For labs: Click the ‘Rmd file’ link and download to your lab folder. Open RStudio. Switch to your lab project, by clicking button in top right (click create a new project if you did not do this step before). The greeklandings and chinook datasets are in the FishForecast package. Install that package if you have not already:

library(devtools)
devtools::install_github("Fish-Forecast/FishForecast")