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

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1
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1answer
12 views

Leaflet Draw - add title to marker or shape?

I am trying to create a participatory mapping site where users can draw pts, lines and polys using Leaflet draw. Is it possible to create a pop window where users can add a title or description of ...
9
votes
4answers
7k views

How to show a popup on mouse-over, not on click?

Is it possible in Leaflet that popup opens on mouse-over, not on click? This is working for just one marker at a time, but I need it for a bigger number of markers: marker.on('mouseover', ...
1
vote
1answer
16 views

Display a link in a popup with Leaflet

Hey there! Im working with the Leaflet javascript library. There should be an option to click on my map and view a popup. I already have a code for that: var popup = L.popup(); function ...
0
votes
1answer
25 views

Displaying geojson data in leaflet

I am trying to access and display some data in a geojson layer and would appreciate if someone can take a look at my code below and suggest what I need to do to make it work. The result of the ...
1
vote
1answer
244 views

Leaflet setView with non lat/long CRS

Is it possible to use setView when using an alternative CRS? var map = L.map('map',{crs: L.CRS.EPSG26915}).setView([4970081,477018], 13); // Returns: Uncaught TypeError: Cannot call method ...
0
votes
0answers
15 views

GeoJSON of half the earth [duplicate]

I'm currently trying to model daytime/nighttime in leaflet, and the only way I currently see me being able to do that is to have a GeoJSON polygon reflecting half of the earth (for daytime/nighttime ...
1
vote
0answers
17 views

Is there a way to have a choropleth map in Excel reading data from a sheet?

Is it possible to have a solution similar to ESRI maps for office in which I want basically a geojson file or any file for that matters to render a choropleth map based on data in a sheet? Tried ...
0
votes
1answer
44 views

Displaying click results in a side panel

I am trying to do something similar to the interactive choropleth map (http://leafletjs.com/examples/choropleth.html) on leaflet's website. In my case I want to use a click instead of a hover and ...
1
vote
1answer
305 views

proj.4 definition for Moscow GCS_Bessel_1841 to WGS84 convertion

I'm developing an app which should show a map using Leaflet framework but i have no luck as the coordinate system on the map server differs from the one used by Leaflet. As a map server i use ...
1
vote
2answers
82 views

Adding multiple layers with timed delay in Mapbox/Leaflet

So I've got a Mapbox map showing data split into several layers. I'd like the user to be able to click a play button to call the function "gogogo", and then the layers get added one at a time every 1 ...
2
votes
1answer
156 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
0answers
19 views

What is the best way to handle metadata with TileStache?

When I'm serving up maps and UtfGrids with tileStache I would like to also include some metadata with the layers so that my leaflet application can understand the context of the layer. For example: ...
5
votes
2answers
106 views

Leaflet: How to enable pan & zoom while GeoJSON still rendering?

I've overlaid a huge GeoJSON geometry on top of my Leaflet map, covering about 20 countries' borderlines (about 1,5 million vertices) using "L.geoJson". Each time I zoom in/out, the computer has to ...
0
votes
1answer
274 views

Leaflet error: Uncaught TypeError: Cannot read property '_controlCorners'

I'm trying to implement the Leaflet choropleth example on a map I already built. I've followed the instructions and seen many implementations of the i.control and control hover option on Github but ...
2
votes
0answers
26 views

Most efficient way to use UTM in leaflet

Our server is using UTM internally. We then send a large number of UTM Coordinates to display them in a custom made leaflet layer. First we transform (unproject) them into "normal" geographical ...
4
votes
0answers
48 views

Need Advice - Displaying very large amounts of data on Leaflet js from database

I'm researching the best way to display a very large weather dataset (850mb +/-) for folks to use on their mobile and desktop devices. This huge dataset (1 point every 12km across the USA) that I'd ...
4
votes
2answers
34 views

Plot a Raster of Weather data in Leaflet JavaScript Map without generating server-side tiles?

I want to show different weather data I have as binary arrays on a server using leaflet. But I do not want to generate tiles on the server. For each point in an a array I have the coordinates in ...
0
votes
1answer
20 views

How to style geojson polygon using L.mapbox.featureLayer()

I have this code: var SupIncend = L.mapbox.featureLayer().addTo(map); var ArbolesAntes = L.mapbox.featureLayer().addTo(map); var ArbolesX = L.mapbox.featureLayer().addTo(map); var ...
5
votes
1answer
142 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 ...
0
votes
1answer
396 views

PHP-MBTiles Server implementation with Leaflet and Wax

Using PHP tile server from infostreams with Leaflet and Wax Connector for Leaflet to visualize my .mbtiles. I upped the source and the .mbtiles on a free hosting service. I am getting a blank Leaflet ...
0
votes
0answers
11 views

Leaflet.js - drag marker from popup

I am trying to allow markers to be dragged via their popup. On mobile devices the marker position to is hard to see underneath the user's finger. If an area on the popup can be designated as an anchor ...
3
votes
3answers
231 views

Is it possible to check incoming GeoJSON to see if any of the features are identical to existing ones before adding to map?

I am working on a Rails/PostGIS app and doing a typical ajax call to retrieve GeoJSON within the map viewport bounds. Whenever the map is shifted or zoomed all of the markers are removed and then ...
1
vote
1answer
27 views

How to insert a map into another map?

If you look at this site it has a main map window but it also has a small window map at the top right corner. What is the technical term for the smaller window? How is that window created? I am ...
0
votes
0answers
11 views

MySQL Select rows where line strings are within a bounding box

I have a MySQL DB with some spatial data stored in a table after being input via ogr2ogr from a shapefile. The structure is similar to the following: OGR_FID int SHAPE geometry (all line ...
0
votes
0answers
10 views

How to set up proxy for Geoserver GetFeatureInfo call? [duplicate]

I have problems with cross domain, I call GetFeatureInfo in Leaflet API. I was looking for solution and saw that proxy could solve that problem. Can you help me how to set it up? I have geoserver run ...
1
vote
0answers
29 views

Multiple Leaflet maps on website in different divs

I'm pretty new to leaflet.js and I'm trying to figure out how to assign the same map with the same set of options and layers to a different HTML container instead of having to remove and add a new one ...
1
vote
1answer
41 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}) ...
1
vote
0answers
17 views

Passing ng-directive to Leaflet L.popup().setContent() [closed]

Goal: Pass an Angular directive to the .setContent() method of L.popup() The Problem: I need to run $compile on the directive in order for it to enter ng. But something like: ...
2
votes
0answers
18 views

Stray horizontal lines after converting from GeoJSON to topojson

After converting a GeoJSON file to topojson, and loading the topojson into Leaflet, stray lines appear in the resulting map. Like this: What is causing this? If I view the GeoJSON, these stray ...
0
votes
1answer
495 views

Why WMS Image Repeat leaflet?

I setup wms service using mapserver, the map file is attached . I have created index page, the code is <!DOCTYPE html> <html lang="es"> <head> <meta charset="utf-8" /> ...
4
votes
1answer
29 views

Leaflet: how to change default style on a point GeoJSON Layer?

I need to change style on a point GeoJSON layer in a Leaflet map. I'm using the following code: function onEachFeature(feature, layer) { if (feature.properties && ...
0
votes
0answers
10 views

Leaflet: verify when a layer is checked in control layers

I'm a newbie in Leaflet, so sorry for the entry level question .... Is there any way to test if a layer in Control Layers is checked or not? I don't find any in API documentation.
1
vote
0answers
36 views

Popups not showing on layer/feature/marker groups

I had two problems. One was that, once I got lots of markers in one layer, and lots of polylines in another, someof my markers, starting from the north, started to vanish. I noted in the doco that ...
1
vote
0answers
24 views

How to get the total route km route using machine leaflet

I'm using machine leaflet route to draw routes I can get the total route miles ?? How can I do this? I know the class IRouteSummary http://www.liedman.net/leaflet-routing-machine/api/#iroutesummary ...
0
votes
1answer
300 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 ...
1
vote
0answers
21 views

Geocoder leaflet for internal use in the company, which take addresses from any part of the street

I am making a personal application routing to be used internally in the company using machine leaflet route. The plugin uses nominatim geocoder, but he geocodificia according to the links of the OSM. ...
0
votes
1answer
33 views

Error with Leaflet Routing Machine

I downloaded the Leaflet Routing Machine from https://github.com/perliedman/leaflet-routing-machine. Unzipped and opened the index.html in my browser to see how it looks, and got an error as shown in ...
1
vote
0answers
16 views

Leaflet: Is there a way to use click event just like mouseout?

I made a map with leaflet by following the official Leaflet tutorial on interactive choropleth maps. I would like to make the map compatible with smartphones, so I added a click event, which acts ...
1
vote
0answers
21 views

What is wrong with my data receiving from php script for geoJSON TileLayer?

I want to get geo data as geojson for geojson tile layer requests in leaflet. I set up a geojson layer like this: https://github.com/glenrobertson/leaflet-tilelayer-geojson/ A php script answers ...
1
vote
0answers
36 views

Show large information in a map (millions of points)

I have millions of points (census data) about 1.5Gb in a text file. But I only want to show an area based on this points like a heat map, so maybe I have to build polygons based on these points. What ...
8
votes
1answer
172 views

Mercator bias plot in Leaflet

I was inspired by this wikipedia image from the mercator projections page to hack around with leaflet. The idea was to interactively have your cursor move a continent and that it would be corrected ...
1
vote
1answer
20 views

Query and Visualize GeoJSON data [closed]

I am trying to visualize specific GeoJSON data. I am successfully loading the full GeoJSON file (Multipolygon) using Leaflet JS. Is there any query to find specific polygon from that GeoJSON file? ...
2
votes
1answer
20 views

Easy way to render TileMill tiles in retina mode with Leaflet?

I have a few quick little map websites that run straight off TileMill, without pre-exporting. They usually have code like this: L.tileLayer('http://example.com:20008/tile/MyMap/{z}/{x}/{y}.png', ...
1
vote
1answer
80 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 ...
2
votes
1answer
203 views

Large loads geojson from mysql to leaflet?

I have a mysql database with +25K rows including geometry and other attributes. Using a mysql2geojson php script I then added it to a leaflet map. It is super slow now, what can I do to boost the ...
1
vote
2answers
974 views

how does one reset map.fitbounds (zoomtofeature()) to the original zoom?

I have a lovely map setup using Leaflet with MapBox tiles (only). It is a United States map with polygons for each state with an onclick event to zoomToFeature. The basic zoomToFeature() function ...
13
votes
6answers
3k views

Visualizing large datasets with Leaflet

When using Leaflet to visualize a large dataset (GeoJSON with 10,000 point features), not surprisingly the browser crashes or hangs. A sub-sample of 1000 features from the same dataset works ...
1
vote
1answer
35 views

Leaflet WMS GetFeatureInfo gives result only on zoom level 10

I am using GetFeatureInfo with wms layer to get the data behind. The request returns data only after zoom level 10 before that it returns empty features. Does anyone having same issue? I think it ...
1
vote
1answer
53 views

How to use Leaflet Marker Cluster on markers from Leaflet-layerJSON (Overpass API)

I'm having troubles getting the Leaflet Marker Cluster working with Leaflet-layerJSON. I'm trying to make a Leaflet map with data from OpenStreetMap. The markers are showing on the map, but they are ...
2
votes
0answers
27 views

loading geojson in leaflet

I just added the geoJSON vector layer in leaflet for my hybrid mobile app using phonegap, the problem is that when I add the geoJSON file of size larger than 2mb the application crashes. What is the ...