Shiny Input Widgets

Shiny Outputs

Shiny has many different input options:

• actionButton() - creates a clickable button
• checkboxInput() and checkboxGroupInput()
• dateInput() - calendar to select a date
• dateRangeInput() - select a range of dates
• fileInput() - upload a file
• numericInput() - input a numeric value
• radioButtons() - select one or more items
• sliderInput() - slide along a range of values
• textInput() - input a string

Shiny also has many output options:

• renderDataTable() - outputs an interactive, sortable data table
• htmlOutput() - output html elements
• renderPlot() - output an R plot
• renderPrint() - output text from print() in R
• renderTable() - output an HTML table
• renderText() - output text from R
• renderUI() - output a custom part of the user interface
• renderImage() - print an image to the page

• tabsetPanel() - make multiple different output views (i.e. a plot in one tab, a data table in another)
• helpText() - create additional text to help users navigate your applet
• submitButton() - only update outputs when this button is clicked
• conditionalPanel() - only show certain UI options when conditions are met (i.e. if a certain tab is open, or a certain input is selected)

Using any sports dataset provided or your own, create a simple Shiny app. Use the skeleton files ui.R and server.R as a starting point.

• Ideas:
  • Plot some aspect of the data with color based on another aspect of the data
  • Use subset() and checkboxInput() to plot user-selected subsets
• Challenges:
  • Use tabsetPanel() to display different summaries or plots
  • Allow multiple input variables
  • Use if statements to output different plot types and let the user choose which plot type to output

For more ideas refer to:

• https://labs.omnianalytics.io/

• https://shiny.rstudio.com/gallery/