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

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19 views

KML- plugin for Leaflet using high-DPI devices

I've recently added KML overlays using leaflet and kml plugin by Pavel Shramov. Everything works fine on my desktop computer, but from a retina display and other mobile devices with a higher ...
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1answer
24 views

How to keep selected layers on page load in Leaflet?

I have a leaflet map that reload page and map view depending on a drop-down list. I have many layers in it and I'd like to keep selected layers as selected when the page reload after clicking on an ...
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0answers
40 views

Add ArcGIS Online web map or layer on top of Google Maps?

How is it possible to draw ArcGIS Online resources (such as FeatureLayer) on top of Google Maps in a web application? I don't need any working code right now, just trying to figure out if this is ...
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1answer
37 views

How to display the attribute table of the map using leaflet

I'm developing a leaflet application. for that i want to display the attribute table of particular wms layer using leaflet. Is it possible how can we do that? Thanks in advance.
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0answers
17 views

stop leaflet.heat from redrawing on zoom

I'm working with leaflet.heat, which redraws the heat map based on the zoom level. Best I can tell, it resamples the points within the extent of the map and redraws based on the intensity of the ...
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2answers
138 views

Adding Multiple JSON Layers to Leaflet Map

I'm trying to put two different json files over a single map. One is drawn by zip code boundaries, the other is county. For some reason, I can't get my leaflet to work. IF someone can help point me to ...
6
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2answers
4k 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 ...
0
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1answer
63 views

Convert Leaflet WMS layer to Leaflet GeoJSON layer

Using the Leaflet API I am adding a WMS layer through the L.tilelayer.WMS feature. This feature includes only a certain amount of options such as 'layers','crs','style' etc. Through the Leaflet ...
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1answer
28 views

how to customise toobar in Leaflet.Draw plugin?

I Down load the Draw.js and one ccs file to get use of the Leaflet.Draw plugin now need to customise the toolbar(i.e want only polygon and marker)
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0answers
25 views

Leaflet control to display scale in native/declared CRS (i.e. degrees)

I'd like to have a Leaflet map display the scale of a layer in native coordinates (i.e. degrees in EPSG:4326). From what I have read so far the map control always handles meters; is there a way to ...
1
vote
3answers
92 views

What are the low cost options for converting FLEX API based web mapping applications to any other platform?

As flex is reaching the end of its life, I have one project to convert Flex based web mapping application to any other possible solution with minimum development effort and secure way. I believe Dojo ...
0
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3answers
98 views

How to load geojson from geoserver to define a variable in leaflet?

How can I load a geojson file from geoserver in leafletjs? There are lot of suggestions out there, but none of them work for me. Currently my app loads a js file from the server that starts like ...
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0answers
88 views

Rendering TopoJSON in Leaflet from GeoJSON PostGIS output?

I'm using the query found here SQL query to have a complete geojson feature from PostGIS to get a geojson that I can display on a leaflet map. However, the amount of data is kinda big and the ...
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1answer
51 views

L.Polygon getting distorted when panning a map

I am using Mapbox with leaflet. I have drawn a simple polygon with a hole inside that polygon. I have done this using L.polygon and passing an array of points inside it and another array in reverse ...
1
vote
1answer
102 views

Leaflet custom div & click propagation on other elements

I've gotten custom HTML applied successfully within my #map element (where Leaflet is appended) but I'm having unusual behavior with other Leaflet objects that find themselves within the transparent ...
1
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2answers
3k views

How I can load tileLayer in Leaflet framework using local tiles?

I'm using file:///C:/path/tiles/{z}/{x}/{y}.png like url of tileLayer but it doesn't work and no error is shown. var layer = new L.tileLayer("file:///C:/OSM/tiles/{z}/{x}/{y}.png", { minZoom: ...
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0answers
49 views

Turf buffer on polygons

Is it possible to use Turf and place a buffer on a point and aggregate a field from polygons? Say I have two geojson layers in a Leaflet map. One layer is polygons for small areas with population ...
0
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1answer
119 views

Leaflet map - custom markers from CSV and referring to CSV / GeoJSON marker properties?

I run a non-profit online resource called the Megalithic Portal and have created a Leaflet map that uses Leaflet.geoCSV to load in points from a CSV file github.com/joker-x/Leaflet.geoCSV To see ...
4
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1answer
197 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 ...
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0answers
10 views

Code for displaying a layer on the map from an external GeoJson file [duplicate]

Can anyone please help me with the code for displaying a layer on the map from an external GeoJson file that is stored in the same directory as my html page and for retrieving the GeoJson file from ...
4
votes
4answers
6k views

Sizing Leaflet Map inside bootstrap

I have been trying to change the height of my leaflet map to a percentage inside of bootstrap but everytime I do the map will not draw. Thus, I always have to revert to px value. I'm pretty sure its a ...
0
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1answer
32 views

Retrieve polygon attribute when positionning a point - openlayers / leaflet

Using a client-side webmapping library (openlayers3 or leaflet), I want my user to be able to add one marker on the map. I will then be able to retrieve long/lat coordinates. From that, I want to ...
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1answer
88 views

Does Leaflet layer 'add' event not fire properly?

A popup won't open until the data file has loaded and the layer is added to the map - that's pretty obvious. I figured it would help to bind it to the 'add' event - but that never fires: var l1 = ...
3
votes
2answers
2k views

How do I project my WMS tilelayer in leaflet if I want it to display as an overlay on my basemap if they have different EPSG?

So my basemap is a world Mercator projection and in wfs format and I'm trying to put a WMS overlay in a different projection over it? Leaflet's API didn't give me much info on changing the epsg so is ...
1
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1answer
64 views

Is there any method to retrieve SQL queries into a GeoJSON file using JSP?

I want to display the contents of my PostGIS database of various shape-files in leaflet pop-up dynamically. I know there are static methods available that retrieves attributes. But I need to by ...
0
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1answer
53 views

Multiple GeoJSON Layers

I have a leaflet map of the US and I would like to toggle between zip codes and county shapes. There seems to be no tutorials on how to achieve this in the documentation or an other forums I'lve look ...
0
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1answer
77 views

Trying to bind pop-up in leaflet via GeoServer GetFeatureInfo. Is there anything wrong in my code?

Simple Leaflet Map <script src="js/leaflet.js"> </script> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> ...
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2answers
39 views

Disable feature popup when creating new simple marker

I have a leaflet map with some loaded polygon layers. When using the Simple Markers plugin, i would like to create a new marker on top of an already existing polygon feature, but i can only click the ...
2
votes
2answers
422 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 ...
0
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1answer
24 views

use a global geoJson layer in leaflet

i´m using getJSON to draw points in leaflet, this is the code: function cargarpapes(movibles){ $.getJSON("papeleras1.php", function(data) { papesjson = L.geoJson(data, { ...
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0answers
95 views

Use leaflets to display svg floor plans

How can we use the svg image as map? I have the floor plan of svg format and i need to track the location of employees. How does leaflet allow to integrate the coordinates of map and the lat lng? Can ...
7
votes
4answers
3k views

How do I stop event propagation with rightclick on Leaflet marker?

I didn't find a rightclick event in Leaflet markers so I started listening to the mousedown event. In the method that resolves this event I check if (event.originalEvent.button == 2) { ...
0
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1answer
130 views

Leaflet Draw on Mobile - creating a marker

So I made a simple leaflet map that has the Leaflet Draw plugin. I am only allowing users to add a marker. Leaflet is supposed to be mobile friendly, but when I open my website in a smartphone ...
0
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1answer
100 views

How to bring my PostGIS map from GeoServer to Leaflet based web application?

I have created a group of shape-files using QGIS and I have stored their corresponding information in PostGIS database by importing the shape-file into pgAdmin3 using shape-file and DBF loader. Then I ...
1
vote
1answer
104 views

How to add GeoJSON layer with GraphHopper?

I have a GeoJSON file containing some POI that I would like to be able to display within a separate layer with GraphHopper. But after several tries and search over internet, i can't manage to get a ...
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0answers
67 views

Leaflet application with geojson IE9 error

Help.. My applications doesn't work in IE10 or IE9. It's fine in IE11, FF, Chrome, Safari etc. The error must be in the geojson featurelayer function, since removing it (row102-151) fixes the ...
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0answers
36 views

Is it possible to put a raster layer on a shifted Chinese basemap using leaflet API?

Recently, we want to develop an application with leafleat and gaode basemap because some features of these products fullfill our basic needs. We want to overlay some raster layers caculated by spatial ...
0
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1answer
100 views

How to open a popup on Marker click when Markers are in array using leaflet maps

Hey guys I have a set of Markers that are getting created dynamically on a .each loops like so. $.each(data, function(index, element) { markerArr[element.id] = ...
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0answers
92 views

Adding a layer switcher using cartodb.js

I am trying to add the layer control (L.control.layers) to an application using cartodb.js (v. 3.14). The last line in the following code L.control.layers(basemaps).addTo(map); breaks the entire ...
0
votes
1answer
277 views

Leaflet Marker Cluster not appearing

I would like for my points to cluster using L.markerClusterGroup. I am receiving a 200 status; but nothing appears on my map. I have commented out my markers which appear when uncommented. ...
1
vote
2answers
2k views

Loop over features of a GeoJSON object from CartoDB

I have just little knowledge about HTML and JavaScript. Nevertheless I was playing, copying and pasting around with Leaflet and CartoDB. I want to display the features GeoJson in a table. This is ...
1
vote
1answer
62 views

Custom HTML Within Leaflet Map

We're upgrading our Leaflet maps to be larger on the screen and doing so in part by putting information panels, etc. over the map with varying transparencies. Obviously this is easy to do by ...
0
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1answer
83 views

Is there a Leaflet for Dummies or Leaflet 101

I am very interested in learning leaflet, but I am not a programer nor a cartographer. Is there any LEAFLET for DUMMIES course that I can take?
0
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1answer
49 views

removeFrom(map) doesn't work

omnivore.wkt.parse("${feature}").removeFrom(map); I select features by this line omnivore.wkt.parse("${feature}").addTo(map); but when I remove from map doesn't work this code works but if I ...
3
votes
2answers
490 views

How do you get the nodes of an area in Overpass API in the “right” order?

I use the Overpass API to get the boundary of an OSM relation. I then use the result to display the boundary on a leaflet map. My problem is however, that the nodes are not in the "right order". ...
6
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4answers
637 views

How to use Leaflet to efficiently show parts of a massive dataset?

I keep seeing non-GIS web developers running into this problem, and I'm not sure what the solution is. There is some dataset of thousands of items. We want to show a map to the user, with the ...
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2answers
159 views

How do I embed the a Leaflet map into my web page, using QGIS2Leaf?

I am generally new to web developement, and web gis for that matter, but I want to embed a leaflet map that I made in QGIS using the QGIS2leaf pluggin, into the html of my webpage, but am having ...
1
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1answer
427 views

leaflet-omnivore style function

Please pardon my ignorance in advance, but is it possible to style a layer(polygon) using the plugin leaflet-omnivore? All of the examples I've encountered are using the MapBox API I have the layer ...
0
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1answer
131 views

Leaflet.js map - Pan too and Zoom in on point

This is the first time I am using Leaflet.js. I am trying to create a story map but have come across an issue. Currently I have a map with a scrolling text bar on the left hand side. I would like ...
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0answers
61 views

Loading lots of points on leaflet through time slider.

I'm trying to add more than 13 thousand point using Time Slider plugin, but as you can imagine the loading process of all these points puts a heavy burden on the map. Even the slider start to get ...