Visualize Simon's Two-Stage Design R package VisualizeSimon2Stage version 0.2.2 To visualize the probabilities of early termination, fail and success of Simon's two-stage design. To evaluate and visualize the operating characteristics of Simon's two-stage design. Software Depends: R (>= 4.4.0) Imports: methods, flextable, ggplot2, officer, geomtextpath, scales Suggests: clinfun, knitr, quarto, rmarkdown Tingting Zhan <tingtingzhan@gmail.com> Comprehensive R Archive Network (CRAN) Tingting Zhan [aut, cre] (ORCID: <https://orcid.org/0000-0001-9971-4844>) GPL-2 2025-04-28 application/tgz https://CRAN.R-project.org/package=VisualizeSimon2Stage doi:10.32614/CRAN.package.VisualizeSimon2Stage en-US