R Observatory: Metrics for tacmagic version 0.3.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

tacmagic

0.3.1Package record

Positron Emission Tomography Time-Activity Curve Analysis

0packages depend

2.6Kdownloads / year

82.2%test coverage

11/13flavors OK

Overview

About

Maintained by Eric BrownCRAN page ↗GitHub ↗Issues ↗rOpenSci review: issue 280 ↗

To facilitate the analysis of positron emission tomography (PET) time activity curve (TAC) data, and to encourage open science and replicability, this package supports data loading and analysis of multiple TAC file formats. Functions are available to analyze loaded TAC data for individual participants or in batches. Major functionality includes weighted TAC merging by region of interest (ROI), calculating models including standardized uptake value ratio (SUVR) and distribution volume ratio (DVR, Logan et al. 1996 doi:10.1097/00004647-199609000-00008), basic plotting functions and calculation of cut-off values (Aizenstein et al. 2008 doi:10.1001/archneur.65.11.1509). Please see the walkthrough vignette for a detailed overview of 'tacmagic' functions.

Changes in 0.3.1

Minor changes

Make vdiffr plotting tests conditional.

From NEWS.md in the release

Install

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

install.packages("tacmagic", 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("ropensci/tacmagic")

Development version from ropensci/tacmagic. 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-tacmagic

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-tacmagic

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-tacmagic

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

2NOTE11OK

Check messages

NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Maintainer: ‘Eric Brown <eb@ericebrown.com>’

The BugReports field in DESCRIPTION has
  https://github.com/ropensci/tacmagic
which should likely be
  https://github.com/ropensci/tacmagic/issues
instead.

CRAN check page ↗

Slowest check: 1.6 min · r-oldrel-windows-x86_64

Status changes

NOTE11 OK, 2 NOTENow
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.1

README· In the repository, left out of the releaseVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.3.1Citation fileNo

Help pages: 28includes a package overview page
Examples that run: 100%22 run in a plain check
Exported functions with examples: 88%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 32%

Vignettes (1)

Analysis with tacmagic

How these are measured

Downloads

2.6K

CRAN downloads in the past year

Rank #18,180 · ~7/day · ~215/mo

Releases R versions

Daily download trend is not available in this view yet.

25530 days

71290 days

2.6K1 year

Compare downloads with other packages →

Also on69 r2u4 autocran

How downloads are counted

Repository

ropensci/tacmagic ↗Organization: ropensci

6Stars

1Forks

0Open issues

1Open PRs

5Releases

270Commits

3Commit identities

positron-emission-tomographypetpet-mrneuroimagingrstatisticspositronmri

License file reads as GPL-3.0 · 270 commits · Last activity 2020-02-05 · The default branch showed an older version (0.3.0) than CRAN on 2026-10-22

Responsiveness

How these are sampled

PRs merged (all time): 93%
Median days to close, 50 most recently updated closed issues: 16
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-05-24 · 62026-07-07 · 6

How these are measured

PracticesBeta

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

Checks run against github.com/ropensci/tacmagic on 2026-10-22.

Continuous integration (1)

Travis CI (config file)

Governance and community (2)

Code of conduct (inherited from ropensci)Contributing guide

Docs source (1)

GitHub Pages site last deployed 2019-12-04

Coverage (1)

Coverage reporting (Codecov)

Show all practicesHide 2 practices

CRAN release process (1)

cran-comments.md

Research and citation (2)

codemeta.jsonJOSS paper

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

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Installing tacmagic adds 5 packages (0 with compiled code, 1.2 MB of source tarballs). Heaviest: pracma 389 KB, R.oo 375 KB, R.utils 359 KB.

Depends (1)

R >= 3.4

Imports (5)

graphicsgrDevicespracmautilsR.matlab

LinkingTo (0)

none

Suggests (5)

testthat knitr rmarkdown covr vdiffr

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 (4)

Eric Brown

Author, Maintainer since 0.2.1 (2019)

Jon Clayden

Reviewer

Jon Clayden reviewed the package for ropensci, see <https://github.com/ropensci/software-review/issues/280>

Brandon Hurr

Reviewer

Brandon Hurr reviewed the package for ropensci, see <https://github.com/ropensci/software-review/issues/280>

Ariel Graff-Guerrero

dgs

Releases (3)

Pick two releases to compare their code metrics.

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
0.3.1Latest
record
2020-12-09 · current release · diff ↗ ·
added 1 export
roi_AAL_full
R
R 4.0.0 released · 2020-04-24
0.3.0
record
2019-06-07 · diff ↗ ·
added 3 exports
change_units, suv, tac_suv
R
R 3.6.0 released · 2019-04-26
0.2.1
record
2019-03-06
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-03-06
Total releases: 3 / 7 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.4
Bundled data: 1.8 KB / 1 file
Download size: 572 KB

Appears in task views

Medical Image Analysis

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("tacmagic")

Format

Brown, E., Clayden, J., Graff-Guerrero, A., & Hurr, B. (2020). tacmagic: Positron Emission Tomography Time-Activity Curve Analysis (Version 0.3.1) [Computer software]. https://doi.org/10.32614/CRAN.package.tacmagic

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 tacmagic version 0.3.1 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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