为绘图图表生成下拉菜单

Question

这是我对10只股票波动性的代码：

   ##------------producing stock volatility plot---------##

p1 = ggplot(Closed_Price_Return, aes(Date, R.BPCL)) + geom_line(color = "blue") + 
     theme_bw()
p2 = ggplot(Closed_Price_Return, aes(Date, R.TCS)) + geom_line(color = "green") +
     theme_bw()
p3 = ggplot(Closed_Price_Return, aes(Date, R.CIPLA)) + geom_line(color = "red") +
     theme_bw()
p4 = ggplot(Closed_Price_Return, aes(Date, R.EICHER)) + geom_line(color = "pink") +
     theme_bw()
p5 = ggplot(Closed_Price_Return, aes(Date, R.INFY)) + geom_line(color = "yellow") +
     theme_bw()
p6 = ggplot(Closed_Price_Return, aes(Date, R.LT)) + geom_line(color = "purple") +
     theme_bw()
p7 = ggplot(Closed_Price_Return, aes(Date, R.MARUTI)) + geom_line(color = "orange") +
     theme_bw()
p8 = ggplot(Closed_Price_Return, aes(Date, R.RELIANCE)) + geom_line(color = "#7fffd4") +
     theme_bw()
p9 = ggplot(Closed_Price_Return, aes(Date, R.SUNPHARMA)) + geom_line(color = "#ff1493") +
     theme_bw()
p10 = ggplot(Closed_Price_Return, aes(Date, R.YESBANK)) + geom_line(color = "#ff7256")+ 
     theme_bw()

##------------Converting the ggplots into plotly objects-------##
p1 = ggplotly(p1)
p2 = ggplotly(p2)
p3 = ggplotly(p3)
p4 = ggplotly(p4)
p5 = ggplotly(p5)
p6 = ggplotly(p6)
p7 = ggplotly(p7)
p8 = ggplotly(p8)
p9 = ggplotly(p9)
p10 = ggplotly(p10)

现在，我想为所有这些图表生成一个下拉菜单按钮。请告诉我如何处理plotly中的按钮代码

Answer 1

一种方法是(就像plotly page上的例子一样)，创建所有跟踪不可见的plotly，然后添加一个切换可见跟踪的下拉列表：

plot_ly(mtcars, x = ~gear) %>%
  add_trace(y = ~cyl, name = "cyl", visible = F, color=I("blue")) %>%
  add_trace(y = ~hp, name = "hp", visible = F, color=I("green")) %>%
  add_trace(y = ~gear, name = "gears", visible = F, color=I("red")) %>%
  layout(
    yaxis = list(title = "y"),
    updatemenus = list(
      list(
        y = 0.7,
        buttons = list(
          list(method = "restyle",
               args = list("visible", list(TRUE, FALSE, FALSE)),
               label = "cyl"),
          list(method = "restyle",
               args = list("visible", list(FALSE, TRUE, FALSE)),
               label = "hp"),
          list(method = "restyle",
               args = list("visible", list(FALSE, FALSE, TRUE)),
               label = "gear")))
    )
  )

在您的情况下，只需在add_trace中定义一个不同的y即可。TRUE/FALSE列表的长度必须与您的下拉列表中的轨迹相同。

这对于一个闪亮的小应用来说也是非常简单的：

library(shiny)
library(plotly)

p1 <- plot_ly(mtcars, x=~cyl, y=~gear)
p2 <- plot_ly(mtcars, x=~hp, y=~am)

ui <-shinyUI(fluidPage(selectInput("selectPlot", "Choose desired plot", choices=paste0("p", 1:2)), plotlyOutput("plot")))

server <- shinyServer(function(input,output){      
  output$plot <- renderPlotly({
    return(get(input$selectPlot)) # get("p1") from the workspace returns the object p1, which is a plotly object
  })
})

shinyApp(ui,server)

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