Notifications

The ability to create notifications is part of a larger amount of functionality within shinydashboard, which allows you to create messages, tasks, and notifications in the header of your dashboard. For more details, visit rstudio.github.io/shinydashboard/structure.html.

In this example, we will just add notifications. The code is very similar to the other two types of content. On the server.R side, the code is as follows:

output$notifications <- renderMenu({

This line allows the notification content to be rendered dynamically and called in the ui.R file with dropdownMenuOutput("notifications"). We have the following code:

  users <- sum(gadf[gadf$date == max(gadf$date), "users"])
  newusers <- sum(gadf[gadf$date == max(gadf$date), "newUsers"]) /
  sum(gadf[gadf$date == max(gadf$date), "users"])
  * 100

These lines calculate the two values that we want— the number of users in the time period and the percentage of new users. We have the following code:

  newusers <- round...