4  About

R terminology may differ from that commonly used in mathematics and statistics. For explanations and references to the terms and abbreviations used in this Quarto book, please refer to Chapter 9.

4.1 Environment

This Quarto book is created under R version 4.5.3 (2026-03-11) with the aid of packages knitr (Xie 2025, v1.51; 2015; 2014), quarto (Allaire and Dervieux 2024, v1.5.1 with Quarto v1.9.35) and rmarkdown (Allaire et al. 2025, v2.30; Xie et al. 2018, 2020). Documentation and check are supported by packages roxygen2 (Wickham, Danenberg, et al. 2025, v7.3.3) and devtools (Wickham et al. 2026, v2.5.0). Package(s) sloop (Wickham 2019, v1.0.1) and xfun (Xie 2026, v0.57) are also used in the creation of this book.

An Integrated Development Environment (IDE), e.g., RStudio (Posit Team 2026) or Positron, is not required, but highly recommended.

Listing 4.1: macOS version on author’s computer, in Terminal

sw_vers
# ProductName:      macOS
# ProductVersion:       26.4
# BuildVersion:     25E241

Listing 4.2: macOS version on author’s computer, in R

Sys.info()[c('sysname', 'release', 'machine')]
#  sysname  release  machine 
# "Darwin" "25.4.0"  "arm64"

Listing 4.3: R version on author’s computer

R.version
#                _                           
# platform       aarch64-apple-darwin20      
# arch           aarch64                     
# os             darwin20                    
# system         aarch64, darwin20           
# status                                     
# major          4                           
# minor          5.3                         
# year           2026                        
# month          03                          
# day            11                          
# svn rev        89597                       
# language       R                           
# version.string R version 4.5.3 (2026-03-11)
# nickname       Reassured Reassurer

Readers are strongly advised to download and install the latest version of R, currently R version 4.5.3 (2026-03-11), for macOS (Listing 4.4) or for Windows (Listing 4.5).

Listing 4.4: Download latest version of R for macOS

'https://cran.r-project.org/bin/macosx/' |>
  knitr::include_url(height = '250px')

Listing 4.5: Download latest version of R for Windows

'https://cran.r-project.org/bin/windows/base/' |>
  knitr::include_url(height = '250px')

4.2 Dependency

The BibTeX and/or BibLaTeX entry for LaTeX users is

citation(package = 'ordPanel') |> 
  toBibtex()
@Manual{,
  title = {ordPanel: Ordered Panel},
  author = {Tingting Zhan},
  year = {2026},
  note = {R package version 0.1.1},
  url = {https://github.com/tingtingzhan/ordPanel},
}

The ordPanel package Imports the packages

• cli (Csárdi 2025, v3.6.5), for attractive command line interfaces
• consort (Dayim 2024, v1.2.2), for CONSORT-like flow chart
• flextable (Gohel and Skintzos 2026, v0.9.11), for flexible table
• ggplot2 (Wickham 2016), for visualization
• patchwork (Pedersen 2025) for visualization
• scales (Wickham, Pedersen, et al. 2025, v1.4.0), for colour pallet

Allaire, JJ, and Christophe Dervieux. 2024. quarto: R Interface to Quarto Markdown Publishing System. https://CRAN.R-project.org/package=quarto.

Allaire, JJ, Yihui Xie, Christophe Dervieux, et al. 2025. rmarkdown: Dynamic Documents for R. https://github.com/rstudio/rmarkdown.

Csárdi, Gábor. 2025. cli: Helpers for Developing Command Line Interfaces. https://CRAN.R-project.org/package=cli.

Dayim, Alim. 2024. consort: Create Consort Diagram. https://CRAN.R-project.org/package=consort.

Gohel, David, and Panagiotis Skintzos. 2026. flextable: Functions for Tabular Reporting. https://CRAN.R-project.org/package=flextable.

Pedersen, Thomas Lin. 2025. patchwork: The Composer of Plots. https://CRAN.R-project.org/package=patchwork.

Posit Team. 2026. RStudio: Integrated Development Environment for R. Posit Software, PBC. https://posit.co/.

Wickham, Hadley. 2016. ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag New York. https://ggplot2.tidyverse.org.

Wickham, Hadley. 2019. sloop: Helpers for ’OOP’ in R. https://CRAN.R-project.org/package=sloop.

Wickham, Hadley, Peter Danenberg, Gábor Csárdi, and Manuel Eugster. 2025. roxygen2: In-Line Documentation for R. https://CRAN.R-project.org/package=roxygen2.

Wickham, Hadley, Jim Hester, Winston Chang, and Jennifer Bryan. 2026. devtools: Tools to Make Developing R Packages Easier. https://CRAN.R-project.org/package=devtools.

Wickham, Hadley, Thomas Lin Pedersen, and Dana Seidel. 2025. scales: Scale Functions for Visualization. https://CRAN.R-project.org/package=scales.

Xie, Yihui. 2014. “knitr: A Comprehensive Tool for Reproducible Research in R.” In Implementing Reproducible Computational Research, edited by Victoria Stodden, Friedrich Leisch, and Roger D. Peng. Chapman; Hall/CRC.

Xie, Yihui. 2015. Dynamic Documents with R and knitr. 2nd ed. Chapman; Hall/CRC. https://yihui.org/knitr/.

Xie, Yihui. 2025. knitr: A General-Purpose Package for Dynamic Report Generation in R. https://yihui.org/knitr/.

Xie, Yihui. 2026. xfun: Supporting Functions for Packages Maintained by Yihui Xie. https://CRAN.R-project.org/package=xfun.

Xie, Yihui, J. J. Allaire, and Garrett Grolemund. 2018. R Markdown: The Definitive Guide. Chapman; Hall/CRC. https://bookdown.org/yihui/rmarkdown.

Xie, Yihui, Christophe Dervieux, and Emily Riederer. 2020. R Markdown Cookbook. Chapman; Hall/CRC. https://bookdown.org/yihui/rmarkdown-cookbook.