点击标记打开绘图/数据表 [英] Click on marker to open plot / data table

问题描述

我正在制作闪亮的传单.这些工具是基本的，我有一张带有一些标记的地图(来自带有 LONG 和 LAT 的表格).

I'm working on leaflet with shiny. The tools is basic, i have a map with some markers (coming from a table with LONG and LAT).

我想要做的是当我点击标记时打开一个表格或图表.

What I want to do is to open a table or a graph when i click on the marker.

有简单的方法吗?

你有一个非常简单的例子吗:你在地图上有一个制造者，你点击标记，然后有一个图或一个表格或 jpeg 正在打开?

Do you have a really simple example: you have a maker on a map, you click on the marker, and there is a plot or a table or jpeg that s opening?

推荐答案

这是另一个例子，取自这里和有点适应.当你点击一个标记时，下表会相应改变.

Here is another example, taken from here and a little bit adapted. When you click on a marker, the table below will change accordingly.

除此之外，这里的手册是一个很好的资源:https://rstudio.github.io/leaflet/shiny.html

Apart from that, a good resource is this manual here: https://rstudio.github.io/leaflet/shiny.html

library(leaflet)
library(shiny)
myData <- data.frame(
  lat = c(54.406486, 53.406486),
  lng = c(-2.925284, -1.925284),
  id = c(1,2)
)
ui <- fluidPage(
  leafletOutput("map"),
  p(),
  tableOutput("myTable")
)
server <- shinyServer(function(input, output) {
  data <- reactiveValues(clickedMarker=NULL)
  # produce the basic leaflet map with single marker
  output$map <- renderLeaflet(
    leaflet() %>%
      addProviderTiles("CartoDB.Positron") %>%
      addCircleMarkers(lat = myData$lat, lng = myData$lng, layerId = myData$id)  
  )
  # observe the marker click info and print to console when it is changed.
  observeEvent(input$map_marker_click,{
    print("observed map_marker_click")
    data$clickedMarker <- input$map_marker_click
    print(data$clickedMarker)
    output$myTable <- renderTable({
      return(
        subset(myData,id == data$clickedMarker$id)
      )
    })
  })
})
shinyApp(ui, server)

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