l1rotation: Identify Loading Vectors under Sparsity in Factor Models

Simplify the loading matrix in factor models using the l1 criterion as proposed in Freyaldenhoven (2025) <doi:10.21799/frbp.wp.2020.25>. Given a data matrix, find the rotation of the loading matrix with the smallest l1-norm and/or test for the presence of local factors with main function local_factors().

Version:	1.0.1
Depends:	R (≥ 3.5)
Imports:	cli, doParallel, dplyr, foreach, ggplot2, magrittr, matrixStats, pracma, scales, stats
Suggests:	knitr, quarto, rmarkdown, testthat (≥ 3.0.0)
Published:	2025-05-20
DOI:	10.32614/CRAN.package.l1rotation
Author:	Simon Freyaldenhoven [aut, cph], Ryan Kobler [aut, cre]
Maintainer:	Ryan Kobler <kobleary at gmail.com>
BugReports:	https://github.com/SimonFreyaldenhoven/l1rotation/issues
License:	MIT + file LICENSE
URL:	https://kobleary.github.io/l1rotation/, https://github.com/SimonFreyaldenhoven/l1rotation
NeedsCompilation:	no
Citation:	l1rotation citation info
Materials:	README, NEWS
CRAN checks:	l1rotation results

Documentation:

Reference manual:	l1rotation.html , l1rotation.pdf
Vignettes:	documentation (source, R code)

Downloads:

Package source:	l1rotation_1.0.1.tar.gz
Windows binaries:	r-devel: l1rotation_1.0.1.zip, r-release: l1rotation_1.0.1.zip, r-oldrel: l1rotation_1.0.1.zip
macOS binaries:	r-release (arm64): l1rotation_1.0.1.tgz, r-oldrel (arm64): l1rotation_1.0.1.tgz, r-release (x86_64): l1rotation_1.0.1.tgz, r-oldrel (x86_64): l1rotation_1.0.1.tgz

Linking:

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