R Observatory: Metrics for Landmarking version 1.0.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

Landmarking

1.0.2Package record

Analysis using Landmark Models

0packages depend

3.8Kdownloads / year

0.0%test coverage

13/13flavors OK

Overview

About

Maintained by Isobel BarrottCRAN page ↗GitHub ↗Issues ↗

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. 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-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). 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: 9.4 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0.2

READMEYes · 199 wordsVignettesYes · 2 · dynamicNEWSYes · 67% structured · mentions 1.0.2Citation fileNo

Help pages: 14
Examples that run: 71%5 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran) · 1 never run
Exported functions with examples: 45%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (2)

How these are measured

Downloads

3.8K

CRAN downloads in the past year

Rank #8,781 · ~11/day · ~319/mo

Releases R versions

Daily download trend is not available in this view yet.

40330 days

1.1K90 days

3.8K1 year

Compare downloads with other packages →

Also on76 r2u1 autocran

How downloads are counted

Repository

isobelbarrott/landmarking ↗Account: isobelbarrott

9Stars

5Forks

2Open issues

0Open PRs

0Releases

423Commits

4Commit identities

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

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 94
Median days to close, 50 most recently updated closed PRs: 156

Stars over time

2024-11-20 · 62026-07-07 · 9

How these are measured

PracticesBeta

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

Checks run against github.com/isobelbarrott/landmarking on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (3)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-05-16

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing Landmarking adds 96 packages (49 with compiled code, 87 MB of source tarballs). Heaviest: stringi 11 MB, TH.data 8.2 MB, ggplot2 6.0 MB.

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.

How these are counted

Code & Tests

Datasets

People & History

People (5)

Isobel Barrott

Author, Maintainer since 1.0.0 (2022)

Author

Contributor

Contributor

Contributor

Releases (2)

Pick two releases to compare their code metrics.

1.0.2Latest
record
2026-05-16 · current release · diff ↗ ·
added 2 exports
find_LME_risk_set, find_LOCF_risk_set
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
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
1.0.0
record
2022-02-15
R
R 4.1.0 released · 2021-05-18

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: 753 KB

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 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 Landmarking version 1.0.2 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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