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

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2 views

How to add custom CSS class to leaflet tilelayer

I am working with mapbox.js and leaflet to create a map with a number of overlapping tilelayers. I want to apply some custom CSS to only selected tilelayers, and thus assign these layers to an ...
2
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1answer
219 views

Leaflet removing labels when any popup window is shown

I am newbie to leaflet and i found the following solution to add static labels to features in my map: L.CircleMarker.include({ bindLabel: function (content, options) { if (!this._label || ...
2
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1answer
243 views

Draw heatmap only over water layer using Leaflet?

I need to draw a heatmap, but only over water because I want to represent water heat level. I am using Leaflet. How can I do it? I found an only-water layer, maybe it would be usefult for developing ...
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2answers
167 views

Cartogram plugin for leaflet or OSM

Does anyone know if there is a plugin to make cartograms for leaflet? I have sets of geotagged Twitter datas and I'd like to distord the map according to the density of tweets of every area of the ...
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0answers
134 views

how to bind custom marker controls to map : leaflet

I am working on map control app using leaflet plugin .... I added a custom button for marker in side toolbar.... Target I want to put marker on map when i click on that button....in other words i ...
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6 views

Features disappear from Leaflet after zooming in

I have a Mapbox studio template which already looks the way I want it to, but when I put it in a Leaflet app, after I zoom in past level 17, a lot of the features disappear. Zooming in inside Mapbox ...
2
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1answer
220 views

Showing link for every city at different zoom levels using Leaflet?

I have a Leaflet map that I am using to render a map of the U.S. The map will have specific zoom levels. For example, when the map first loads it will show major U.S. cities. Then if you zoom in it ...
3
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2answers
79 views

Get tile layer intensity at given zoom and longitude/latitude (Leaflet)

I can display a tile layer as an overlay in Leaflet via an url of the form path/to/my/tile/layer/{z}/{x}/{y}.png : my_overlay = L.tileLayer('http://path/to/my/tile/layer/{z}/{x}/{y}.png', { maxZoom: ...
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2answers
88 views

Leaflet output is grey

I would like to implement leaflet in shiny with R. I try to go with the simple examples I found online: library(leaflet) library(ggmap) somePlace <- ggmap::geocode("Vienna") # Information from ...
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16 views

Markers display with leaflet and javascript

I have a problem displaying data relating to schools on a div 'info' when click the marker with leaflet and javascript: here's the error: Uncaught TypeError: layer.setStyle is not a function
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14 views

condition that displays two div different with leaflet [on hold]

I wanted to create a condition that displays each time according to different div click on the data on the map
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1answer
8 views

Leaflet push GPS position to array onLocationFound and search a squared area around this position

So I have this approach of pushing the coordinates of a location to an array: var gpsposition = [], function onLocationFound(e) { gpsposition.push(e.latlng);} Now I have the following questions: ...
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70 views

Calculating pixels in leaflet

I am working with leaflet plugins, calculating distance between two points of a polyline or whole distance of joint/multiple lines Work : I set up the script to measure the distance in meters when ...
3
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1answer
454 views

Leaflet custom div & click propagation on other elements

I've gotten custom HTML applied successfully within my #map element (where Leaflet is appended) but I'm having unusual behavior with other Leaflet objects that find themselves within the transparent ...
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3answers
52 views

Different values while calculating distance

I'm developing a project using LeafleatJS and PostGIS. Currently I'm getting trouble while calculating distance between two coordinates. For example: Point 1 - lat: -12.99835864475412, lng: ...
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40 views

Can we set the latlng start point : leaflet

I am working with the leaflet api. I am trying to figure out how to change or set the latlng start point in leaflet map. Currently i am working on use image as map,,,,the latlng(0,0) is at the ...
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47 views

Is it possible to use a raster::click event within an interactive leaflet map?

Data Download: https://www.dropbox.com/s/f849ra8l6umo9d8/crops.tif?dl=0 I have various raster images of the world that I would ultimately like to plot within an interactive leaflet map; an example is ...
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1answer
34 views

CartoDB Point Clustering and on Hover

I have been working from a sample on point clustering from cartodb. I would like to have an infowindow show when someone hovers over a series of points. This infowindow will display a different ...
2
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1answer
16 views

Can reference system in Leaflet be changed without disrupting data position?

I have a leaflet map that uses default CRS (EPSG3857) with multiple markers placed on it. Their LatLng are read from JSON file. I want to change map CRS to Simple, keeping markers on exact same screen ...
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1answer
278 views

Pass coordinates parameters to geoserver pgrouting service from Leaflet wms tile layer

I've configurated a pgRouting service in Geoserver, following the steps on the documentation it's easy to accomplish. Reading the documentation, existing examples, etc.. I've come to undestand how ...
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0answers
123 views

redraw canvas when add new overlay?

How to redraw canvas when I add overlay layer? Firstly load osm map, then creates canvas. So when I push the botton and add another layer it looks like sandwich and canvas in a middle...first layer - ...
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0answers
12 views

Leaflet printing does not show pins and map is shifted

I don't exactly why but whenever I try to print my leaflet map with layers, it shows the map a little shifted to the left as well as the pins are not quite ok. I tried using easyPrint() and ...
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1answer
1k 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 ...
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0answers
17 views

Non-HTML circle text labels on Leaflet map

I need to save image of Leaflet map with polygon, multi-polygons, circles and text below every circle. I have geojson file with circle and polygon coordinates (lat and lng). I managed to get image of ...
2
votes
1answer
23 views

Invalid Geojson when drawing multipolyline on the map

I try to display multi line in the map but it return "Error: Invalid GeoJSON object" Here is my code $.ajax({ type: "POST", url: "server/drawPipe.php", ...
1
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1answer
180 views

Leaflet + GeoServer + British National Grid

I have followed along some examples and was able to display BNG 27700 data nicely on the map, however now I want to perform getFeatureInfo function on click. Again the code I used is as below: var ...
1
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1answer
196 views

CartoDB JSONP callback in leaflet-search plugin

long time reader, first time question-asker etc... So I'm trying to implement a search function on an app I'm building using data from cartodb in leaflet and this leaflet-search plugin: ...
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0answers
43 views

Scale (or stretch) Leaflet map tiles to look bigger

I am using leaflet and I am using the same tile provider as the main openstreetmap's website (http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png). However, leaflet seems to fit many more tiles in 1 ...
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0answers
14 views

Leaflet polyline not working

I'm trying to draw polyline to connect an array of waypoints. But I'm getting an empty div like this instead of a map with route. My code is this: <script> // set center ...
2
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1answer
45 views

Leaflet Routing Machine: how to dinamically change router settings?

I'm using Leaflet Routing Machine in a litte Leaflet + Javascript map. I'm using Graphhopper as router in this way .... var control = L.Routing.control({ waypoints: [ L.latLng(57.74, 11.94), ...
2
votes
1answer
505 views

Z-Index in GeoJSON features using leaflet

I have a watershed polygon with sub-watersheds contained within the larger watershed. I would like the sub-watersheds drawn on top. Can i control the drawing order of features within a geojson object ...
0
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1answer
559 views

Leaflet geoserver wms doesn't show on google map base layer

I have a site running Openlayers (base layer google and overlay wms in epsg4326 from geoserver). The site works fine. I've decided to try doing the same with leaflet , and from some reason I can't ...
2
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1answer
290 views

Load Leaflet map in canvas element

I am working with leaflet tiles loading tiles to a map div http://jsfiddle.net/tBCd5/ I am now playing with some html5 canvas distortions like below http://jsfiddle.net/UF4PK/ It would be cool to ...
2
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1answer
26 views

Convert/display grayscale image as RGB

i want to display raster images using a color palette in a leaflet map. The images are tiled (gdal2tiles) from a single .tif to multiple .png files with values from 0 to 100. I add the image using ...
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0answers
9 views

Leaflet _onDrag throws TypeError: this._positions is undefined

I am creating a map using the MapQuest API with Leaflet. Up until today the map worked fine in development and no errors were being shown in FF dev console. This morning when I was giving a ...
1
vote
1answer
491 views

Leaflet update getcenter coordinates

I am bringing in leaflet routing control into my map and I would like to have the route icons show up in the center of the current view. using the code below I can get the icons to show up at the ...
0
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1answer
273 views

map.on('click') event disables the double click zoom

I have a map that has an onclick event fired and displays a marker where the user has clicked. Problem is that this event seems to overrun the double click event. Because of this, when I double click ...
3
votes
1answer
75 views

Using MSID/MID with leaflet to display Google My Maps data

I'm wondering if there is a way to display MSID/MID with leaflet. I found this forum below; Any way I can load KML data from Google maps (again) via JS API? KMZs work fantastically with the arcgis ...
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2answers
25 views

Remove layer switcher controller in leaflet

I have created a map in leaflet and added an overlay as: map.layerscontrol.addOverlay(tile_layer,"{{ resource.title }}"); map.addLayer(tile_layer); The map shows great and the layer as well. Now I ...
2
votes
1answer
14 views

Render rotated symbols in Leaflet

I have point with an attribute for each point's 0-360 direction. I need to render these points in Leaflet with arrows pointing in their respective directions. Is there a plugin or code I can use to ...
4
votes
1answer
32 views

How can I change popup position on leaflet marker?

I want open a popup on bottom of my marker icon in leaflet. my code: var mymap = L.map('mapid').setView([51.505, -0.09], 13); ...
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2answers
581 views

Polygon intersection with bounding box with polygon's holes intact

I am trying to serve GeoJSON FeatureCollection tiles with each feature's geometries trimmed to the tile boundary. I am working on a Leaflet plugin to re-assemble the geometries. It works by building ...
0
votes
1answer
35 views

Hide/Show leaflet markers based on specific values

I have a Python list of dictionaries with a number of IPs and "Scores" for each IP. I'm adding them to my front end map / leaflet using jinja2 like so: var map = L.map('map') ...
0
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1answer
434 views

Leaflet: Scroll wheel controlling map zoom and not drop down menu

Edited 6/19/2015 I have a custom leaflet control box with a drop down menu. When I use the scroll wheel over the menu, the map changes zoom level instead of scrolling the menu. The problem occurs ...
1
vote
1answer
333 views

Add an event listener on a Marker in Leaflet

I am using leaflet in order to render a map. I created a map with markers and i dont know how to implement the Event Listener 'onClick' on each Marker. My code var stops = JSON.parse(json); var map ...
0
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1answer
262 views

How to filter polygons in Leaflet using range slider

I have a map I'm working on with Leaflet that displays a choropleth of zip code-level data. One piece of functionality I would like to add is to allow users to use a range slider to filter out ...
2
votes
2answers
508 views

How to tell if a GeoJSON path intersects with another feature in Leaflet?

I have an application where the user draws a path (a series of connected straight lines) and this path may not intersect any feature in a particular GeoJSON layer. I need to check that no point along ...
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1answer
1k views

Reset leaflet routing machine route and controls

Im trying to build a geolocation based routing app in angular using leaflet.js and leaflet routing machine. I have this 'addRouting' function where I pass in a users location (fromLat, fromLng) and ...
2
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2answers
26 views

Leaflet zoom less than default

How can I make leaflet zoom less with mouse wheel ? If I move my mouse wheel as little as I can, it zooms like 3 levels.
0
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1answer
1k 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', ...