.6Package record

Fast Access to Large ASCII Files

4packages dependsuggested by 2

12.6Kdownloads / year

80.7%test coverage

13/13flavors OK

Overview

About

Maintained by Jan van der LaanCRAN 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.

Changes in 0.8.6

Bug fixed in csv-reader with separators in first line contained in quotes.
Bug fixed in csv-reader. In case of an incomplete line (with less columns than it should have, the reader stopped without warning. It fill now generate a warning and continue reading. The missing columns are read as empty strings (resulting in NA for numeric fields).

From NEWS in the release

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. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.8 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-04-22
ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.8.6

README· In the repository, left out of the releaseVignettesYes · 2 · dynamicNEWSYes · 33% structured · mentions 0.8.6Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 26
Examples that run: 100%8 run in a plain check
Exported functions with examples: 50%
Documented parameters: 97%
Return-value docs: 56%
Help pages citing references: 0%

Vignettes (2)

LaF-benchmark PDF
LaF-manual PDF

How these are measured

Downloads

12.6K

CRAN downloads in the past year

Rank #4,185 · ~35/day · ~1.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

71230 days

2.1K90 days

12.6K1 year

Compare downloads with other packages →

Also on502 r2u7 autocran2.5K conda_forge162 c2d4u

How downloads are counted

Repository

djvanderlaan/laf ↗Account: djvanderlaan

54Stars

8Forks

2Open issues

1Open PRs

4Releases

135Commits

9Commit identities

135 commits · Last activity 2024-12-13 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 75%
Median days to close, 50 most recently updated closed issues: 402
Median days to close, 50 most recently updated closed PRs: 116

Stars over time

2025-01-16 · 542026-07-07 · 54

How these are measured

PracticesBeta

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

Checks run against github.com/djvanderlaan/laf on 2026-10-22.

Reproducibility and dev environment (1)

Makefile

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing LaF adds 1 package (1 with compiled code, 1.8 MB of source tarballs). Heaviest: Rcpp 1.8 MB.

Depends (2)

methodsutils

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (2)

testthat yaml

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

4direct

1indirect

Depends 1 · Imports 3

Suggested by 2

Depends, Imports or LinkingTo, most downloaded first

EdSurvey chunked SEERaBomb easyPSID

Suggests, most downloaded first

datapackage blaise

How these are counted

Code & Tests

People & History

People (1)

Jan van der Laan

Author, Maintainer since 0.2 (2011)

Releases (12)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.8.6Latest
record
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
record
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
record
2017-11-20 · diff ↗
0.7.1
record
2017-10-12 · diff ↗
R
R 3.4.0 released · 2017-04-21
0.6.3
record
2017-01-02 · diff ↗
R
R 3.3.0 released · 2016-05-03

Show 13 earlier eventsHide 13 earlier events

R
R 3.2.0 released · 2015-04-16
0.6.2
record
2015-01-28 · diff ↗
0.6.1
record
2014-04-21 · diff ↗
0.6
record
2014-04-15 · diff ↗ ·
removed 1 export
pattern:^[[:alpha:]]+

added 21 exports
begin, colfreq, colmean, colnmissing, colrange, colsum, current_line, detect_dm_csv, determine_nlines, get_lines, goto, laf_open, laf_open_csv, laf_open_fwf, next_block, process_blocks, read_dm, read_dm_blaise, read_lines, sample_lines, write_dm
R
R 3.1.0 released · 2014-04-10
0.5
record
2013-04-25 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.4
record
2012-06-18 · diff ↗
R
R 2.15.0 released · 2012-03-30
0.3
record
2011-11-06 · diff ↗
R
R 2.14.0 released · 2011-10-31
0.2
record
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

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 package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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