R Observatory: Metrics for demodelr version 2.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

demodelr

2.0.1Package record

Simulating Differential Equations with Data

0packages depend

4.1Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by John ZobitzCRAN page ↗GitHub ↗Issues ↗

Designed to support the visualization, numerical computation, qualitative analysis, model-data fusion, and stochastic simulation for autonomous systems of differential equations. Euler and Runge-Kutta methods are implemented, along with tools to visualize the two-dimensional phaseplane. Likelihood surfaces and a simple Markov Chain Monte Carlo parameter estimator can be used for model-data fusion of differential equations and empirical models. The Euler-Maruyama method is provided for simulation of stochastic differential equations. The package was originally written for internal use to support teaching by Zobitz, and refined to support the text "Exploring modeling with data and differential equations using R" by John Zobitz (2021) https://jmzobitz.github.io/ModelingWithR/index.html.

Changes in 2.0.1

Patch to fix upcoming release of dplyr which depreciates id(). Flagged in revdep checks and bug in phaseplane code to accomodate u and v as variables.

From NEWS.md in the release

Install

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

install.packages("demodelr", 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("jmzobitz/demodelr")

Development version from jmzobitz/demodelr. 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-demodelr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-demodelr

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-demodelr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

Additional issues

donttest

CRAN check page ↗

Slowest check: 1.7 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-09-09
ERROR12 OK, 1 ERROR2026-09-04
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09

Show 2 earlier changesHide 2 earlier changes

ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.0.1

READMEYes · 133 wordsVignettesNoNEWSYes · 67% structured · mentions 2.0.1Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 15
Examples that run: 75%6 run in a plain check · 2 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

4.1K

CRAN downloads in the past year

Rank #11,746 · ~11/day · ~341/mo

Releases R versions

Daily download trend is not available in this view yet.

35630 days

93190 days

4.1K1 year

Compare downloads with other packages →

Also on113 r2u5 autocran

How downloads are counted

Repository

jmzobitz/demodelr ↗Account: jmzobitz

5Stars

1Forks

1Open issues

0Open PRs

5Releases

195Commits

1Commit identities

195 commits · Last activity 2026-01-16 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 114
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2024-06-19 · 42026-07-29 · 5

How these are measured

PracticesBeta

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

Checks run against github.com/jmzobitz/demodelr on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on macOS

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Installing demodelr adds 39 packages (15 with compiled code, 34 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, patchwork 3.2 MB.

Depends (1)

R >= 4.1.0

Imports (10)

ggplot2 purrr tidyr dplyr formula.tools GGally rlangutilstibble tidyselect

LinkingTo (0)

none

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (1)

John Zobitz

Author, Maintainer since 1.0.0 (2022)

Releases (4)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.0.1Latest
record
2026-01-16 · current release · diff ↗
2.0.0
record
2025-08-23 · diff ↗
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
1.0.1
record
2022-09-16 · diff ↗
1.0.0
record
2022-06-23
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-06-23
Total releases: 4 / 4 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.1.0
Bundled data: 3.9 KB / 7 files
Download size: 27 KB

Appears in task views

Differential Equations

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("demodelr")

Format

Zobitz, J. (2026). demodelr: Simulating Differential Equations with Data (Version 2.0.1) [Computer software]. https://doi.org/10.32614/CRAN.package.demodelr

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 demodelr version 2.0.1 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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