Learning R for Data Visualization (Video 27)

This video tutorial guides viewers through creating a simple Shiny website. It covers the basic structure of Shiny, including UI and server components, and demonstrates how to add elements like titles and dropdown menus. The tutorial also explains how to use server scripts to render plots based on user input, culminating in a functional website previewed in R Studio.

What are the two main components of a Shiny application?

• Database and API

• JavaScript and PHP

• HTML and CSS

• UI and Server

Which function is used to add explanatory text in the sidebar panel?

• helpText()

• addText()

• infoText()

• sidebarText()

What is the purpose of the 'input ID' in a dropdown menu?

• To display the menu title

• To identify the input on the server side

• To style the dropdown

• To set the default option

Which function is used to render plots in the server script?

• plotOutput()

• renderPlot()

• createPlot()

• displayPlot()

What happens when 'None' is selected in the dropdown menu?

• A default plot is shown

• An error message is displayed

• Nothing is plotted

• The application crashes