Adding simple inputs to modify a plot

Case Studies: Building Web Applications with Shiny in R

Dean Attali

Shiny Consultant

Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Gapminder plot app

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Text inputs

ui <- fluidPage( 
    textInput(inputId = "package", 
              label = "What's your favourite R package?",
              value = "shiny")
)

server <- function(input, output) {}

shinyApp(ui, server)

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str(input$package)

chr "shiny"

Numeric inputs

numericInput("years", "How many years have you been using R?",
             value = 4, min = 0, max = 25)

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str(input$years)

int 4

Checkbox inputs

checkboxInput("agree", "I agree to the terms and conditions",
              value = TRUE)

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str(input$agree)

logi TRUE

Let's practice!

Case Studies: Building Web Applications with Shiny in R