Statistical Process Control with Tidyverse-Native Workflows R package shewhartr version 1.3.0 A comprehensive toolkit for Statistical Process Control (SPC) that combines the rigor of classical Shewhart methodology with modern tidyverse-native interfaces. Provides classical control charts for variables (I-MR, Xbar-R, Xbar-S) and attributes (p, np, c, u), as well as regression-based control charts for processes with trend. Includes Nelson runs tests, Average Run Length (ARL) simulation, process capability indices with bootstrap confidence intervals, Box-Cox transformation guidance, and a clean Phase I / Phase II workflow. All chart objects integrate with broom via 'tidy', 'glance' and 'augment' methods. References: Shewhart (1931, ISBN:0-87389-076-0); Montgomery (2019, ISBN:978-1-119-39930-8); Nelson (1984) <doi:10.1080/00224065.1984.11978921>; Woodall (2000) <doi:10.1080/00224065.2000.11980013>; Box & Cox (1964) <doi:10.1111/j.2517-6161.1964.tb00553.x>. Software Depends: R (>= 4.1.0) Imports: rlang (>= 1.1.0), cli (>= 3.6.0), dplyr (>= 1.1.0), purrr (>= 1.0.0), tibble (>= 3.2.0), tidyselect (>= 1.2.0), ggplot2 (>= 3.5.0), broom (>= 1.0.0), slider (>= 0.3.0), grid, grDevices, stats, utils Suggests: patchwork (>= 1.1.0), plotly (>= 4.10.0), qcc (>= 2.7), lubridate (>= 1.9.0), testthat (>= 3.2.0), vdiffr (>= 1.0.0), knitr, rmarkdown, pkgdown, MASS André Leite <leite@castlab.org> Comprehensive R Archive Network (CRAN) André Leite [aut, cre], Hugo Vasconcelos [aut], Raydonal Ospina [aut], Cristiano Ferraz [aut], Castlab [cph, fnd] GPL-3 2026-05-13 application/tgz https://CRAN.R-project.org/package=shewhartr doi:10.32614/CRAN.package.shewhartr