R Observatory: Metrics for mgcv version 1.9-4

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mgcv

1.9-4

Mixed GAM Computation Vehicle with Automatic Smoothness Estimation

501packages depend

1.2Mdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Simon WoodFirst published 2000-10-04171 releasesCRAN page ↗

Generalized additive (mixed) models, some of their extensions and other generalized ridge regression with multiple smoothing parameter estimation by (Restricted) Marginal Likelihood, Cross Validation and similar, or using iterated nested Laplace approximation for fully Bayesian inference. See Wood (2025) doi:10.1146/annurev-statistics-112723-034249 for an overview. Includes a gam() function, a wide variety of smoothers, 'JAGS' support and distributions beyond the exponential family.

Install

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

install.packages("mgcv", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-mgcv

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-mgcv

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-mgcv

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

Health

CRAN checks

13OK

Slowest check: 11.4 min · r-oldrel-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

99%

Documentation · exports

7

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
OK2026-07-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-07-03
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 3 earlier snapshots

ERROR2026-06-07
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 97%
Return-value docs: 90%
References docs: 65%

Downloads

1.2M

CRAN downloads in the past year

Rank #403 · ~3.3K/day · ~99.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

60K30 days

222K90 days

1.2M1 year

Compare downloads with other packages →

Also on47.4K r2u5K autocran1.1M conda_forge1 bioconda453 c2d4u

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (2)

R >= 4.4.0nlme

Imports (6)

methodsstatsgraphicsMatrixsplinesutils

LinkingTo (0)

none

Suggests (3)

parallelsurvivalMASS

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

501direct

1,571indirect

and 453 more packages.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Simon Wood

Author, Maintainer

Authors (1)

Simon Wood

Author, Maintainer

Listed in earlier versions (3)

Mike Lonergan [mel: persp.gam()

no longer listed · 0.6-2 to 0.8-9

Simon Wood Mike Lonergan <mel@mcs.st-and.ac.uk> [mel: persp.gam()

no longer listed · 0.6-1

negative binomial; snw: rest]

no longer listed · 0.6-1 to 0.8-9

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.9-4Latest
2025-11-07 · current release · diff ↗
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R 4.5.0 released · 2025-04-11
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Package metadata

First published: 2000-10-04
Total releases: 171 / 26 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 4.4.0
Bundled data: 11 KB / 2 files
Download size: 1.1 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Bayesian Inference Econometrics Analysis of Ecological and Environmental Data Mixed, Multilevel, and Hierarchical Models in R Analysis of Spatial Data

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mgcv")

Format

Wood, S. (2025). mgcv: Mixed GAM Computation Vehicle with Automatic Smoothness Estimation (Version 1.9-4) [Computer software]. https://doi.org/10.32614/CRAN.package.mgcv

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 mgcv version 1.9-4 [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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