Drawing Chinese National and Historical Flags with 'ggplot2' R package ggChinaFlag version 0.4.0 Provides programmatic implementations for drawing Chinese national and historical flags using analytic geometry and 'ggplot2'-based vector graphics. Flag designs are constructed entirely from geometric primitives such as polygons and rectangles, without relying on external image files. The package is intended for educational demonstration, reproducible visualization, and procedural graphics in R. Software Imports: ggplot2, dplyr, showtext, ggforce Suggests: sysfonts Zhaoshuo Liu <liuzhaoshuo1997@outlook.com> Comprehensive R Archive Network (CRAN) Zhaoshuo Liu [aut, cre] (ORCID: <https://orcid.org/0009-0007-3615-5724>) GPL-3 2026-09-14 application/tgz https://CRAN.R-project.org/package=ggChinaFlag doi:10.32614/CRAN.package.ggChinaFlag