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

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0
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21 views

How to use Leaflet CircleMarker with Leaflet Draw

I want to use the Leaflet CircleMarker function together with Leaflet Draw when a marker is put on the map. var drawControl = new L.Control.Draw({ draw: { marker: function ...
1
vote
1answer
135 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 ...
0
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1answer
53 views

Which are the Geojson css style properties for mapbox.js?

I try to style a LineString in a Mapbox Map through L.Geojson and all the style properties I could find are: fillColor, colour, weight, opacity. Does anyone know if there is something else? For ...
2
votes
2answers
86 views

where to host private cartodb/leaflet web app

I am looking for opinions on where to host my cartodb/leaflet map site. It needs to be private with authorized users and have a document management system. So, I was thinking sharepoint online 2013 so ...
2
votes
1answer
402 views

How to keep bound popups from opening on [click]?

I am working on a map application which creates and binds popups on markers and polyline objects. The popups are created and bound lazily, i.e. ad-hoc when a user clicks on a specific object. The ...
4
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4answers
150 views

3D perspective on maps in Leaflet, CartoDB?

Are there any JS library out there that would render normal, flat maps (like Leaflet) into a perspective map like this one, on the web: Also, anyone seen anything that could turn CartoDB data into ...
1
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0answers
31 views

Refresh leaflet marker data in place ? (on insert to sql db)

I have a form that sends data via ajax to be geocoded and inserted into a mysql db. Once that data is there, can I force the marker layer to refresh so that it displays the new data? The SQL API ...
-1
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1answer
57 views

how to use MBTiles4J

I got a MBTiles Server written in Java here. https://github.com/jtreml/mbtiles4j I am new to java. Can anybody briefly discuss how it works. I want to create an eclipse project with this. Specially ...
2
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1answer
108 views

Does Leaflet.js uses WebGL for drawing on HTML5 canvas?

If someone could explain how does the Leaflet.js library draws object (and map layers) on HTML5 canvas? Does it uses WebGL and its GPU accelerated usage of physics and image processing in any way?
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2answers
43 views

How to add a floating “crosshairs” icon above leaflet map?

While reading the article about MapBox's map utility to searching for flight MH370, I noticed that they have a stationary "floating" target (or crosshairs) icon that helps users identify the center of ...
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0answers
18 views

Drop Marker with 3857 projection in leafletjs

Is it possible in leaflet to drop marker with 3857 projection on map? I fond a solution where first translate point to 4326 using proj4js and than drop it on map. var source = new ...
0
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0answers
28 views

set map center in leaflet with 3857 lat/lon

I'm trying to set map center with lat/lon of 3857 projection in leaflet. By using lat/lon of projection 4326 its working fine. var map = L.map('map', { crs: L.CRS.EPSG3857 ...
1
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2answers
55 views

Start-Marker from geojson polyline

i have a map with some walking- and bike-routes and popups with a few details and a picture. Now i want to set a marker on the first vertex of a geojson polyline, but i cant find out how. Btw. i´m ...
1
vote
1answer
82 views

Change default leaflet marker color

I'm using esri-leaflet, and leaflet inherently to add a point feature class (geojson) to a map. What is the best way to add and style the layer? I've see pointToLayer on the leafletjs.com, but don't ...
1
vote
1answer
120 views

Which plugin can draw topoJson right within Leaflet without conversion?

I already have asked how to reduce file size and increase performance for publishing spatial data on the web using Leaflet, here. A conversion to TopoJSON has reduced the file size by approximately ...
1
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0answers
22 views

Leaflet toGeoJSON() keep leaflet_id

When I use the function .toGeoJSON(); is there way to keep the layer leaflet_id?
2
votes
1answer
115 views

How can I use Leaflet with esri-leaflet and ArcGIS Online services

I've used public ArcGIS Online services plenty of times in ESRI JS web apps and I imagine that using them as layers in Leaflet is pretty much the same. The one problem I can see is how would one ...
3
votes
1answer
133 views

looking for an esri compatible javascript engine

I work on an esri heavy team, i'm looking for a mapping engine that will give me flexibility to build on top of and leverage only the pieces I need and or add more as the app grows. I've been using ...
2
votes
2answers
1k views

Getting WFS data from Geoserver into leaflet

I'm trying to use a ajax call to load WFS data from geoserver into a GeoJson layer in leaflet. When I do the following message in the console: XMLHttpRequest cannot load ...
2
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0answers
33 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 ...
0
votes
1answer
44 views

Strange Leaflet Uncaught TypeError

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
1answer
55 views

Cache geodjango query with bounding box filter

Im using geodjango (postgis) to retrieve points contained inside a bounding box (made by leafletjs), it works so nice, but now I want to cache this query. A tipical query is one like this: ...
4
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0answers
47 views

GeoJSON shape distorted on Leaflet.js spherical mercator WMS map [closed]

I have a map with a simple WMS layer in spherical mercator projection (rendered by a OSM-Mapnik-TileCache server stack, everything is in EPSG:900913 / EPSG:3857). First: I can't understand why, if ...
2
votes
1answer
56 views

Leaflet - Change style on click

I am beginer with Leaflet library and I am facing an issue with a geojson. I have an extern geojson file (points) and I would like to display a circle for each point coordinates and get a bigger ...
1
vote
1answer
36 views

Get bounding box of WMS

Is it possible to request the bounding box of a WMS from GeoServer? In my case I have a WMS that I show with L.TileLayer.WMS in a Leaflet map. I like to center and zoom my map to the WMS.
0
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1answer
237 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 ...
0
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0answers
36 views

Updating Mapbox map to newest API/getting markers to load

I'm new to the Mapbox API (and to Javascript in general), so please bear with me. I am trying to build an interactive map that automatically cycles through map markers as the user scrolls through ...
1
vote
2answers
529 views

gdal2tiles.py generates wrong tiles / MapTiler the right ones

I'm trying to generate tiles with gdal2tiles.py and the resulting tiles are stored as 18/132639/164219. If I do the same thing with MapTiler (the GUI variant of gdal2tiles) the tile result is ...
1
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0answers
112 views

OpenLayers3 vs Leaflet for styling multifeature geojson

I'm experimenting with various options for displaying geographic information to the public in html format. The ultimate aim is to build an online application where anyone can add the route they cycle ...
1
vote
0answers
59 views

four color theorem for QGIS 2.0 or Leaflet?

I recently looked at some other posts relating to this topic but as far as I can tell there is currently not a working plugin or script for QGIS 2.0 to achieve a four color theorem for styling polygon ...
2
votes
1answer
98 views

Make sidebar div active on Marker click (and vice versa)?

What's the best way to change an element to active when you click on a marker. For example, when you click on a marker on a Leaflet map, how to make it so the sidebar element that's related to it ...
2
votes
2answers
225 views

Can Geoserver return the raster value of a lat/lon point

I have a GeoTIFF published by Geoserver 2.2 and being used by Leaflet via WMS. How can I get Geoserver to return the raster value at a lat/long point? I'm guessing it has to do with using WCS, but ...
3
votes
1answer
61 views

How to create leaflet legend for points

I have points like this in a leaflet map. The points come originally from a GeoJSON file and I used L.circleMarker to convert them to circles. How can I create a legend for these points? Based on ...
3
votes
1answer
583 views

UTM Grid as a Layer with Leaflet

How can I display a UTM Grid as a layer with Leaflet? Search a way to embed a OpenStreetMap map with Leaflet in a website. Particularity. I want to display a UTM Grid as a Layer. In addition, lower ...
1
vote
1answer
56 views

Reprojecting in postGIS from 900913 to 4326. Wrong coordinates

I'm working with postGIS 2.1 I have a table called 'xacementos' created with the srid: 900913. I took the points coordinates from google maps and I want to convert them to SRID:4326 to show the points ...
0
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0answers
66 views

Leaflet - Tiles stopped loading. Can't figure out why

Suddenly my map stopped loading tiles and I went on the leaflet site and downloaded the latest version of everything. ...still I could only make London visible with its latitude and longitude. I have ...
0
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0answers
41 views

How can I create Albers projection of Russia map?

I need a conic tranformation of map, so this code var map = L.map('map', { crs: new L.CRS.proj4js('EPSG:4326', '+proj=aea +lat_1=52 +lat_2=64 +lat_0=0 +lon_0=105 +x_0=18500000 +y_0=0 +ellps=krass ...
3
votes
1answer
190 views

Trigger a click event on a leaflet map?

Is it possible to make a click event occur at a particular lat/lon on a leaflet map? I would like to make a popup appear that is associated with a point at a particular location. I have tried several ...
4
votes
2answers
392 views

binding nested arrays as geojson popups in leaflet

I am struggling with geojson popups in leaflet.js I have nested arrays as properties for my features - an example would be counts of fish caught at a location (not my actual project data!) ...
0
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0answers
43 views

OpenLayers WMS to Leaflet with EPSG:2170 projection

This is the original code for OpenLayers 2 var res = [ 1000.0 / 4.0, 1000.0 / 8.0, 1000.0 / 16.0, 1000.0 / 32.0, 1000.0 / 64.0, ...
2
votes
2answers
43 views

Sending map extent in (geo)JSON

I have a leaflet map that I need to fitBound on a given rectangle. The coordinate for the fit bound will be transfered in JSON via a REST call on a server. We are using GEOJson to encode our geometry ...
0
votes
0answers
21 views

How do I only use a subset of features from Arcgis feature services in leaflet?

Is there a possibility to only use a selection of features based on an attribute from an arcgis feature service in leaflet? As you can set a query to a service, could this be done easily in leaflet ...
2
votes
0answers
131 views

How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane?

I have SVG on top of GeoJSON in my map. How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane while keeping GeoJSON in place in the leaflet-overlay-pane? (For example, how could ...
0
votes
0answers
26 views

Leaflet SVG layer is obscuring the underlying GeoJSON interactivity

I have SVG on top of GeoJSON in my map. How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane while keeping GeoJSON in-place within the leaflet-overlay-pane? (For example, how ...
0
votes
1answer
57 views

Display Leaflet Markers with UTM coordinates?

is it possible to display markers with UTM coordinates (zone 32) with leaflet and OSM? How can I do this? If I use UTM Coordinates like latlng, the position is totally wrong: ...
0
votes
1answer
63 views

Create Tiles for a raster(georeferenced) to use in leaflet

I have raster, with each pixel containing some data. What i want is to split a large image with each pixel's color is determined by its value, to show on leaflet layer.How to go about this ? raster ...
0
votes
1answer
30 views

I've installed OpenGeo Suite, how do I use it with Leaflet?

I've just finished installing OpenGeo Suite on my VM Ubuntu web server. I'd like to be able to use Leaflet from leafletjs.com to view my maps with on my mobile devices. I'm supposed to create an ...
2
votes
3answers
6k views

How to draw a polyline in Leaflet?

This is my coding I used in Leaflet: var pointA = new L.LatLng(28.635308, 77.22496); var pointB = new L.LatLng(28.984461, 77.70641); var pointList = [pointA, pointB]; var ...
1
vote
1answer
481 views

Slow tiles generation for leaflet js

I am currently trying to use leaflet to display images (jpeg or png) instead of maps, I have followed the instructions on this blog post to create the tiles using gdal2tiles.py here is the code we ...
42
votes
8answers
7k views

How to create Vector Polygons at the same amazing speeds GISCloud is able to render them?

EDIT (outlining new bounty added): I have added the largest bounty possible to this question in hope of getting a very detailed answer. Your solution should outline a step-by-step guide utilizing open ...