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traj: Feature-Based Clustering of Longitudinal Trajectories

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 spectral clustering.

Version: 3.0.0
Depends: R (≥ 2.10)
Imports: stats, cluster, clusterCrit, fclust, igraph, e1071
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-01-28
DOI: 10.32614/CRAN.package.traj
Author: Marie-Pierre Sylvestre [aut], Laurence Boulanger [aut, cre], Gillis Delmas Tchouangue Dinkou [ctb], Dan Vatnik [ctb]
Maintainer: Laurence Boulanger <laurence.boulanger at umontreal.ca>
License: MIT + file LICENSE
URL: https://CRAN.R-project.org/package=traj
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: traj results

Documentation:

Reference manual: traj.html , traj.pdf

Downloads:

Package source: traj_3.0.0.tar.gz
Windows binaries: r-devel: traj_3.0.0.zip, r-release: traj_3.0.0.zip, r-oldrel: traj_3.0.0.zip
macOS binaries: r-release (arm64): traj_3.0.0.tgz, r-oldrel (arm64): traj_3.0.0.tgz, r-release (x86_64): traj_3.0.0.tgz, r-oldrel (x86_64): traj_3.0.0.tgz
Old sources: traj archive

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.