stressaddition

3.1.0

Modelling Tri-Phasic Concentration-Response Relationships

0packages depend

2Kdownloads / year

60.2%test coverage

11/13checks pass

Overview

About

Maintained by Sebastian HenzFirst published 2020-08-033 releasesCRAN page ↗

The stress addition approach is an alternative to the traditional concentration addition or effect addition models. It allows the modelling of tri-phasic concentration-response relationships either as single toxicant experiments, in combination with an environmental stressor or as mixtures of two toxicants. See Liess et al. (2019) doi:10.1038/s41598-019-51645-4 and Liess et al. (2020) doi:10.1186/s12302-020-00394-7.

Install

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

install.packages("stressaddition", 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-stressaddition

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

# 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-stressaddition

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-stressaddition

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

Health

CRAN checks

2NOTE11OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 1.2 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.39

60.2%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-06-09
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
11 OK · 1 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 72%
Return-value docs: 100%
References docs: 33%

Downloads

CRAN downloads in the past year

Rank #20,894 · ~6/day · ~169/mo

Releases R versions

Daily download trend is not available in this view yet.

15930 days

58090 days

2K1 year

Compare downloads with other packages →

Also on96 r2u1 autocran

Repository

Repository ↗ oekotox/stressaddition

Repository practices

Upstream repositoryBeta

Repository git.ufz.de/oekotox/stressaddition is linked, but repository-practices checks have not run for it yet. Checks are GitHub-only for now.

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5

Imports (2)

drc plotrix

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 2,361 (80%)Rd 590 (20%)

Code characteristics

Cyclomatic complexity: 2.0 median / 23 max
Test cases: 24 / 0.39 per code line

Test coverage

Line coverage

60%

Expression

70.2%

Tests / Examples

60.2% / 91% ex

Functions

17 9 exported

Complexity

5.4 avg / 23 max

Call network

17 nodes / 20 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

17 functions

Function	Cyclo	Coverage
plot_stress exp	17	0%
plot_survival exp	14	0%
lc exp	17	72%
reset_options	3	83%
ecxsys exp	23	93%
log10_ticks exp	3	100%

Datasets

Bundled datasets · 1

Name	Class	Rows × Cols	Also ships in
multiple_stress	data.frame	58 × 4	–

People & History

People (4)

Maintainer (1)

Sebastian Henz

Author, Maintainer

Authors (2)

Sebastian Henz

Author, Maintainer

Matthias Liess

Author

Contributors (1)

Naeem Shahid

Contributor

Helmholtz-Zentrum fuer Umweltforschung GmbH - UFZ

Funders (1)

Helmholtz-Zentrum fuer Umweltforschung GmbH - UFZ

Package Timeline

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

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
3.1.0Latest
2020-11-03 · current release · diff ↗
3.0.2
2020-09-10 · diff ↗
3.0.1
2020-08-03
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-08-03
Total releases: 3 / 6 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.5
Bundled data: 0.5 KB / 1 file
Download size: 28 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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