After installation, please read the help page:
help("fritools2-package", package = "fritools2")
#> Utilities for the Forest Research Institute of the State
#> Baden-Wuerttemberg
#>
#> Description:
#>
#> Miscellaneous utilities, tools and helper functions.
#>
#> Details:
#>
#> You will find the details in
#> 'vignette("An_Introduction_to_fritools", package = "fritools2")'.
You can install fritools2 from gitlab via:
if (! require("remotes")) install.packages("remotes")
::install_gitlab("fvafrcu/fritools2") remotes