1  Introduction

1.1 Prerequisites

Following software need to be installed on your computer to work with the examples shown in this online book:

• R Version 4.1 (or higher) https://cloud.r-project.org/. Check your R version by running following command in your console:

  R.Version()$version.string

  #> [1] "R version 4.2.0 (2022-04-22 ucrt)"

• RStudio Version 2022.02 or higher https://www.rstudio.com/products/rstudio/download/#download. Check your RStudio version by either looking clicking About RStudio under the menu Help, or by running following command in your console

  rstudioapi::versionInfo()$version

Following software are only needed for specific chapters/examples:

• Git https://git-scm.com/downloads
• For Windows: Rtools <https://cran.r-project.org/bin/windows/Rtools/

1.2 Frequently used R packages

See also @ref(Installing R packages)

Following R packages will be often used in the given examples and it is thus recommended to install them before starting with this book

• here
• tidyverse(installs ggplot2, dplyr, tidyr, tibble, readr, forcats, stringr, purrr)
• readxl
• remotes

Run this in your R command line to install these packages:

pkg_list <- c("here", "tidyverse", "readxl", "remotes")
install.packages(pkg_list)