Visual enhancements

Case Studies: Building Web Applications with Shiny in R

Dean Attali

Shiny Consultant

Shiny tables

tableOutput("table")

output$table <- renderTable({ gapminder })

chapter3_4_visual_enhancements.003.png

Make better tables with DT

DT::dataTableOutput("table")

output$table <- DT::renderDataTable({ gapminder })

chapter3_4_visual_enhancements.004.png

Make better tables with DT

DT::dataTableOutput("table")

output$table <- DT::renderDataTable({ gapminder })

chapter3_4_visual_enhancements.005.png

Make better tables with DT

DT::dataTableOutput("table")

output$table <- DT::renderDataTable({ gapminder })

chapter3_4_visual_enhancements.006.png

Make better tables with DT

DT::dataTableOutput("table")

output$table <- DT::renderDataTable({ gapminder })

chapter3_4_visual_enhancements.007.png

Make better tables with DT

DT::dataTableOutput("table")

output$table <- DT::renderDataTable({ gapminder })

chapter3_4_visual_enhancements.008.png

Split the UI into tabs

chapter3_4_visual_enhancements.009.png

Split the UI into tabs

chapter3_4_visual_enhancements.010.png

Split the UI into tabs

tabPanel(title = "tab 1", "content goes here")

tabPanel(title = "tab 2", "second tab", plotOutput("plot"))

fluidPage(

  tabsetPanel(

    tabPanel(title = "tab 1", "first tab content goes here"),
    tabPanel(title = "tab 2", "second tab", plotOutput("plot")),
    tabPanel(title = "tab 3", textInput("text", "Name", ""))

  )

)

chapter3_4_visual_enhancements.016.png

CSS: Fine-tune your app's look

Cascading Style Sheets
Markup language to customize look of any element in webpage
- Shiny UI is a webpage
Background color, text color, text size, whitespace, fonts, ...

CSS syntax

CSS rules syntax

#ID {
  property: value;
  property: value;
  ...
}

ID is element ID to apply the style to

To add CSS to Shiny, use tags$style()

ui <- fluidPage(
  tags$style("
    #ID {
      property: value;
    }
  ")
)

CSS example

ui <- fluidPage(
  textInput("name", "Enter your name", "Dean"),
  tableOutput("table")
)

chapter3_4_visual_enhancements.029.png

CSS example

ui <- fluidPage(
  textInput("name", "Enter your name", "Dean"),
  tableOutput("table")
)

chapter3_4_visual_enhancements.030.png

CSS example

ui <- fluidPage(
  textInput("name", "Enter your name", "Dean"),
  tableOutput("table")
)

chapter3_4_visual_enhancements.031.png

CSS example

ui <- fluidPage(
  textInput("name", "Enter your name", "Dean"),
  tableOutput("table")
)

chapter3_4_visual_enhancements.032.png

CSS example

css <- "

  #name {
    color: red;
  }

  #table {
    background: yellow;
    font-size: 24px;
  }

"

ui <- fluidPage(

  tags$style(css),

  textInput("name", "Enter your name", "Dean"),
  tableOutput("table")
)

Let's practice!

Case Studies: Building Web Applications with Shiny in R