R Observatory: Metrics for LFApp version 1.4.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

LFApp

1.4.2Package record

Shiny Apps for Lateral Flow Assays

0packages depend

3Kdownloads / year

–test coverage

12/13flavors OK

Overview

About

Maintained by Filip PaskaliCRAN page ↗GitHub ↗Issues ↗

Shiny apps for the quantitative analysis of images from lateral flow assays (LFAs). The images are segmented and background corrected and color intensities are extracted. The apps can be used to import and export intensity data and to calibrate LFAs by means of linear, loess, or gam models. The calibration models can further be saved and applied to intensity data from new images for determining concentrations.

Install

R (CRAN)pak (dev)Ubuntu (r2u)

install.packages("LFApp", 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("fpaskali/LFApp")

Development version from fpaskali/LFApp. 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-lfapp

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

Health

CRAN checks

1ERROR12OK

Check messages

ERRORpackage dependenciesr-oldrel-macos-arm64

Package required but not available: ‘EBImage’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.

CRAN check page ↗

Slowest check: 3.3 min · r-oldrel-windows-x86_64

Status changes

ERROR12 OK, 1 ERROR2026-05-06
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

Documentation signals are not tracked yet for this package.

Vignettes (1)

LFA App User's Guide

How these are measured

Downloads

3K

CRAN downloads in the past year

Rank #12,784 · ~8/day · ~249/mo

LFApp Releases R versions

Daily download trend is not available in this view yet.

33530 days

87490 days

3K1 year

Compare downloads with other packages →

Also on83 r2u

How downloads are counted

Repository

fpaskali/lfapp ↗Account: fpaskali

4Stars

4Forks

0Open issues

0Open PRs

0Releases

196Commits

6Commit identities

rshinyr-packagerstatsimage-processingcalibrationbioinformaticsbiomedical-image-processing

196 commits · Last activity 2026-07-03 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 6
Median days to close, 50 most recently updated closed PRs: 0

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/fpaskali/lfapp on 2026-10-11.

Governance and community (1)

Code of conduct

Docs source (1)

GitHub Pages site last deployed 2026-07-03

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Installing LFApp adds 64 packages (31 with compiled code, 53 MB of source tarballs). Heaviest: ggplot2 6.0 MB, bslib 5.6 MB, gplots 4.6 MB. 1 more not on CRAN is not measured.

Depends (1)

R >= 4.0.0

Imports (14)

statsutilsgraphicsmethodsmgcvshiny shinyjs shinythemes shinyFiles shinyMobile EBImage DT ggplot2 fs

LinkingTo (0)

none

Suggests (3)

knitr rmarkdown remotes

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (3)

Filip Paskali

Author, Maintainer since 1.3 (2021)

Matthias Kohl

Author

Weronika Schary

Author

Releases (5)

1.4.2Latest
record
2026-05-05 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.4.1
record
2024-05-27 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.4
record
2023-11-06 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.3.1
record
2022-11-23 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.3
record
2021-07-28
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2021-07-28
Total releases: 5 / 5 yrs
License: LGPL-3 OSI
Download size: 3.0 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("LFApp")

Format

Paskali, F., Kohl, M., & Schary, W. (2026). LFApp: Shiny Apps for Lateral Flow Assays (Version 1.4.2) [Computer software]. https://doi.org/10.32614/CRAN.package.LFApp

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 LFApp version 1.4.2 [Data set]. HJJB, LLC. Data release v2026-10-19. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-19, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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