R Observatory: Metrics for lax version 1.2.4

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

lax

1.2.4

Loglikelihood Adjustment for Extreme Value Models

1packages depend

3.7Kdownloads / year

75.3%test coverage

13/13checks pass

Overview

About

Maintained by Paul J. NorthropFirst published 2019-08-257 releasesCRAN page ↗GitHub ↗

Performs adjusted inferences based on model objects fitted, using maximum likelihood estimation, by the extreme value analysis packages 'eva' https://cran.r-project.org/package=eva, 'evd' https://cran.r-project.org/package=evd, 'evir' https://cran.r-project.org/package=evir, 'extRemes' https://cran.r-project.org/package=extRemes, 'fExtremes' https://cran.r-project.org/package=fExtremes, 'ismev' https://cran.r-project.org/package=ismev, 'mev' https://cran.r-project.org/package=mev, 'POT' https://cran.r-project.org/package=POT and 'texmex' https://cran.r-project.org/package=texmex. Adjusted standard errors and an adjusted loglikelihood are provided, using the 'chandwich' package https://cran.r-project.org/package=chandwich and the object-oriented features of the 'sandwich' package https://cran.r-project.org/package=sandwich. The adjustment is based on a robust sandwich estimator of the parameter covariance matrix, based on the methodology in Chandler and Bate (2007) doi:10.1093/biomet/asm015. This can be used for cluster correlated data when interest lies in the parameters of the marginal distributions, or for performing inferences that are robust to certain types of model misspecification. Univariate extreme value models, including regression models, are supported.

Install

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

install.packages("lax", 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("paulnorthrop/lax")

Development version from paulnorthrop/lax. 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-lax

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-lax

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-lax

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

Health

CRAN checks

13OK

Slowest check: 5.1 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.23

75.3%

Coverage · measured lines

100%

Documentation · exports

8

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
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 316 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 93%
Documented parameters: 91%
Return-value docs: 67%
References docs: 67%

Downloads

3.7K

CRAN downloads in the past year

Rank #13,525 · ~10/day · ~311/mo

Releases R versions

Daily download trend is not available in this view yet.

17630 days

75290 days

3.7K1 year

Compare downloads with other packages →

Also on102 r2u18 autocran

Repository

GitHub ↗ paulnorthrop/lax

3Stars

1Forks

0Open issues

0Open PRs

7Releases

695Commits

2Contributors

loglikelihood-adjustmentregression-modellingextremesextreme-value-analysissandwichsandwich-estimatorevdpot

License GPL-3.0 · 695 commits · Last activity 2026-01-01

Stars over time

2022-08-05 · 32026-07-07 · 3

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/paulnorthrop/lax on 2026-08-16.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.3.0

Imports (8)

chandwich exdexgraphicsnumDeriv revdbayes sandwichstatsutils

LinkingTo (0)

none

Suggests (13)

distillery eva evd evir extRemes fExtremes ismev knitr mev POT rmarkdown testthat texmex

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

chantrics

Code & Tests

Datasets

People & History

People (2)

Maintainer (1)

Paul J. Northrop

Author, Maintainer, Copyright holder

Authors (2)

Paul J. Northrop

Author, Maintainer, Copyright holder

Camellia Yin

Author, Copyright holder

Copyright holders (2)

Paul J. Northrop

Author, Maintainer, Copyright holder

Camellia Yin

Author, Copyright holder

Listed in earlier versions (1)

Paul J.

no longer listed · 1.0.0 to 1.2.4

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
1.2.4Latest
2025-10-21 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.2.3
2024-02-25 · diff ↗
1.2.2
2023-12-02 · diff ↗
1.2.1
2023-09-02 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.2.0
2021-07-20 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.1.0
2019-12-05 · diff ↗
1.0.0
2019-08-25
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-08-25
Total releases: 7 / 7 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.3.0
Bundled data: 0.6 KB / 1 file
Download size: 101 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("lax")

Format

Northrop, P. J., & Yin, C. (2025). lax: Loglikelihood Adjustment for Extreme Value Models (Version 1.2.4) [Computer software]. https://doi.org/10.32614/CRAN.package.lax

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 lax version 1.2.4 [Data set]. HJJB, LLC. Data release v2026-08-16. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-16, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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