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

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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 ...
0
votes
0answers
81 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 + ...
0
votes
0answers
67 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.
4
votes
5answers
1k views

How to get a Leaflet app with a big GeoJSON file to work on mobile devices?

I have a leaflet app which displays a GeoJSON file as a layer. It works fine in the web browser. On the mobile browser it starts up, but quits after panning around on the map. I think the reason for ...
2
votes
1answer
56 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 ...
0
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0answers
43 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 ...
7
votes
1answer
5k views

How to Add/Remove Legend with Leaflet Layers Control?

I have two overlays http://02d0c8c.netsolhost.com/dev/lcb_census_layers3.html that can be turned on and off with a Layer Control. I’d like the legend for each layer to turn on/off along with the ...
0
votes
1answer
61 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 ...
0
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0answers
39 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 ...
2
votes
1answer
553 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
151 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
votes
1answer
316 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 ...
1
vote
1answer
42 views

Query data without opening up database?

I have a bunch of polygon data that I want users to be able to sort/filter based on certain criteria. I have the data in a CartoDB table, and can pretty easily use some SQL calls to achieve what I ...
6
votes
2answers
186 views

Color-code a Leaflet polyline based on additional values, e.g. altitude, speed,

I'd like to draw a GPX-track on a Leaflet map. The polyline shouldn't have only one color, but I'd like to show certain values like altitude, speed, heart-rate, temperature, cadence, slope ...
1
vote
1answer
3k views

location of a dragged and dropped marker using leaflet

I am using the leaflet API with OSM. I need to implement a functionality where on dragging the marker and dropping it on user preferred location, I need to get its latitude and longitude and save its ...
0
votes
0answers
38 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 ...
0
votes
1answer
297 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
160 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 ...
1
vote
0answers
135 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
votes
1answer
101 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 ...
3
votes
1answer
302 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?
0
votes
2answers
127 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 ...
0
votes
0answers
58 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 ...
3
votes
1answer
709 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
488 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
vote
0answers
67 views

Leaflet toGeoJSON() keep leaflet_id

When I use the function .toGeoJSON(); is there way to keep the layer leaflet_id?
3
votes
1answer
161 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
148 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
0answers
82 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
votes
1answer
124 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
votes
0answers
120 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 ...
3
votes
1answer
108 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
71 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
votes
0answers
82 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 ...
2
votes
2answers
885 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
vote
0answers
73 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
390 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
277 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
130 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 ...
1
vote
1answer
114 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
votes
0answers
179 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
votes
0answers
56 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 ...
4
votes
1answer
755 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
505 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
votes
0answers
75 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
94 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
50 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
398 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
48 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
127 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: ...