相关疑难解决方法(0)

我希望在我的Shiny R应用程序中有一个工具提示.有没有简单的方法来实现这一目标？现在,我正在创建一个密度图,我想要一个简单的工具提示,显示"点击这里滑过几年",同时将鼠标悬停在滑块YEAR上.

用户界面:

library(shiny)
shinyUI(pageWithSidebar(
  headerPanel("Density Map"),
  sidebarPanel(
    sliderInput("slider_year", "YEAR:", 
                min = 2001, max = 2011, value = 2009, 
                format="####", locale="us"
    )
  )
 ),

  mainPanel(  
    plotOutput("event_heatmap_map", width = "100%", height = "100%")
  )
))

服务器代码:

library(shiny)
library(ggmap)
library(ggplot2)
mydata <- read.csv("/var/shiny-server/www/dMetrics.csv")
shinyServer(function(input, output) {
    output$event_heatmap_map <- renderPlot(width = "auto", height = 640,{

        slice_year <- mydata[mydata$YEAR==input$slider_year,]
        map <- get_map(c(lon = -55.3632715, lat = 31.7632836), zoom = 3, source = 'google', maptype = c("terrain"), messaging = FALSE, color = 'color') …