Use Case: Map Timeline Event View

Summary

  • Scope: Map View
  • Level: User Goal
  • Actors: User, App
  • Brief: The user sees addition/removal of elements as events using the timeline feature.
  • Assignee: Daniel Steinkogler

Scenarios

  • Precondition: The user has opened the app and selected a map.
  • Main success scenario:
    • The user sees events represented on the scrollbar of the timeline feature, allowing them to understand how the map changed over time. Events include:
      • addition of an element to the map (colored green)
      • removal of an element from the map (colored red)
    • the events are represented by a visual indication directly at the day/month/year on the sliders.
    • if there is no event at a certain point in time, the graph is empty. That means that 0 events should lead to no visual indication, so that 0 and 1 can be easily distinguished.
  • Alternative scenario:
    • The user has not yet added/removed any elements, therefore no events are visible on the timeline.
  • Error scenario: There is an error in the timeline display or event loading functionality. In this case, the app displays an error message and allows the user to try again.
  • Postcondition: The user successfully sees the events on the timeline scrollbar.
  • Non-functional Constraints:
    • Offline availability