This package was removed from CRAN on 2026-05-14. Its history is shown below.

Reason: email to the maintainer is undeliverable

Details below reflect version 0.1.2, its last release before removal.

ALTopt

0.1.2

Optimal Experimental Designs for Accelerated Life Testing

0packages depend

2.5Kdownloads / year

–test coverage

–checks pass

Overview

About

Maintained by Kangwon Seo3 releasesCRAN page ↗

Creates the optimal (D, U and I) designs for the accelerated life testing with right censoring or interval censoring. It uses generalized linear model (GLM) approach to derive the asymptotic variance-covariance matrix of regression coefficients. The failure time distribution is assumed to follow Weibull distribution with a known shape parameter and log-linear link functions are used to model the relationship between failure time parameters and stress variables. The acceleration model may have multiple stress factors, although most ALTs involve only two or less stress factors. ALTopt package also provides several plotting functions including contour plot, Fraction of Use Space (FUS) plot and Variance Dispersion graphs of Use Space (VDUS) plot. For more details, see Seo and Pan (2015) doi:10.32614/RJ-2015-029.

Install

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

url <- "https://cran.r-project.org/src/contrib/Archive/ALTopt/ALTopt_0.1.2.tar.gz"
pkgFile <- "ALTopt_0.1.2.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 (0.1.2) 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-altopt

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-ALTopt

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

Health

CRAN checks

CRAN check results are not tracked yet.

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-03-10
0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 13%
Documented parameters: 89%
Return-value docs: 100%
References docs: 13%

Downloads

2.5K

CRAN downloads in the past year

Rank #24,559 · ~7/day · ~208/mo

Releases R versions

Daily download trend is not available in this view yet.

030 days

090 days

2.5K1 year

Compare downloads with other packages →

Also on159 r2u55 autocran88 c2d4u

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (1)

R >= 3.0.0

Imports (3)

cubaturelatticemethods

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

–indirect (not tracked)

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Kangwon Seo

Author, Maintainer

Authors (2)

Kangwon Seo

Author, Maintainer

Rong Pan

Author

Package Timeline

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

archivedRemoved from CRAN
2026-05-14
email to the maintainer is undeliverable
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
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
0.1.2
2019-12-13 · diff ↗
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
0.1.1
2015-08-28 · diff ↗
R
R 3.2.0 released · 2015-04-16
0.1.0
2015-01-17

Show 1 earlier events

R
R 3.1.0 released · 2014-04-10

Package metadata

Total releases: 3
License: GPL-3 OSI
Minimum R: ≥ 3.0.0
Download size: 20 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Design of Experiments (DoE) & Analysis of Experimental Data

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