ggchord: Multi-Sequence Alignment Chord Diagram Visualization Tool

A 'ggplot2'-based R package that visualizes multi-sequence alignment results as chord diagrams using layered grammar of graphics. Users build chord plots by stacking geom layers (geom_seq, geom_ribbon, geom_gene, geom_axis). Layout parameters are specified within each geom layer, following 'ggplot2' conventions. Homologous regions between query and subject sequences are intuitively displayed.

Version: 0.8.0
Depends: R (≥ 4.1.0)
Imports: ggplot2 (≥ 4.0.0), grDevices, grid
Suggests: knitr, rmarkdown, qpdf, dplyr, plotly, testthat (≥ 3.0.0)
Published: 2026-08-24
DOI: 10.32614/CRAN.package.ggchord
Author: Jem Dang [aut, cre]
Maintainer: Jem Dang <dangjem0730 at gmail.com>
BugReports: https://github.com/DangJem/ggchord/issues
License: MIT + file LICENSE
URL: https://github.com/DangJem/ggchord, https://dangjem.github.io/ggchord/
NeedsCompilation: no
Materials: NEWS
CRAN checks: ggchord results

Documentation:

Reference manual: ggchord.html , ggchord.pdf
Vignettes: ggchord 汉语使用指南 (source, R code)
ggchord tutorial (source, R code)

Downloads:

Package source: ggchord_0.8.0.tar.gz
Windows binaries: r-devel: ggchord_0.8.0.zip, r-release: ggchord_0.2.0.zip, r-oldrel: ggchord_0.2.0.zip
macOS binaries: r-release (arm64): ggchord_0.8.0.tgz, r-oldrel (arm64): ggchord_0.8.0.tgz, r-release (x86_64): ggchord_0.8.0.tgz, r-oldrel (x86_64): ggchord_0.8.0.tgz
Old sources: ggchord archive

Linking:

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