More input types

Case Studies: Building Web Applications with Shiny in R

Dean Attali

Shiny Consultant

Gapminder plot app

chapter2_3_more_input_types.003.png

Slider inputs

sliderInput("slider", "Choose a number",
            value = 15, min = 5, max = 20)

chapter2_3_more_input_types.004.png

sliderInput("slider2", "Choose a number",
            value = c(10, 15), min = 5, max = 20)

chapter2_3_more_input_types.006_b.png

str(input$slider2)

num [1:2] 10 15

Radio buttons

radioButtons("radio", "Choose your favorite time of day",
             choices = c("Morning", "Afternoon", "Evening"),
             selected = "Afternoon")

chapter2_3_more_input_types.009.png

Select inputs (dropdowns)

selectInput("select", "Choose your favorite time of day",
            choices = c("Morning", "Afternoon", "Evening"),
            selected = "Afternoon")

chapter2_3_more_input_types.013.png

Select inputs (dropdowns)

selectInput("select", "Choose your favorite time of day",
            choices = c("Morning", "Afternoon", "Evening"),
            selected = "Afternoon")

chapter2_3_more_input_types.014.png

Select inputs (dropdowns)

selectInput("select", "Choose your favorite time of day",
            choices = c("Morning", "Afternoon", "Evening"),
            selected = "Afternoon")

chapter2_3_more_input_types.015.png

Select inputs (dropdowns)

Allow multiple selections

selectInput("select", "Choose your favorite time of day",
            choices = c("Morning", "Afternoon", "Evening"),
            selected = c("Afternoon", "Evening"),
            multiple = TRUE)

chapter2_3_more_input_types.016.png

Radio buttons vs select inputs

Radio buttons
- Few options
- All options are visible
- Exactly one option selected
Select inputs
- Few or many options
- Harder to see all options
- Multiple options can be selected

chapter2_3_more_input_types.018.png

Let's practice!

Case Studies: Building Web Applications with Shiny in R