An Open-Source JavaScript Library for Mobile-Friendly Interactive Maps

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0
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1answer
23 views

Selecting features by attribute in Leaflet

Is there a way to select an individual feature based on an attribute from a FeatureGroup in Leaflet? For example, when selecting a feature based on a click event, I will do something like, function ...
0
votes
1answer
40 views

QGIS2WEB white screen on export/preview?

When I export my QGIS2WEB project it goes through, but when it loads up in my browser after the export is done all I see is a white background with the zoom/minus feature in the top left hand of the ...
1
vote
1answer
28 views

Leaflet.label and MarkerCluster problem with zoom dependent add/remove layers

Here's the setup: I have a leaflet map with point data, to which I have applied leaflet.label and leaflet.markercluster. I add the clustered point data at a particular zoom level (code below). All ...
0
votes
1answer
182 views

Reset Leaflet map

I'm creating a map like this: var map_object = new L.Map('map', { center: [39.8282, -98.5795], zoom: 5, }); var sublayers = []; ...
2
votes
2answers
46 views

Qgis2leaf doesn't show layers with scale-dependent visibility

When I add layers to the QGIS2LEAF dialog box it accepts it and opens up the preview in my web browser, but when I starting looking for the layers, in this case points for campgrounds, I dont see any ...
0
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1answer
374 views

How to export to all points within Leaflet polygon?

Is it possible to export all points within a polygon drawn using Leaflet? (http://leaflet.github.io/Leaflet.draw/).
2
votes
1answer
505 views

How to get data from TileMill tileLayer properties in Mapbox for click/hover

I've successfully used Leaflet to load a geoJSON polygon-shapefile with data, and added click and hover interactivity to the layer. For a large dataset, I switched to mapbox.js 1.6.1, used TileMill to ...
1
vote
1answer
173 views

Leaflet and census block data: not displaying

I am new to leaflet and am trying to load a geojson file showing census blocks and associated information for a city in CA. It is a small city and not too many census blocks. I cannot get the popup ...
0
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0answers
18 views

Leaflet controls: onAdd() -> “ready” event

I've got a custom control for Leaflet (0.7.3) that uses L.DomUtil.create to generate its own HTML in the onAdd() function. Most of its bootstrapping happens in onAdd(), but I need to do some final ...
0
votes
0answers
316 views

Bootstrap navbar and leaflet zoom controls

I'm using the THE MAP GUY(DE) Bootstrap temple and applying it to leaflet using the code below. The issue I'm having is that the zoom-control doesn't toggle right on page load. It will only after ...
2
votes
1answer
18 views

Input a number for user's number entry

The following code works fine. When I click the "Test Play/Stop" button a series of points from the 'geojson' list are drawn with popup attributes one by one. The time interval is defined by the ...
0
votes
1answer
14 views

Reading values/attributes from external *.txt file

The following code works fine. When I click the "Test Play/Stop" button a series of points from the 'geojson' list are drawn with popup attributes one by one. How can I put the list 'geojson' as ...
0
votes
2answers
45 views

How to transform EPSG:3857 to tile pixel coordinates at zoom factor 0?

I'm creating a Leaflet map with an WebGL overlay (using L.CanvasOverlay) which renders a street network on the GPU. Let's assume I have a point (1497143.62, 6896952.18) in EPSG:3857 and want to ...
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vote
0answers
30 views

How to access Leaflet EPSG:3857 coordinates?

I read everywhere that Leaflet is internally using a spherical web mercator (EPSG:3857), but whatever I try I get either Lat/Lon (EPSG:4326) or strange coordinates I dont understand: ...
0
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0answers
21 views

In Leaflet how to use control on an existing div?

In Leaflet, adding control classes like Zoom In/Zoom Out is possible. But I do not want to add a new div into my html. I want to use an existing div to contain my tools. I am pretty sure that it can ...
1
vote
1answer
25 views

Shared markers/paths in layer groups - toggle issues

I'm working on a map that displays the trips I've taken. I've created many markers and lines to designate locations and the paths between them. I've created trips using the required markers/paths and ...
1
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0answers
27 views

Leaflet Temporal animation of marker clusters

I recently have applied the markercluster leaflet plug-in to my map and I was wondering if something like leaflet.timeline would be compatible with cluster visualization? if not is there any other ...
0
votes
1answer
40 views

R-Leaflet: Plotted points on wrong country

I am learning the leaflet package and am running into a snag. To learn the package I am using the Snow deaths dataset from the package HistData which contains historic Cholera deaths from an epidemic. ...
0
votes
1answer
20 views

Proj4Leaflet create CRS scales/resolution from WMTS getCapacilities ScaleDenominator

I trying to set up the CRS scales/resolution for a map accordingly to the provided information of an WMTS getCapabilities request. At the moment I'm playing with the following service. The service ...
2
votes
1answer
192 views

Can't project ArcGIS Tiled Service for Esri-Leaflet

I'm following this example from the esri-leaflet docs. I have an ArcGIS Tiled MapService in ESRI:102696. So I'm trying to use Proj4Leaflet to project the service and use it in my application. I ...
0
votes
1answer
184 views

Leaflet: how can I update content of popup by jQuery

in my popup is a spinner with class=spinner and an empty container for addon informations. I want to hide after successful ajax. I want to add some html in a container. I tried this: ~~~ ...
0
votes
2answers
48 views

QGIS2WEB Error when exporting to Leaflet/OL3

I am having all kinds of problems with the QGIS plugins fr exporting my map to Leaflet or OL3. Whenever I try to preview my project I just get a white screen with nothing. Then when I try to Export to ...
3
votes
1answer
116 views

Navigate two leaflet maps

I am looking for an example where there would be multiple map divs containing leaflet maps. When one is panned I want the other one to pan or zoom with it so they are always in sync.
1
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0answers
53 views

Leaflet : Change marker icon from onEachFeature instead of pointToLayer

I'm referencing external data, matching it up with particular fields in feature.properties and using that to decide which layer to put the feature in, all of this from inside the onEachFeature part. ...
6
votes
1answer
238 views

Moving a shape around the earth while maintaining the proper projection

What is the transformation needed to be taken on every data point of a shape to rotate that shape around the globe. I'm trying to figure out the math behind this kind of transformation so I can ...
1
vote
1answer
818 views

How do I add elevation data to a GeoJSON line from a GPX file?

I understand that elevation can be added as an optional third value in Coordinates (lat, long, elev) in a geojson file, but I can't find a way to actually do that from a gpx file. I've used ogr2ogr to ...
1
vote
2answers
297 views

Load or display differents geojson data on zoom level for leaflet maps

I have a map with 3 levels of information. The first is the country, the second the state and the last one the cities. I wonder know if it's possible to use the zoom value in order to display the ...
0
votes
1answer
268 views

Positioning leaflet divIcon when adjusting size using css

I am using the L.divIcon when using iconSize:null which is causing iconAnchor:[0,0] to not be recognized,my code looks like this: var divIcon =L.divIcon({ className:'current-location-icon', ...
3
votes
1answer
184 views

Leaflet change color dynamically

I am new with leaflet and I need help to change the color of a polygon on a choropleth map dynamically. In my website I have an slider, and depending on the position of the handle, the colors of the ...
0
votes
1answer
50 views

Map Not rendered Leaflet but renders correctly in changing the zoom level of browser

I am loading a leaflet map rendering mapbox tiles, geojson layers (initially i dont show the map) and i also have tabular links which can be seen when the page loads, the links are list of places and ...
1
vote
1answer
372 views

How to add multiple cartodb layers in viz.json to a leaflet layer control

I have create a visualisation in cartodb with 4 layers. The resulting viz.json is added to a leaflet map as follows: cartodb.createLayer(cartomap, [url], {https:true}) ...
4
votes
0answers
42 views

Describing borehole information with geojson (javascript)

I deal a lot with borehole information and looking the best way to move it around in javascript / take advantage of javascript libraries (e.g. leaflet) for looking at this information on mobile ...
1
vote
2answers
151 views

IE8 problem with proj4.js

This problem is in IE8 and not in Firefox. My first problem was that IE8 don't support JSON natively and I get the "JSON is undefined". I solved this by including json2 or json3. Now JSON.parse ...
1
vote
0answers
16 views

Leaflet inbuild AJAX methods for WMTS getCapabilities request

I was wondering whether the Leaflet library has inbuilt methods to make AJAX requests. My goal is to create a plugin that makes an XMLHttpRequest request to a specified WMTS resource and parse the XML ...
1
vote
1answer
64 views

Using Mapbox (LeafletJS), how do I edit imported shapes from GeoJSON?

Overview: I'm currently working on a project where I'm importing GeoJSON into a map using Mapbox. However, I'm wanting to be able to edit those shapes once imported into the map. I've gotten the ...
0
votes
0answers
14 views

Open Popup on CartoDB Layer

I have a cartodb viz layer (polygons) and geojson layer in a leaflet map (parcels), where the geojson layer overlaps the cartodb layer. How do I disable the interaction to the geojson polygon layer so ...
0
votes
1answer
41 views

Leaflet: Find my “this” in GeoJSON.pointToLayer function

In leaflet, I have a class that extends L.GeoJSON: L.MyLayer = L.GeoJSON.extend ({ initialize: function () { this.markers = []; ... I redefined the pointToLayer method to create ...
1
vote
2answers
27 views

Embed Sound in Leaflet Popup with QGIS

I was wanting to embed some animal sounds in a leaflet map my son and I are creating. Have images embedded, but would like sounds in the popup if possible. Like embedding images, can this be done ...
0
votes
0answers
17 views

how to remove duplicate values geojson on feature.properties.name?, using leaflet oneachfeature

I have duplicate value into select combobox, using oneachfeature and geojson the values are into combobox select, I'm trying to remove duplicate caracteristiscas the GeoJSON to populate within a ...
0
votes
0answers
46 views

Leaflet tile rendering

I've startet tinkering with the Leaflet JS library in order to display a Web Map Tile Service (WMTS). By default Leaflet does not support the WMTS standard. An initial investigation has revealed that ...
0
votes
3answers
27 views

Make polygon from area not covered by loaded polygons (like invert selection)

See screenshot, from geojson.io, with a geojson file loaded: So how do we make a polygon out of the blank area? Looking for a way which doesn't involve manually copying selected sequences of ...
0
votes
0answers
42 views

Web Application for display raster data on basis of time slider

It May act as a duplicate question to many, but i have tried refering too all the questions related to my questions, but i am still confiused. Below in attached my code. which i use for Web Mapping ...
0
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0answers
28 views

XY bounds for L.tileLayer in CRS.Simple

Sorry for my english Hi, I have leaflet.js (image of map 5913x7863) and there L.CRS.Simple I had var imageBounds = [[1468.9700,-11.7050], [1968.2705,363.7705]]; var file0 = new ...
5
votes
2answers
1k views

Leaflet mouse wheel zoom only after click on map

I'm working with the Leaflet JavaScript Library and attached a (working) map to my HTML Document. It is in the middle of the page, and when I'm scrolling down with my mouse wheel and arrive at the ...
0
votes
0answers
21 views

Tilestache not giving me individual tiles

I'm using Tilestache to serve some tiles outputted from Tilemil: my cfg file looks this: "layers": { "main": { "provider": { "name": "mbtiles", "tileset": ".../DCMetro.mbtiles" ...
2
votes
1answer
227 views

Is it possible to use two layer.bindPopup functions in Leaflet

I have two different layers in a leaflet map. I have one layer in which I would like the popup to return some text from the layer's attributes. They other layer I would like the popup to return an ...
1
vote
2answers
2k views

Leaflet draggable Marker

I have setup a draggable marker on my map with Leaflet API. Its working fine. But the problem is when I am trying to drag it to the border area the map is not moving. I want a panning map with Marker ...
0
votes
1answer
64 views

Leaflet markerClusterGroup 'undefined is not a function'

I have to create a map with more than 5000 points from a geojson. So I would like to use markercluster plugin with Leaflet. I wrote the following code with help from the documentation and from other ...
1
vote
0answers
30 views

How to 'filter' a district by clicking on it in Leaflet?

I have created a basic layer of districts on a background google streetmap on QGIS. Using the qgis2leaflet plug in, I'm able to render a webpage of the same. I want the web product to be such that ...
-1
votes
1answer
54 views

How Map tiles can be downloaded from Mapbox or OpenStreetMap?

I am trying an offline Map application in which I need to show a map up to some zooming level. I thought that I would download tiles and put it locally.