闪亮:在弹出窗口中绘制结果

Question

我正在尝试构建一个有光泽的Web应用程序,我想在弹出窗口而不是在mainPanel中显示R函数的结果图.例如,对于以下示例(来自http://shiny.rstudio.com/articles/action-buttons.html),单击"开始"按钮将在弹出窗口中显示相同的图.

我试着添加一些javascript,但我还没有成功......有人可以帮忙吗？

先感谢您 !

library(shiny)
ui <- fluidPage(
    actionButton("go", "Go"),
    numericInput("n", "n", 50),
 plotOutput("plot")
)
server <- function(input, output) {
  randomVals <- eventReactive(input$go, {
  runif(input$n)
  })
  output$plot <- renderPlot({
   hist(randomVals())
 })
}
shinyApp(ui, server)

Answer 1

查看shinyBS提供modal弹出窗口的包.下面的示例显示了按钮单击时的图表.

编辑 - 为模态添加了一个下载按钮

rm(list = ls())
library(shiny)
library(shinyBS)

shinyApp(
  ui =
    fluidPage(
      sidebarLayout(
        sidebarPanel(numericInput("n", "n", 50),actionButton("go", "Go")),
        mainPanel(
          bsModal("modalExample", "Your plot", "go", size = "large",plotOutput("plot"),downloadButton('downloadPlot', 'Download'))
        )
      )
    ),
  server =
    function(input, output, session) {

      randomVals <- eventReactive(input$go, {
        runif(input$n)
      })

      plotInput <- function(){hist(randomVals())}

      output$plot <- renderPlot({
        hist(randomVals())
      })

      output$downloadPlot <- downloadHandler(
        filename = "Shinyplot.png",
        content = function(file) {
          png(file)
          plotInput()
          dev.off()
        }) 

    }
)

Answer 2

使用原生 Shiny 功能

library(shiny)

ui <- fluidPage(
  actionButton("go", "Go"),
  numericInput("n", "n", 50)
)

server <- function(input, output) {
  randomVals <- eventReactive(input$go, {
    runif(input$n)
  })
  
  output$plot <- renderPlot({
    hist(randomVals())
  })
  
  observeEvent(input$go, {
    showModal(modalDialog(
      plotOutput("plot"),
      footer = NULL,
      easyClose = TRUE
    ))
  })
}

shinyApp(ui, server)