有光泽的活动板

Question

在下面的代码中，是否可以将bins放在可移动的面板中，比如颜色更改面板。

折叠图像显示一个面板是可移动的，而另一个是不可移动的。

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library(shiny)




# Define UI for application that draws a histogram
ui <- fluidPage(
  shiny::tags$head(
    shinythemes::themeSelector()

  ),#taghead
  # Application title
  titlePanel("Old Faithful Geyser Data"),

  # Sidebar with a slider input for number of bins
  sidebarLayout(
    sidebarPanel(
      sliderInput("bins",
                  "Number of bins:",
                  min = 1,
                  max = 50,
                  value = 30)
    ),

    # Show a plot of the generated distribution
    mainPanel(
      plotOutput("distPlot")
    )
  )
)

# Define server logic required to draw a histogram
server <- function(input, output) {

  output$distPlot <- renderPlot({
    # generate bins based on input$bins from ui.R
    x    <- faithful[, 2]
    bins <- seq(min(x), max(x), length.out = input$bins + 1)

    # draw the histogram with the specified number of bins
    hist(x, breaks = bins, col = 'darkgray', border = 'white')
  })
}

# Run the application
shinyApp(ui = ui, server = server)

如何制作可移动面板？请让我知道。

**Answer: The following code makes a draggable panel** 




library(shiny)

# Define UI for application that draws a histogram
ui <- fluidPage(
  shiny::tags$head(
    shinythemes::themeSelector()

  ),#taghead
  # Application title
  titlePanel("Old Faithful Geyser Data"),

  # Sidebar with a slider input for number of bins



    # Show a plot of the generated distribution
    mainPanel(

      absolutePanel(
        sliderInput("bins",
                    "Number of bins:",
                    min = 1,
                    max = 50,
                    value = 30),
        draggable = T
      ),
      plotOutput("distPlot")
    )

)

# Define server logic required to draw a histogram
server <- function(input, output) {

  output$distPlot <- renderPlot({
    # generate bins based on input$bins from ui.R
    x    <- faithful[, 2]
    bins <- seq(min(x), max(x), length.out = input$bins + 1)

    # draw the histogram with the specified number of bins
    hist(x, breaks = bins, col = 'darkgray', border = 'white')
  })
}

# Run the application
shinyApp(ui = ui, server = server)

Answer 1

可移动面板可以用absolutePanel实现。