By clicking on the “R transformation” a new windows will show up. This windows is a R editor that you can past your code here. however there are couple of things that you should consider.
1. there is a error message handling but always recommended to run and be sure your code work in R studio first (in our example we already tested it in Part 1).
2. the all data is holding in variable “dataset”.
3. you do not need to write “install.packages” to get packages here, but you should first install required packages into your R editor and here just call “library(package name)”
Leila takes this step-by-step, leading to a Power BI visual with drill-down.