R Observatory: Metrics for Landmarking version 1.0.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

Landmarking

1.0.2

Analysis using Landmark Models

0packages depend

3.5Kdownloads / year

0.0%test coverage

13/13checks pass

Overview

About

Maintained by Isobel BarrottFirst published 2022-02-152 releasesCRAN page ↗GitHub ↗

The landmark approach allows survival predictions to be updated dynamically as new measurements from an individual are recorded. The idea is to set predefined time points, known as "landmark times", and form a model at each landmark time using only the individuals in the risk set. This package allows the longitudinal data to be modelled either using the last observation carried forward or linear mixed effects modelling. There is also the option to model competing risks, either through cause-specific Cox regression or Fine-Gray regression. To find out more about the methods in this package, please see https://isobelbarrott.github.io/Landmarking/articles/Landmarking.

Install

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

install.packages("Landmarking", 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("isobelbarrott/Landmarking")

Development version from isobelbarrott/Landmarking. 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-landmarking

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-Landmarking

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-Landmarking

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

Health

CRAN checks

13OK

Slowest check: 9.6 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.02

0.0%

Coverage · measured lines

100%

Documentation · exports

10

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
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 199 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 71%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

3.5K

CRAN downloads in the past year

Rank #7,158 · ~10/day · ~295/mo

Releases R versions

Daily download trend is not available in this view yet.

24530 days

1.2K90 days

3.5K1 year

Compare downloads with other packages →

Also on106 r2u3 autocran

Repository

GitHub ↗ isobelbarrott/landmarking

9Stars

5Forks

2Open issues

0Open PRs

0Releases

423Commits

4Contributors

423 commits · Last activity 2026-05-16 · 0% stars, 30d

Stars over time

2024-11-20 · 62026-07-07 · 9

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/isobelbarrott/landmarking on 2026-08-09.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (10)

nlmeriskRegression dplyr pecmethodsprodlimstatssurvivalmstate ggplot2

LinkingTo (0)

none

Suggests (4)

testthat knitr rmarkdown JM

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (5)

Maintainer (1)

Isobel Barrott

Author, Maintainer

Authors (2)

Isobel Barrott

Author, Maintainer

Jessica Barrett

Author

Contributors (3)

Ruth Keogh

Contributor

David Stevens

Contributor

Michael Sweeting

Contributor

Package Timeline

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

1.0.2Latest
2026-05-17 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.0.0
2026-03-10
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2022-02-15
Total releases: 2 / 4 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Bundled data: 258 KB / 1 file
Download size: 651 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("Landmarking")

Format

Barrott, I., Barrett, J., Keogh, R., Stevens, D., & Sweeting, M. (2026). Landmarking: Analysis using Landmark Models (Version 1.0.2) [Computer software]. https://doi.org/10.32614/CRAN.package.Landmarking

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 Landmarking version 1.0.2 [Data set]. HJJB, LLC. Data release v2026-08-15. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-15, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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