Layout a sidebar and main area — sidebarLayout
R/bootstrap-layout.R
  Description
Create a layout (sidebarLayout()) with a sidebar (sidebarPanel()) and
main area (mainPanel()). The sidebar is displayed with a distinct
background color and typically contains input controls. The main
area occupies 2/3 of the horizontal width and typically contains outputs.
Arguments
- sidebarPanel
- The - sidebarPanel()containing input controls.
- mainPanel
- The - mainPanel()containing outputs.
- position
- The position of the sidebar relative to the main area ("left" or "right"). 
- fluid
- TRUEto use fluid layout;- FALSEto use fixed layout.
- ...
- Output elements to include in the sidebar/main panel. 
- width
- The width of the sidebar and main panel. By default, the sidebar takes up 1/3 of the width, and the main panel 2/3. The total width must be 12 or less. 
See also
Other layout functions: 
fillPage(),
fixedPage(),
flowLayout(),
fluidPage(),
navbarPage(),
splitLayout(),
verticalLayout()
Examples
## Only run examples in interactive R sessions
if (interactive()) {
options(device.ask.default = FALSE)
# Define UI
ui <- fluidPage(
  # Application title
  titlePanel("Hello Shiny!"),
  sidebarLayout(
    # Sidebar with a slider input
    sidebarPanel(
      sliderInput("obs",
                  "Number of observations:",
                  min = 0,
                  max = 1000,
                  value = 500)
    ),
    # Show a plot of the generated distribution
    mainPanel(
      plotOutput("distPlot")
    )
  )
)
# Server logic
server <- function(input, output) {
  output$distPlot <- renderPlot({
    hist(rnorm(input$obs))
  })
}
# Complete app with UI and server components
shinyApp(ui, server)
}