Tagged Questions

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

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13
votes
5answers
1k views

Comparing two maps with nice web interface?

Is it possible in Leaflet or OpenLayers to compare two maps with a bar to slide between the two? Examples include: ...
2
votes
3answers
2k views

get latitude & longitude as per address given for leaflet

In my project I am using leaflet to display points. I am getting address from my database & want to show point for that particular address. I dident found anything which will give me latitude ...
3
votes
1answer
364 views

GeoServer 2.3.0 Proxy Setting

I've upgraded to GeoServer 2.3.0 running on Apache Tomcat 7.0.39 on my host WebFaction. My websites and GeoServer are on same host but different ports. How do I go about setting a proxy so that my ...
1
vote
1answer
224 views

TypeError in leaflet on zoom in or out

I am working on an application that renders land parcels from PostGIS as polygons in Leaflet. I have an event handler set for 'viewreset' on the map: this.leaflet_map.on('viewreset', ...
4
votes
3answers
689 views

Create buffer around point in LeafletJS?

I am using LeafletJS. I want to create buffer around point. after Selecting a point buffer radius will be specifed by user in feet. After searching of awhile I found this link of JSTS. does JSTS ...
4
votes
1answer
3k views

How do I add my own map layers to Leaflet

I have a Leaflet map and want to add two of my own small polygon layers (currently in shapefile format, but they could be converted to GeoJSON). Can this be done without a mapserver to publish them ...
4
votes
2answers
1k views

Leaflet offline tiles problem

I hate to ask this kind of questions, but i ve been stuck for 2 days now: I rendered some tiles with mapnik which i want to serve in my offline application which will run from a portable disk, but ...
2
votes
1answer
163 views

Value at a particular spot on Geoserver Heatmap

Geoserver is drawing from a PostGIS database to generate a heatmap using this SLD extension. Leaflet then overlays the heatmap over the base layer. Question: How can you determine the value at a ...
8
votes
1answer
906 views

Generating Heatmap from PostGIS

I have GIS data in a PostGIS data base and would like to generate a density map and display them on a Leaflet/Google Maps. Question: What is the recommended/typical method for doing so, without ...
2
votes
1answer
2k views

Leaflet - how can I call custom js after drawing polygon?

I want to draw a polygon on a leaflet map and afterwards send it to the DB and retrieve all objects that intersect that polygon. In Openlayers I did it by using custom function in "featureAdded:" ...
1
vote
2answers
377 views

Leaflet: maximum number of layers?

Is there a limit to have many layers you can have in a leaflet map?
0
votes
2answers
615 views

How to draw line in leaflet using postGIS road data

I have few points from server and I want to draw a line with this point on road. But the leaflet drawing point to point line as shown in picture in orange color. But I want to draw the line ...
1
vote
0answers
317 views

Leaflet: Linking a marker click event to an image

I'm breaking down my question into three parts. I am a beginner to Leaflet and to writing code. Currently, I have a JSON file with all of my markers linked to my map page. The idea is that every ...
5
votes
2answers
2k views

Leaflet Polyline with custom fill pattern

I'm drawing Lines with leaflet.js an have to create custom styled polylines. So i got various image files which should be like a repeated background image in HTML. So is it possible to give a drawn ...
1
vote
1answer
704 views

What is the best way to use Leaflet and Geoserver to highligh a feature after a WMS request?

I have a web map, and I'm hoping to make it interactive. The layer I have is reasonably large, at 15 mb in GeoJSON format 4 mb compressed, so I don't want to load the whole layer as one file. But, I ...
0
votes
2answers
1k views

label for circle marker in leaflet

I am able to add label to circlemarker like this L.circleMarker(points[i],{title: 'unselected'}).bindLabel('Destination').addTo(map); This adds label which appears on mouse hover on circle marker. ...
1
vote
1answer
447 views

Reprojecting coordinates and geoJSON in leaflet

I have a Leaflet map in default projection and a wms layer also in default (web mercator) projection. I would like to add polylines and a geoJSON layer to my map, but the coordinates are in EPSG4326. ...
2
votes
1answer
267 views

leaflet geojson contextmenu

I want to add a context menu on right click for various elements on my geojson layer (I'm doing a road map so on a right click on the road at any part I want to show the context menu). I've managed ...
0
votes
1answer
526 views

find route distance & time taken to travel between two points using leaflet

I am able to find route between two points using cloud mode & leaflet using this. CloudMade Routing with Leaflet: route is not displayed But I also want to find distance & time taken to travel ...
5
votes
1answer
5k views

Change marker icon on click using leaflet

I have a map with many (>100) markers on it. I would like to make it so that clicking on these changes the icon to a highlighted version. I've created two custom icons, one regular, and one ...
2
votes
1answer
1k views

leaflet show miles/kilometers

Googlemaps shows you how large an area is on a map by showing a small bar with the number of miles/kilometers at the bottem left. Does leaflet also support this somehow? I do not see it listed in ...
2
votes
1answer
2k views

Disable leaflet interaction temporary

How can I temporary disable zoming/draging the Mapview in Leaflet.js Tried so many ways but without any luck. It's important to make it temporary and I also need the option to enable again.
1
vote
1answer
829 views

create polylines with different colors in leaflet

I have one function which creates poly line & adds that polyline to map function makeRoute(e) { if(pointsSelection.length > 0) { pointsSelection.push(e.target.getLatLng()); ...
4
votes
1answer
2k views

leaflet geojson coordinate problem

I just started to play with leflet/geojson a little. But my coordinates are not rendered properly and I have no clue what is going on. My coordinates are: 52.23943, 4.97599. They work correct with ...
5
votes
2answers
202 views

Simplest way to make web maps with lots of shapes

I have some computed data about US Census blocks. I'd like to make a web map to display that data. I've searched around and found various tools, but I can't tell what is the simplest "lazy man's ...
6
votes
2answers
880 views

Tilemill Dynamic Tile Generation

I have recently used Tilemill and I wish to implement it for dynamic tile rendering.As I've seen an CartoDB doing in cloud system,they can query & generate dynamic tile for request with UTFGrid. ...
2
votes
1answer
2k views

select two markers & draw line between them in leaflet

I am very much new to leaflet. I have multiple markers plotted on my map in leaflet. now I have to draw line between two markers when I select them. Can any one help in doing this.
-1
votes
2answers
1k views

Adding the draw control in Leaflet

I'm trying to add the Draw Control availble in with the Leaflet.Draw Plugin I've downloaded the code and stored in htdocs and point my page towards the js and css libraries needed. The page loads ok ...
1
vote
1answer
822 views

leaflet layerGroup is rendered behind baselayer

I have several baselayers and overlays. Everything is fine except the lauerGroup is rendered behind the baselayer. First I define the baselayers and add them to a 'baselayer' variable. // base ...
-1
votes
1answer
248 views

How to properly use PostGIS with Maps

First time using PostGIS in an app. Target: - Get Heat Map of customers from address table using leaflet.js and heatmap.js Have DB called store_dev. Installed OSM Bright from Mapbox in it. Have a ...
0
votes
1answer
667 views

Geojson multipolygon doesn't work with Leaflet bindPopup?

I have polygon and multipolygon data in Geojson format and when I try to bind popup for polygon, it works perfectly, and when I try to bind it for multipolygon, it doesn't work. Is that some Leaflet ...
1
vote
2answers
247 views

converted SHP to geoJSON - how to put this on OSM map?

I'm a beginner at this. I converted a shapefile to a .js file but I am having trouble adding this data to a map using leaflet. The osmscarb.js: var osmscarb = { "type": "FeatureCollection", ...
5
votes
1answer
2k views

Leaflet and EPSG 4326 Projections

UPDATE: LEAFLET fixed support for EPSG 4326 (LL84) in the latest betas: https://github.com/Leaflet/Leaflet/issues/1207 Leaflet says it supports EPSG 4326 (Plate Carree, aka ll84) projections. I think ...
2
votes
2answers
570 views

Do the recent developments in the Google Maps API replace necessity of OpenLayers?

I think the main drawback of the Google Maps API is that we can't add our own vector data or raster imagery as one of the layers in the map. Is this correct? Or is there any alternative in the Google ...
2
votes
1answer
351 views

How to create a radius search in Leaflet

My objective is to create a radius search tools using Leaflet API. It will behave like how many POIs within the radius from a given point. Any tutorial or any blog forum link will be helpful to me. ...
2
votes
0answers
779 views

Projecting point in Leaflet from EPSG 900913 (same as 3857) to EPSG 2232 with proj4js returning unexpected results

I have a leaflet map from which I want to be able to query an api that accepts x y values in EPSG 2232 as inputs. Leaflet doesn't handle point transformations like Open Layers does so I am trying to ...
2
votes
2answers
344 views

How to visualize pgRouting layer in leaflet?

I have completed all the queries of the of pgRouting tutorial by Underdark where visualization was done with the help of RT SQL Layer Plugin. As I am using Windows OS I have no access of that tool. ...
1
vote
2answers
3k views

How to open popup menu on right click in Leaflet

I want to open a popup menu list on right click with Leaflet map. I have tried the ContextMenu of leaflet but couldn't do it. Here is the sort of code I used. map.on('contextmenu', L.popup() ...
3
votes
1answer
3k views

CloudMade Routing with Leaflet: route is not displayed

I am trying to consume the CloudMade routing API using Leaflet. So far, I have managed to pass points and receive a response, and parse that response into an array of points. The array of points is ...
2
votes
1answer
617 views

How to render points from CartoDB with Leaflet and Leaflet Vector Layers?

I have a table in CartoDB containing some points. I want to render these points dynamically with Leaflet. There is cartodb.js for such tasks, but it does not support full customization of Tooltips, as ...
1
vote
2answers
2k views

Leaflet with EPSG4326 Tile Layer (using maptiler.org)

I have successfully been using Klokan Petr Pridal's MapTiler (http://maptiler.org ) to take GeoTiff files and create TMS tile pyramids for Leaflet (option #1 which projects to EPSG3857, also called ...
1
vote
1answer
186 views

passing geocode results object to another file

I'm using a geocoding plugin (Leafet.GeoSearch) on a map and I'd like the results, being the LatLng point coordinates, etc available as a parameter for GeoServer cql filtered calls. It doesn't seem ...
1
vote
0answers
2k views

Having issues getting Leaflet “L.tileLayer.wms” to display Geoserver WMS data

I've set up Geoserver and WMS capabilities to host some weather data files (satellite data for example). Here's an example file: ...
3
votes
1answer
796 views

How to avoid corrupt geometries when translating between TopoJSON and GeoJSON?

I'm trying to display some geojson vector features on a leaflet map. The size of my GeoJSON is too big (25.4mb of data, 8.47mb gzipped), so I'm trying to use a TopoJSON format to reduce the size ...
0
votes
1answer
287 views

tools for sorting/filtering based on map state

Im about to embark on a project that list restaurants on a map. Id be grateful to find out what the best tools for the job are? The restaurants will be in a list beneath a map. The list will be ...
2
votes
1answer
773 views

GeoServer Callback Function Undefinded

Any idea why the function loadThis() comes back as undefined? I've tried adding jsonp: false which doesn't help either. The json object is returned properly, I can view it in FireBug, but I can't get ...
1
vote
0answers
105 views

Leaflet Call to GeoServer for GeoJson [duplicate]

Possible Duplicate: GeoServer Callback Function Undefinded I've gotten this far by following examples mentioned below, but I'm stuck. The URL returns the GeoJson file but it isn't getting ...
1
vote
3answers
974 views

Add TileCache Schema Layer to Leaflet Map

I am trying to get Leaflet to display a TileCache Schema tileset. One example: http://example.com/tiles/Admin/06/000/000/357/000/000/158.png As far as I can tell, Leaflet only supports TMS style ...
4
votes
1answer
1k views

Does Leaflet has option for scale dependent layers?

Is it possible to show layers with Leaflet depending on scaling? For example not show counties until zoom level reaches 10. Thanks.
3
votes
1answer
918 views

Leaflet WMTS layer

I would like to start using Leaflet instead of OpenLayers, but I can't find a way to load WMTS layer into the map. Is that possible with Leaflet, or do I have to stick with OL? I haven't found ...