R Observatory: Metrics for trafo version 1.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

This package was removed from CRAN on 2026-01-30. Its history is shown below.

Reason: requires archived package 'pryr'

Details below reflect version 1.0.1, its last release before removal.

trafo

1.0.1

Estimation, Comparison and Selection of Transformations

0packages depend

–downloads / year

–test coverage

–checks pass

Overview

About

Maintained by Ann-Kristin Kreutzmann2 releasesCRAN page ↗

Estimation, selection and comparison of several families of transformations. The families of transformations included in the package are the following: Bickel-Doksum (Bickel and Doksum 1981 doi:10.2307/2287831), Box-Cox, Dual (Yang 2006 doi:10.1016/j.econlet.2006.01.011), Glog (Durbin et al. 2002 doi:10.1093/bioinformatics/18.suppl_1.S105), gpower (Kelmansky et al. 2013 doi:10.1515/sagmb-2012-0030), Log, Log-shift opt (Feng et al. 2016 doi:10.1002/sta4.104), Manly, modulus (John and Draper 1980 doi:10.2307/2986305), Neglog (Whittaker et al. 2005 doi:10.1111/j.1467-9876.2005.00520.x), Reciprocal and Yeo-Johnson. The package simplifies to compare linear models with untransformed and transformed dependent variable as well as linear models where the dependent variable is transformed with different transformations. Furthermore, the package employs maximum likelihood approaches, moments optimization and divergence minimization to estimate the optimal transformation parameter.

Install

R (source archive)Ubuntu (r2u)openSUSE (OBS)

url <- "https://cran.r-project.org/src/contrib/Archive/trafo/trafo_1.0.1.tar.gz"
pkgFile <- "trafo_1.0.1.tar.gz"
download.file(url, pkgFile)
install.packages(pkgFile, type = "source", repos = NULL)

This package is no longer on CRAN, so install.packages() cannot fetch it by name. This downloads the last archived source (1.0.1) and builds it locally. Install its dependencies first, and note that building from source needs the usual compiler toolchain.

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-trafo

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

# 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-trafo

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

Health

CRAN checks

CRAN check results are not tracked yet.

Code health

Yes

Tests · ratio 0.11

not tracked

Coverage

100%

Documentation · exports

6

Dependencies · direct

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 95%
Return-value docs: 100%
References docs: 21%

Downloads

Releases R versions

Daily download trend is not available in this view yet.

Compare downloads with other packages →

Also on83 r2u21 autocran

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.2.4

Imports (6)

FNN moments pryrgraphicsgrDeviceslmtest

LinkingTo (0)

none

Suggests (2)

testthat R.rsp

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

–indirect (not tracked)

Nothing depends on this yet.

Code & Tests

People & History

People (4)

Maintainer (1)

Ann-Kristin Kreutzmann

Author, Maintainer

Authors (4)

Ann-Kristin Kreutzmann

Author, Maintainer

Lily Medina

Author

Piedad Castro

Author

Natalia Rojas-Perilla

Author

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
archivedRemoved from CRAN
2026-01-30
requires archived package 'pryr'
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
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
1.0.1
2018-11-27 · diff ↗
1.0.0
2018-07-30
R
R 3.5.0 released · 2018-04-23

Package metadata

Total releases: 2
License: GPL-2 OSI
Minimum R: ≥ 3.2.4
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("trafo")

Format

Medina, L., Castro, P., Kreutzmann, A., & Rojas-Perilla, N. (n.d.). trafo: Estimation, Comparison and Selection of Transformations (Version 1.0.1) [Computer software]. Retrieved August 13, 2026, from https://CRAN.R-project.org/package=trafo

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 trafo version 1.0.1 [Data set]. HJJB, LLC. Data release v2026-08-13. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-13, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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