R Observatory: Metrics for traj version 3.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

traj

3.1.0Package record

Feature-Based Clustering of Longitudinal Trajectories

0packages depend

8.1Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Laurence BoulangerCRAN page ↗

Identifies clusters of individual longitudinal trajectories. In the spirit of Leffondre et al. (2004), the procedure involves identifying each trajectory to a point in the space of measures. In this context, a measure is a quantity meant to capture a certain characteristic feature of the trajectory. The points in the space of measures are then clustered using a version of the Spectral Clustering algorithm.

Changes in 3.1.0

Changed the eigensolver from eigen to eigs_sym (package RSpectra) to speed up trajClusters().
Fixed a small bug that occurred in trajMeasures when ID=FALSE and some trajectories have less than 3 observations.
Made substantial changes to the trajdata data set.
Fixed a mistake in the trajReduced() function that caused it to output the wrong number of clusters in certain situations.
Fixed labeling of the columns in the fuzzy.partition component of trajClusters().
In the scatterplots() function, the title of the plots is more informative.
To facilitate interpretation, the summary() function, as it applies to the output of the trajClusters() function, now includes a top_p argument which identifies, for each cluster, the top_p measures which are most extreme.
The plot() function now additionally displays the cluster medians of each standardized measure.

From NEWS.md in the release

Install

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

install.packages("traj", 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-traj

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-traj

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-traj

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: 1.9 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-04
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 3.1.0

READMEYes · 83 wordsVignettesNoNEWSYes · 100% structured · mentions 3.1.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 6 (1 internal)includes a package overview page
Examples that run: 0%4 never run
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 50%
Help pages citing references: 50%

How these are measured

Downloads

8.1K

CRAN downloads in the past year

Rank #4,643 · ~22/day · ~675/mo

Releases R versions

Daily download trend is not available in this view yet.

61630 days

1.8K90 days

8.1K1 year

Compare downloads with other packages →

Also on101 r2u3 autocran

How downloads are counted

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing traj adds 17 packages (14 with compiled code, 14 MB of source tarballs). Heaviest: igraph 4.8 MB, Rcpp 1.8 MB, RcppEigen 1.7 MB.

Depends (1)

R >= 3.5.0

Imports (8)

statsclusterclusterCrit fclust igraph e1071 RSpectraMatrix

LinkingTo (0)

none

Suggests (3)

knitr rmarkdown testthat

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 (6)

Laurence Boulanger

Author, Maintainer since 2.0.0 (2023) · added in 2.0.0

Marie-Pierre Sylvestre

Author

Gillis Delmas

Contributor · added in 3.1.0

Jean-Benoit Bergeron

Contributor · added in 3.1.0

Tchouangue Dinkou

Contributor · added in 3.1.0

Dan Vatnik

Contributor

Previously maintained by Gillis Delmas TCHOUANGUE DINKOU (1.3 to 1.3.1) and Dan Vatnik (1.0 to 1.2).

Listed in earlier versions (1)

Gillis Delmas Tchouangue Dinkou

no longer listed · 1.3 to 3.0.1

Releases (13)

Pick two releases to compare their code metrics.

3.1.0Latest
record
2026-09-08 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
3.0.1
record
2026-01-28 · diff ↗
3.0.0
record
2026-01-28 · diff ↗ ·
removed 4 exports
Step1Measures, Step2Selection, Step3Clusters, critplot

added 4 exports
CVIplot, trajClusters, trajMeasures, trajReduce
R
R 4.5.0 released · 2025-04-11
2.2.1
record
2025-02-02 · diff ↗ ·
added 2 exports
critplot, scatterplots
2.2.0
record
2024-07-05 · diff ↗
R
R 4.4.0 released · 2024-04-24
2.1.0
record
2024-03-28 · diff ↗
2.0.1
record
2023-12-07 · diff ↗
2.0.0
record
2023-12-04 · diff ↗ ·
removed 8 exports
step1measures, step2factors, step3clusters, wrapperTraj, plotMedTraj, plotMeanTraj, plotBoxplotTraj, plotCombTraj

added 3 exports
Step1Measures, Step2Selection, Step3Clusters
R
R 4.3.0 released · 2023-04-21
1.3.1
record
2023-04-12 · diff ↗
1.3
record
2023-01-22 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18

Show 10 earlier eventsHide 10 earlier events

R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
1.2
record
2015-01-13 · diff ↗
1.1
record
2014-12-01 · diff ↗
1.0
record
2014-10-22
R
R 3.1.0 released · 2014-04-10

Package metadata

First published: 2014-10-22
Total releases: 13 / 12 yrs
License: MIT + file LICENSE OSI · relicensed from GPL-2 in 1.3
Minimum R: ≥ 3.5.0
Bundled data: 6.4 KB / 1 file
Download size: 38 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("traj")

Format

Boulanger, L., Gillis Delmas, Jean-Benoit Bergeron, Tchouangue Dinkou, Sylvestre, M., & Vatnik, D. (2026). traj: Feature-Based Clustering of Longitudinal Trajectories (Version 3.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.traj

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 traj version 3.1.0 [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.

Report a problem with this page →