r leaflet: how to obtain lat/long where marker has been dragged to?












0















in R's version of leaflet, How can I obtain the lat longs of where markers have been dragged to?



library(shiny)
library(leaflet)
library(tidyverse)

ui = fluidPage(
leafletOutput('map'),
textOutput('dragEndLocation')
)

server = function(input, output, session){
output$map = leaflet() %>%
addTiles() %>%
addMarkers(lat = 1,lng = 2, options = markerOptions(draggable = TRUE)

output$dragEndLocation = renderText({
???
})
}


I see in javascript leaflet, there is an event called dragEnd that you can listen for, but it is not implemented in R leaflet. (leaflet.js - Set marker on click, update position on drag)



This person (How to update coordinates after dragging a marker in leaflet shiny?) made a hack-y workaround by listening for input$map_marker_mouseout and then checking if the lat long has changed, but it is not ideal. When you drag a marker very quickly, mouseout will register several times. It is not a problem for this minimal working example, but for my actual application which wants to a slower script after drag end, it makes this workaround very buggy and slow.



Any ideas?










share|improve this question



























    0















    in R's version of leaflet, How can I obtain the lat longs of where markers have been dragged to?



    library(shiny)
    library(leaflet)
    library(tidyverse)

    ui = fluidPage(
    leafletOutput('map'),
    textOutput('dragEndLocation')
    )

    server = function(input, output, session){
    output$map = leaflet() %>%
    addTiles() %>%
    addMarkers(lat = 1,lng = 2, options = markerOptions(draggable = TRUE)

    output$dragEndLocation = renderText({
    ???
    })
    }


    I see in javascript leaflet, there is an event called dragEnd that you can listen for, but it is not implemented in R leaflet. (leaflet.js - Set marker on click, update position on drag)



    This person (How to update coordinates after dragging a marker in leaflet shiny?) made a hack-y workaround by listening for input$map_marker_mouseout and then checking if the lat long has changed, but it is not ideal. When you drag a marker very quickly, mouseout will register several times. It is not a problem for this minimal working example, but for my actual application which wants to a slower script after drag end, it makes this workaround very buggy and slow.



    Any ideas?










    share|improve this question

























      0












      0








      0








      in R's version of leaflet, How can I obtain the lat longs of where markers have been dragged to?



      library(shiny)
      library(leaflet)
      library(tidyverse)

      ui = fluidPage(
      leafletOutput('map'),
      textOutput('dragEndLocation')
      )

      server = function(input, output, session){
      output$map = leaflet() %>%
      addTiles() %>%
      addMarkers(lat = 1,lng = 2, options = markerOptions(draggable = TRUE)

      output$dragEndLocation = renderText({
      ???
      })
      }


      I see in javascript leaflet, there is an event called dragEnd that you can listen for, but it is not implemented in R leaflet. (leaflet.js - Set marker on click, update position on drag)



      This person (How to update coordinates after dragging a marker in leaflet shiny?) made a hack-y workaround by listening for input$map_marker_mouseout and then checking if the lat long has changed, but it is not ideal. When you drag a marker very quickly, mouseout will register several times. It is not a problem for this minimal working example, but for my actual application which wants to a slower script after drag end, it makes this workaround very buggy and slow.



      Any ideas?










      share|improve this question














      in R's version of leaflet, How can I obtain the lat longs of where markers have been dragged to?



      library(shiny)
      library(leaflet)
      library(tidyverse)

      ui = fluidPage(
      leafletOutput('map'),
      textOutput('dragEndLocation')
      )

      server = function(input, output, session){
      output$map = leaflet() %>%
      addTiles() %>%
      addMarkers(lat = 1,lng = 2, options = markerOptions(draggable = TRUE)

      output$dragEndLocation = renderText({
      ???
      })
      }


      I see in javascript leaflet, there is an event called dragEnd that you can listen for, but it is not implemented in R leaflet. (leaflet.js - Set marker on click, update position on drag)



      This person (How to update coordinates after dragging a marker in leaflet shiny?) made a hack-y workaround by listening for input$map_marker_mouseout and then checking if the lat long has changed, but it is not ideal. When you drag a marker very quickly, mouseout will register several times. It is not a problem for this minimal working example, but for my actual application which wants to a slower script after drag end, it makes this workaround very buggy and slow.



      Any ideas?







      r leaflet






      share|improve this question













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      asked Nov 19 '18 at 8:17









      Lee88Lee88

      4111415




      4111415
























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