leaflet

问题 I am loading map data from a GeoJSON file and attaching a click event for every polygone. on click, the script should fetch data from the server AND modify one of the clicked polygon's properties. i.e: function onClick(e) { var status = e.target.feature.properties.ACCESS; $.ajax({ url: "http://127.0.0.1:8080/?&u=x&p="+e.target.feature.properties.ID_PARCELL, dataType: 'jsonp', type: 'GET', success: function(data) { status = data.status; e.target.feature.properties.ACCESS = data.status; e

问题 I am loading map data from a GeoJSON file and attaching a click event for every polygone. on click, the script should fetch data from the server AND modify one of the clicked polygon's properties. i.e: function onClick(e) { var status = e.target.feature.properties.ACCESS; $.ajax({ url: "http://127.0.0.1:8080/?&u=x&p="+e.target.feature.properties.ID_PARCELL, dataType: 'jsonp', type: 'GET', success: function(data) { status = data.status; e.target.feature.properties.ACCESS = data.status; e

问题 I've played with the mouse click event in leaflet using the following code: mymap=leaflet() selected_site=eventReactive(input$mymap_marker_click,{ event <- input$mymap_map_marker_click return(mydt[Long==event$lng & Lat==event$lat,get("sites")]) }) to display a plot from a data.table after a click on a point of the map. Now, I'd like to select an entire area then display data binding to it. In other terms, I'd like to select not a couple of (Lat,Long) but a series of (Lat1, Long1)....(Latn

问题 I've played with the mouse click event in leaflet using the following code: mymap=leaflet() selected_site=eventReactive(input$mymap_marker_click,{ event <- input$mymap_map_marker_click return(mydt[Long==event$lng & Lat==event$lat,get("sites")]) }) to display a plot from a data.table after a click on a point of the map. Now, I'd like to select an entire area then display data binding to it. In other terms, I'd like to select not a couple of (Lat,Long) but a series of (Lat1, Long1)....(Latn

问题 I am using leaflet in my project for displaying objects and elements in map (Open source map). I have drawn some objects in my map using Geojson styles While using Geojson with the leaflet js implementation I am not able to use getBounds option properties. But normally if I am not using Geojson and its features I am able to use this option getBounds mentioned below. var group = new L.featureGroup([marker, circle, polygon, rectangle]); //alert(group); map.fitBounds(group.getBounds()); My set

问题 I have a layer in Leaflet with polygons where there is also overlapping polygons. I want to be able to see which polygon is clicked on by using a highlight feature. But I have problems to make this work properly. If I have a dataset with one set of polygons feature in one layerGroup there is no problem, but it is when I want to use it with multiple polygons with different features and split them into layerGroups that I am not able to solve. How can this be done with below code? Its an example

问题 I am fairly new in using leaflet. Can someone tell me that can I get longitude and latitude of the area where I have finished zooming? and How can I know how many objects are in that area? 回答1: First you need to catch zoomend event, inside an event object will be map instance, from which you can get boundingBox. Then for you check each layer is it inside bbox. map.on('zoomend',function(e){ var map = e.target, bounds = map.getBounds(); map.eachLayer(function(layer){ if(bounds.contains(layer

问题 I'm having some issues displaying an interactive map in R-Shiny that incorporates a KML file. I installed leaflet-plugins and was able to create an HTML file that displays properly by itself in the browser but not within Shiny. This attempt followed an example here - the code is available if you view source. Because this initial version does not require the HTML itself to change, I attempted to follow the samples here to include the raw HTML in my page but I receive a 404 error with these as

问题 I'm having some issues displaying an interactive map in R-Shiny that incorporates a KML file. I installed leaflet-plugins and was able to create an HTML file that displays properly by itself in the browser but not within Shiny. This attempt followed an example here - the code is available if you view source. Because this initial version does not require the HTML itself to change, I attempted to follow the samples here to include the raw HTML in my page but I receive a 404 error with these as

问题 i got a link which try to explain how to store image tiles in file system but not very clear to me. here is the url http://build-failed.blogspot.in/2012/11/zoomable-image-with-leaflet.html just see this image just seen many sub folder has been created as per image but do not understand what they try to point out with arrow images ? how this eso / «z» / «x» / «y».jpg is related with images folder structure? 1) why zero folder is consider as z ? 2) why zero and one sub folder in parent folder