I've been playing around for a bit with r shiny for the last couple of days. I think it is important to understand some concept relating to r shiny. First of all, it is important to understand that an r shiny application is divided into three files: · app.r will be used to launch the application · server.r will be used to define the application logic · ui.r would be used to program the user interface of the application I will give more details about these 3 files later. It's also helpful to understand that this this library allowed to create interactive app and not just dashboard. As I previously said our shiny application is divided into 3 files. Programming task is mainly divided between ui and server. What is the use of ui.r. Basically it can be divid...