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

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1answer
42 views

Leaflet Layer Control appended to panel but duplicated

So I've used jquery append to attempt to move my leaflet group layer controls on to a panel. This was successful, however the original still exists on the right side of the map object. I've tried to ...
2
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2answers
67 views

zoom over vector in leaflet

I have created a map from geojson file of administrative boundaries (polygons layer). Similar to this example. When the mouse is over the polygon feature, the cursor changes from hand to finger. In ...
2
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0answers
78 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
48 views

Zoom variable or pixel distance

I have query by distance working in a framework that generates a list of features within a fixed distance of a clicked feature. I would like to make the queried distance variable based on either: ...
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0answers
29 views

Leaflet - Enable/Remove popup on mousedown/mouseup?

I'd like to do as the title suggests and can get the popup to appear on mousedown with the following code, but mouseup doesn't close the popup: // Quick look at info on mouse hold ...
3
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0answers
36 views

How to update location via a data streame in openlayers or Leafletjs

I'm developing a application where I need to real-time update a Location of a Map using a data stream, I'm planing to use web-sockets, Are there any guides I can follow? Or can you guys direct me in ...
2
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1answer
37 views

When I publish a layer(shapefile or postgis) with TileMill, 200 meters moves

I hope someone can help me. Not if you know the TileMill application I'm working with her to publish layers look more beautiful. Well, first I have posted directly loading the shp file., But when ...
0
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1answer
77 views

Leaflet Custom Control Fails

Why does the myMenu control not respond to a click? var map = L.map('map').setView([51.505, -0.09], 13); L.tileLayer('https://{s}.tiles.mapbox.com/v3/{id}/{z}/{x}/{y}.png', { maxZoom: ...
2
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2answers
82 views

Flannery compensation in Leaflet JS

I'm creating a bubble map using Leaflet JS. Everything is working smoothly (LeafletJS is awesome!) but now I'd like to try flannery compensation on the bubbles. I can't find the math anywhere though. ...
0
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1answer
82 views

Leaflet WMS Google Maps Engine

I am trying to connect to my Google Maps Engine Map using WMS in my leaflet application. I am able to connect just fine with ArcMap. However when using leaflet, I get 'no data for requested ...
1
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2answers
102 views

I want to show the information of several layers of a request made ​​GeoJSON geoserver

Always enters the error function and shows me the alert 'what happen?'. This is the piece of code that causes problems: map.addEventListener('click',onMapClick); function onMapClick(e) { var ...
0
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1answer
55 views

Make two layers editable in leaflet draw

I use Leaflet draw to draw markers and polygons on a map. The created features are saved to two separate feature groups. One feature group for the markers and one for the polygons. Now I want to edit ...
0
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1answer
49 views

Using photon in a Leaflet code: example?

I need to put a geocoder in a Leaflet page and I'd like to uso Photon (rif. http://photon.komoot.de/). There is a leaflet plugin here https://github.com/komoot/leaflet.photon but no example is ...
1
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1answer
45 views

Leaflet circle radius unit?

Leaflet circle has two radius properties: _mRadius, which is the radius in meter, and _radius. Is _radius in radians or what is the unit of it?
0
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0answers
38 views

leaflet.js ImageOverlay projection bug

We are trying to display a image over the leaflet map using "ImageOverlay" layer, but it does not work according to expected. In Google Maps works perfectly. Apparently Leaflet just stretches the ...
4
votes
1answer
82 views

Show markers only at certain zoom levels

I'm building a cycle touring map in leaflet.js, with subjective information overlaid as markers, along the lines of "this is a great road", "this town is quite nice" etc. To avoid information ...
0
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1answer
82 views

How do I import a PNG as a TileMill layer?

I want to use the NASA "Blue Marble" images as the basis of a map tile set for a Leaflet.js map. It seems like using TileMill is the easiest way of building up my tiles, and opens a lot of options ...
2
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0answers
43 views

LeafletJS animated marker with video

I have used the leaflet.animatedmarker from openplans on GitHub to create a marker that moves along a line. I also have added a video that will popup above the line. This plays fine with the marker ...
2
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0answers
46 views

Leaflet Marker Dragend Bug/Difficulty

I am having a problem with leaflet markers. The problem is that when I drag a marker with a lower z-index under another marker with a higher z-index and let it go, it makes another marker. I have a ...
5
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1answer
146 views

How to handle the New ESRI Ocean Basemap

Some of you may have seen this recent (4/28/14) ESRI blogpost - The New Ocean Basemap. ESRI, in their infinite wisdom, has split up their Ocean Basemap into 2 separate services. One with just the ...
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0answers
183 views

Combining Feature Selection and Marker Clustering

I am using the basic structure for layer toggling found in this CartoDB tutorial, with buttons wired to a ul navigation menu. In the meantime, I was happy to implement the Marker Cluster Leaflet ...
5
votes
1answer
263 views

Generating Interactive Tiles using Nodejs, Mapnik, and PostGIS for Leaflet

I am looking to do something like this but where I have all the data on the same server. I've been following through the set of tutorials @ sparkgeo.com/labs/big/ and I'm having some difficulty. ...
1
vote
1answer
64 views

Why doesn't LeafletJS complete the conversion when re-projecting to Spherical Mercator?

When I use the Mapbox Leaflet pre-packaged Projection class SphericalMercator to project a lat/long coordinate into EPSG:3857 I have to multiply the result Leaflet provides by the earth's radius. ...
6
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0answers
48 views

Data Feed for Space Weather / Aurora

I am building a map application for a northerly area and would love to bring in a feed of northern lights prediction/probability (like below). http://www.gi.alaska.edu/AuroraForecast Does anyone ...
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3answers
234 views

Using geojson hosted on GitHub from Leaflet: it doesn't work

I'm trying to use a geojson hosted on GitHub (rif. https://raw.githubusercontent.com/cesaregerbino/DatiGeo/master/ScuoleTorino.geojson), from Leaflet. here you are my code .... My first ...
2
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0answers
82 views

Leaflet Drag and drop to change existing markers

I'm working on a project where the user should be able to drag an image to a pre-existing marker and have the marker update color if the value of the marker (a value w/in the geojson) and image (a ...
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0answers
27 views

Handling Popups in Leaflet with Overlapping Features

I am new to Leaflet as well as Javascript, and I'm looking for some advice on a basic topic. Currently, I am trying to create a spatial index of library holdings for old topographic maps that people ...
0
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1answer
30 views

Is there a widget/service to put a marker and send data?

I need to ask people where they want to go in the city, and as a response I need either geocoded location, or a marker on a map. Although everyone knows his home address, not everyone knows the ...
1
vote
1answer
109 views

Changing basemaps from cartodb.js

Is there a good way to change leaflet basemaps from cartodb.js or leaflet.js? I am able to grab the map object and basemap layer from the layers property in the done() promise. ...
2
votes
1answer
154 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
1answer
36 views

change content div on layergroup change

I have two layers in a LayerGroup that I can toggle between and would like to update a control(bottom left in example) with the grades of the currently selected layer. How can I go about doing this in ...
1
vote
1answer
73 views

getActiveLayers for LeafletJS

I'd like to identify the layers that are currently active (which basemap is currently in view and which overlays are currently turned on). Was hoping to find something akin to getActiveLayers in the ...
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0answers
102 views

Leaflet + proj4js + EPSG:2180

I'm trying to add a WMS layer in EPSG:2180. I get the definition for EPSG:2180 from here and I am using this guide on GitHub to make a new CRS definition, but I think it is corrupted. It is not ...
2
votes
1answer
74 views

How does one use leaflet layergroups with CartoDB layers?

I'm trying to use leaflet layergroups with a cartodb layer, ala: http://leafletjs.com/reference.html#layergroup but haven't been able to successfully do it. This is what I have so far: var map = ...
4
votes
1answer
156 views

Editing PostGIS topology in a web browser

I am trying to conceptualize the best process for editing topology from PostGIS in a web browser. Ideally what I would like to accomplish is the loading of a topology (imagine the lower 48 states of ...
0
votes
1answer
46 views

OpenLayers/Leaflet render world borders

I am trying to show all world borders. Either using OpenLayers or Leaflet. World borders are taken from here. This code does not work. What I am doing wrong? var Map = { map: null, layer: null, ...
3
votes
1answer
178 views

Leaflet add and remove legends with layer selection

I'm new to Leaflet/Javascript and have been struggling to get legends a map to show only when a specific layer is selected from the layer control. I have three layers, one of which I would like to ...
1
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0answers
37 views

Geoserver WPS - Tiled Barnes Surface with geospatial index

I'm using Barnes Surface to compute a set of points from my PostgreSQL db. The problem is that my whole table is processed for each tile. I added a geospatial index on my points, how can I tell ...
1
vote
1answer
61 views

Opacity contrl for mapbox map with several layers

This is an example of how opacity can be changed for a Mapbox.JS map: https://www.mapbox.com/mapbox.js/example/v1.0.0/opacity/ The example shows only one layer used. With barely any experience in ...
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0answers
80 views

Looking for mobile web app map control that can handle layer redraw with good performance

I want to develop mobile web app to track GPS coords in real time (refresh every 10 seconds) from geoserver. Currently I have desktop site I wrote in ExtJS 4 and it works pretty well (Openlayers + ...
1
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0answers
59 views

Leaflet marker cluster by Administrative boundary

Is it possible to perform clustering based on administrative boundary using the leaflet.markercluster plugin? How would I do that? I already have the boundary layer.
0
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0answers
63 views

drag and drop csv file and display map using leaflet js

I am new in php and leaflet js. I want to drag and drop .csv file in php and using the values of csv file, I want to display map using leaflet js. Can any one help me.
2
votes
1answer
53 views

Integrate Leaflet map into PDF

I am current in the process of writing a thesis. Being in the field of GIS it obviously involves some maps ;). While the whole world switched to interactive online maps, Universities still require to ...
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0answers
41 views

Leaflet JS - Polyline and getPopup

I would like to get the popup that was bound to a polyline but it seems that unlike marler objects, polyline do not have such method. Any suggestion ? Also, it seems that the 'popupopen' event is ...
0
votes
1answer
60 views

Leaflet Javascript: Layer Control Style in Internet Explorer Messed Up

[Update: Never mind. Got it. Will post the answer later. Thx] Please see this link: http://gisdev.clemson.edu/ffliestemp/ . Only in Internet Explorer the Layer's Control box/panel is expanded all ...
2
votes
1answer
75 views

Leaflet snap circle draw to marker

I am looking for ideas/libraries that enable snapping when I create a circle with leaflet draw. There is the libaray Leaflet snap, that enables snapping of draggable markers to polylines and other ...
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0answers
38 views

GeoJSON layer with local projection in Leaflet

I try to add a GeoJSON layer to my map in Lambert II projection. The GeoJSON contains few points. It don't work if the GeoJSON have more than 1 feature, but for 1 feature, it work ! I don't know why ...
1
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2answers
148 views

How to load big geo-data file into web application

I am building a web app where I show details in map. I load data using geojson file (190 mb). I was looking in different possibilities to show the data, here there are: Leaflet GeoJSon: it should ...
0
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2answers
56 views

Slippy map tile question and good practice

I have created a small slippy map (Leaflet) and have given it a bounding box. If the user tries to pan/slide outside the given bounds then the map bounces back. Also, the slippy map only has tiles ...
0
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1answer
298 views

How to add event listener to many markers on the map?

How can I add an event listener to many markers on the map? I know how to add an event listener to a single marker say: var marker = L.marker(...); marker.on('dragend',function(){...}); So, how can ...