How to code an interactive shiny app to search Twitter: Do More With R bonus video

This video tutorial guides viewers through creating an interactive Shiny web app to track tweets by hashtag. It covers setting up the app in RStudio, adding functionality for searching tweets, and enhancing user interaction with input fields and tables. The tutorial also discusses finalizing the app with additional features like action buttons to manage API calls efficiently.

What is the primary purpose of the Shiny web app discussed in the video?

• To track tweets by a hashtag

• To develop a mobile application

• To analyze financial data

• To create a static website

In RStudio, what are the two main components of a Shiny app?

• Frontend and Backend

• Server and Database

• UI and Server

• UI and Database

Which library is used for data manipulation in the Shiny app?

• ggplot2

• dplyr

• shiny

• tidyr

What type of input is used for entering the hashtag in the Shiny app?

• Checkbox

• Radio button

• Text box

• Dropdown menu

How is a reactive object different from a conventional R object?

• It is stored in a database

• It is faster to compute

• It changes based on user input

• It does not change based on user input

What function is used to ensure a reactive value exists before calculations?

• validate()

• require()

• check()

• assert()

What is the main advantage of using reactive objects in Shiny apps?

• They are easier to code

• They are more secure

• They automatically update based on user input

• They require less memory

What is the purpose of the action button in the Shiny app?

• To automatically refresh the page

• To submit a form

• To close the application

• To control when data is requested from the API

What is the recommended way to handle user inputs that trigger data requests?

• Using a text input

• Using a dropdown menu

• Using an action button

• Using a slider

What is a potential refinement mentioned for the Shiny app?

• Implementing a login system

• Adding a color theme

• Including a download button

• Integrating a chat feature