将 instagram/youtube 嵌入 Shiny R 应用

Question

我想在点击图表后播放 instagram 或 Youtube 视频（例如显示异常值等）

到目前为止，明确告诉 Shiny 视频是什么是有效的：

require(shiny)
require(ggplot2)

# data
df <- data.frame(ID=c(1,2),x=c(33,7),y=c(50,16),name=c("Vid1","Vid2"),link=c("https://www.youtube.com/embed/Gyrfsrd4zK0","https://anotherlink.com"), stringsAsFactors=FALSE)

# video is explicitly embedded with the youtube link (i.e. not dynamic)
ui <- basicPage(
  plotOutput("plot", click = "plot_click"),
  verbatimTextOutput("selection"),
  conditionalPanel("plot_click!=null",
                   h4(textOutput("nametext")),
                   HTML('<iframe width="200" height="100" src="https://www.youtube.com/embed/Gyrfsrd4zK0" frameborder="0" allowfullscreen></iframe>'))
)

server <- function(input, output,session) {

  output$plot <- renderPlot({
    ggplot(data=df,aes(x=x,y=y))+
      geom_point()+
      scale_x_continuous(limits = c(0, 68))+
      scale_y_continuous(limits = c(0, 52.5))
  })

  output$selection <- renderPrint({
    nearPoints(df, input$plot_click)
  })

  info <- reactive({

    t <- as.data.frame(nearPoints(df, input$plot_click))
    s <- t[1,4]
    u <- t[1,5]
    list(s=s,u=u)

  })

  output$nametext <- renderText({if(!is.na(info()$s)){info()$s}})
  output$urltext <- renderText({if(!is.na(info()$u)){info()$u}})
}

runApp(shinyApp(ui, server), launch.browser = TRUE)

我希望视频只在点击时出现（并且在不同点上有所不同）但是我不知道如何更改条件面板以适应这种情况。我尝试在服务器内部使用 renderImage，还有这个 GoogleGroups answer 但没有任何乐趣。

Answer 1

在服务器端你可以使用：

 library(memisc) 
 output$video <- renderUI({
    click <- input$plot_click
    if(!is.null(click)){
      link = cases(
        "Gyrfsrd4zK0" = click$x > 40,
        "b518URWajNQ" = click$x > 20,
        "I5Z9WtTBZ_w "= click$x > 0
      )
      HTML(paste0('<iframe width="200" height="100" src="https://www.youtube.com/embed/', link ,'" frameborder="0" allowfullscreen></iframe>'))
    }
  })

ui 一侧：

uiOutput("video")

Answer 2

这是 Instagram 的替代品，在 iframe 中：

请原谅剪辑！

# make some data

df <- data.frame(ID=c(1,2),x=c(33,7),y=c(50,16),name=c("Vid1","Vid2"),link=c("https://www.instagram.com/p/BTke9pwjEvu","AnotherWeblink"), stringsAsFactors=FALSE)

# remove original instagram link
df$link <- gsub("https://www.instagram.com/p/","",df$link)

ui <- basicPage(
  plotOutput("plot", click = "plot_click"),
  verbatimTextOutput("selection"),
  conditionalPanel("plot_click!=null",
                   h4(textOutput("nametext")),
                   uiOutput("frame"))
)

server <- function(input, output,session) {

  output$plot <- renderPlot({
    ggplot(data=df,aes(x=x,y=y))+
      geom_point()+
      scale_x_continuous(limits = c(0, 68))+
      scale_y_continuous(limits = c(0, 52.5))
  })

  output$selection <- renderPrint({
    nearPoints(df, input$plot_click)
  })

  info <- reactive({

    t <- as.data.frame(nearPoints(df, input$plot_click))
    s <- t[1,4]
    u <- t[1,5]
    list(s=s,u=u)

  })

  output$nametext <- renderText({if(!is.na(info()$s)){info()$s}})

  output$frame <- renderUI({
    click <- input$plot_click
    if(!is.null(click)){
      link = info()$u
      HTML(paste0('<iframe width="400" height="270" src="http://instagram.com/p/', link,"/embed",'" frameborder="0" allowfullscreen></iframe>'))
      }
  })

}

runApp(shinyApp(ui, server), launch.browser = TRUE)

好像还行，我觉得

将 instagram/youtube 嵌入 Shiny R 应用

Embed instagram/youtube into Shiny R app

embed

youtube

video

r

shiny