閃亮不響應多個tabsetpanels

Question

我試圖在Shiny應用程序的mainPanel中包含多個tabsetPanel。當我啓動應用程序時，它沒有顯示任何東西，就好像應用程序試圖找出UI元素而根本沒有進入服務器元素。

任何人都知道爲什麼會出現這種情況？

以下是基於RStudio中Shiny應用程序模板的最小示例。

ui.R

library(shiny) 

# Define UI for application that draws a histogram 
shinyUI(fluidPage(

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

    # Multiple tabset panels 
    mainPanel(
     h2("tabsetpanel1"), 
     tabsetPanel(id = "pan1", 
        type = "tabs", 
        tabPanel("tab1", plotOutput("distPlot"))), 
     h2("tabsetpanel2"), 
     tabsetPanel(id = "pan2", 
        type = "tabs", 
        tabPanel("tab2", plotOutput("distPlot"))) 
    ) 
) 
)) 

server.R

library(shiny) 

# Define server logic required to draw a histogram 
shinyServer(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') 

    }) 

}) 

Answer 1

你的輸出必須是唯一的，你不能有多個"distPlot"，更改爲這樣的事情：

data <- reactive({ 
    # 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') 
}) 

    output$distPlot1 <- renderPlot({ 
    data() 
    }) 

    output$distPlot2 <- renderPlot({ 
    data() 
    }) 

然後在你的ui

plotOutput("distPlot1") 

plotOutput("distPlot2")