litterfitter

0.1.4

Fits a Collection of Curves to Single-Cohort Decomposition Data

0packages depend

2.4Kdownloads / year

90.7%test coverage

11/13checks pass

Overview

About

Maintained by Will CornwellFirst published 2022-09-153 releasesCRAN page ↗GitHub ↗

Fit different model forms to single-cohort litter decomposition data (mass remaining through time) using likelihood-based estimation. Models span simple empirical to process-motivated forms with differing numbers of free parameters. Provides parameter estimates, uncertainty, and tools for model comparison/selection. Based on Cornwell & Weedon (2013) doi:10.1111/2041-210X.12138.

Install

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

install.packages("litterfitter", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("traitecoevo/litterfitter")

Development version from traitecoevo/litterfitter. Installs pak first if it is not already available.

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-litterfitter

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-litterfitter

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-litterfitter

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: 4.0 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.13

90.7%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 197 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 90%
Return-value docs: 100%
References docs: 17%

Downloads

2.4K

CRAN downloads in the past year

Rank #18,622 · ~7/day · ~200/mo

Releases R versions

Daily download trend is not available in this view yet.

18430 days

59290 days

2.4K1 year

Compare downloads with other packages →

Also on113 r2u3 autocran

Repository

GitHub ↗ traitecoevo/litterfitter

5Stars

2Forks

5Open issues

0Open PRs

2Releases

191Commits

5Contributors

carbondecompositionecology-modellingsoilcarboncycle

191 commits · Last activity 2026-01-29

Stars over time

2019-12-16 · 52026-07-07 · 5

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/traitecoevo/litterfitter on 2026-07-31.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (4)

statsgraphicsgrDevicesmethods

LinkingTo (0)

none

Suggests (5)

testthat knitr roxygen2 devtools rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (3)

Maintainer (1)

Will Cornwell

Author, Maintainer

Authors (2)

Will Cornwell

Author, Maintainer

James Weedon

Author

Contributors (1)

Guofang Liu

Contributor

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
0.1.4Latest
2025-08-21 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.1.3
2023-08-29 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1.2
2022-09-15
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-09-15
Total releases: 3 / 4 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Bundled data: 0.3 KB / 1 file
Download size: 616 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →