sidebarLayout: Layout a sidebar and main area
In sheikhbarabas/shiny: Web Application Framework for R

Create a layout with a sidebar and main area. 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.

1 2	sidebarLayout(sidebarPanel, mainPanel, position = c("left", "right"), fluid = TRUE)

`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`	`TRUE` to use fluid layout; `FALSE` to use fixed layout.

## Only run examples in interactive R sessions
if (interactive()) {

# 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)
}