sdbuildR

2.2.2

An Accessible Interface for Stock-and-Flow Modelling

0packages depend

4.3Kdownloads / year

78.0%test coverage

13/13checks pass

Overview

About

Maintained by Kyra Caitlin EversFirst published 2025-10-295 releasesCRAN page ↗GitHub ↗

Stock-and-flow models are a computational method from the field of system dynamics. They represent how systems change over time and are mathematically equivalent to ordinary differential equations. 'sdbuildR' (system dynamics builder) provides an intuitive interface for constructing stock-and-flow models without requiring extensive domain knowledge. Models can quickly be simulated and revised, supporting iterative development. 'sdbuildR' simulates models in 'R' and 'Julia', and supports computationally intensive ensemble simulations. Additionally, 'sdbuildR' can import models created in 'Insight Maker' (https://insightmaker.com/).

Install

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

install.packages("sdbuildR", 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("KCEvers/sdbuildR")

Development version from KCEvers/sdbuildR. 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-sdbuildr

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-sdbuildR

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-sdbuildR

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

Health

CRAN checks

13OK

Slowest check: 13.0 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 1.26

78.0%

Coverage · measured lines

98%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 434 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 98%
Documented parameters: 99%
Return-value docs: 98%
References docs: 0%

Downloads

4.3K

CRAN downloads in the past year

Rank #8,407 · ~12/day · ~358/mo

Releases R versions

Daily download trend is not available in this view yet.

26430 days

1.3K90 days

4.3K1 year

Compare downloads with other packages →

Also on63 r2u36 autocran

Repository

GitHub ↗ kcevers/sdbuildr

5Stars

1Forks

0Open issues

0Open PRs

7Releases

255Commits

1Contributors

License GPL-3.0 · 255 commits · Last activity 2026-07-17 · +25% stars, 30d

Stars over time

2025-07-20 · 22026-07-07 · 5

Repository practices

Upstream repositoryBeta

8 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/kcevers/sdbuildr on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (3)

cran-comments.mdrevdep/CRAN-SUBMISSION

Docs source (1)

README.Rmd

Show all practices

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

30 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.2.0

Imports (21)

cli data.table deSolve DiagrammeR future future.apply htmltools htmlwidgets igraph jsonlite JuliaConnectoR plotly progressr rlang stringi stringr textutilstoolsutilswithr xml2

LinkingTo (0)

none

Suggests (11)

callr gt DiagrammeRsvg kableExtra knitr qgraph rsvg testthat this.path webshot2 bslib

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Kyra Caitlin Evers

Author, Maintainer, Copyright holder

Authors (1)

Kyra Caitlin Evers

Author, Maintainer, Copyright holder

Contributors (1)

STIX Fonts Project Authors

Contributor, Copyright holder · added in 2.2.2

Kyra Caitlin Evers

Author, Maintainer, Copyright holder

STIX Fonts Project Authors

Contributor, Copyright holder · added in 2.2.2

Package Timeline

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

2.2.2Latest
2026-07-17 · current release · diff ↗
2.0.0
2026-06-16 · diff ↗
R
R 4.6.0 released · 2026-04-24
1.0.8
2025-11-19 · diff ↗
1.0.7
2025-11-03 · diff ↗
1.0.5
2025-10-29
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-10-29
Total releases: 5 / 1 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.2.0
Download size: 223 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →