The Rtrack package is available from CRAN.
To install:
install.packages("Rtrack")
Pre-release versions can also be installed directly from the github repository if necessary:
remotes::install_github("rupertoverall/Rtrack")
The tutorial requires an example dataset which can be downloaded here.
To download the file and unpack the zip archive from within R:
# Download example dataset into the current directory
download.file("https://rupertoverall.net/Rtrack/example_data.zip", "example_data.zip")
unzip("example_data.zip")
unlink("example_data.zip")