JavaScript is a prototype-based, object-oriented scripting language that is dynamic, weakly typed and has first-class functions.

learn more… | top users | synonyms

6
votes
3answers
1k views

tiny JS discretization library for choropleth representation

I would like to know if a tiny stat/discretization js library ready to use exists. I do know about the existence of jStat (which I may explore a little bit more thoroughly), and I know that mapfish ...
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 ...
0
votes
2answers
158 views

Programatically adding popups into OpenLayers map

I'm developing a web service and want to inset multiple popups dynamically to a web page according to the request. What I did was this <script> //injected programmatically var popups=[]; ...
4
votes
2answers
14k views

How do you get the coordinates from a click or drag event in the Google Maps API V3?

I have made a Google Version 3 Geocoder , I want to be able to pick up the coordinates of the marker when it is dragged or clicked. Below is my code: <!DOCTYPE html> <html> <head> ...
0
votes
1answer
34 views

How to detect if a point lies inside a building?

My main motive is to detect if there's in any infrastructure nearby to a given point in a certain radius. For this I am using Places api and using nearbySearch method of it. The problem in this is ...
0
votes
1answer
51 views

Placeholder Text in search box - Cartodb

I am trying to add placeholder text to the Cartodb searchbox using the following DOM code document.getElementsByClassName('text')[0].placeholder='Search Your Constituency'; It actually does not ...
0
votes
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 ...
4
votes
3answers
461 views

ArcGIS Javascript API with Windows Authentication

I am using the ArcGIS Javascript API to consume a feature layer on an ArcGIS Server secured with Windows Authentication. I want to satisfy the authentication programmatically so the web user isn't ...
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 ...
1
vote
0answers
61 views

Geoserver WFS Fails to Load in OpenLayers

I'm working with Postgis->Geoserver->openlayers on localhost. I followed a Geoserver tutorial to import some nyc sample data into my postgres/postgis database and link it to Geoserver. The layer ...
1
vote
0answers
264 views

esri ArcGIS javascript api compatibility with Internet Explorer 7 and 8

I've developed a web map using esri arcgis javascript api version 3.8 and its not compatible with IE 7 or 8. I've advised the people who have reported this to update their version of IE but, if it ...
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
0answers
56 views

OpenLayers 3, Markers appear in different places when viewing with iPad

I have an OpenLayers3 map showing static map image an ontop of that a vector layer containing markers (features). The features display nicely when viewing the map on a laptop or a pc, but when viewing ...
0
votes
1answer
338 views

JavaScript API - Query and Edit point from Feature Layer

I am attempting to recreate the ESRI example for attribute inspections (https://developers.arcgis.com/javascript/jssamples/ed_attribute_inspector.html). I am having an issue when I create my feature ...
9
votes
2answers
2k views

How to add a layer to SelectFeature without losing existing selections?

I'm using an OpenLayers.Control.SelectFeature for selections on multiple layers. However, when I add a layer using setLayer(), my selections on the other layers are lost. Anyone know how to work ...
1
vote
0answers
38 views

Automatically update the result of a QueryTask

I have developed a application using the ESRI JS API to allow users to create and edit features in a web map. I have used the QueryTask to create summary statistics to report back to the user on ...
0
votes
1answer
233 views

How to add content below the map with Javascript? [closed]

Is it possible to enable some container below the map with JVectorMap? I have some links for all states which needs to appear when user clicks on state. I am new with Javascript so please help me. ...
1
vote
1answer
38 views

Calculations from Feature Server and display values

Using the ESRI JS API I would like to apply some basic math based on the Shape.area of a feature and then return that calculation to the web-page. I can't see any reference to something even remotely ...
0
votes
0answers
40 views

Insert a Mapnik Tile Between Google Base Map and Label Image

I'm currently using Mapnik to create choropleth tiles of regions in Brazil via node-mapnik by using the g.connector from Wax as in the code below and it works well. var map = new ...
1
vote
0answers
98 views

CORS Printing Issue with ArcGIS Javascript

I'm developing an application using the ArcGIS Javascript API and everything has been working fine until I've tried to incorporate the print widget using printtask. When only the base layers are ...
0
votes
2answers
130 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
147 views

OpenLayers modify selected feature

I am trying to modify an already selected vector (feature) in Open Layers. In my map i have implemented "select on click" functionality, so what i would like to achive is to have a "Modify" button ...
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 ...
0
votes
1answer
50 views

Passing variables through infoTemplate

I have a problem passing variables through infoTemplate. Its like there's something funny happening with the scope. Certain variables work but when I get too crazy with them my map doesn't load. ...
0
votes
0answers
85 views

IE8 Openlayers load thousands objects problem

My client works only with IE8. He has openlayers map that he want to load 3000 polygons on it. Chrome and IE9 can do this easily, but IE8 freeze. Objects come from web service as json xml , being ...
1
vote
0answers
68 views

Leaflet toGeoJSON() keep leaflet_id

When I use the function .toGeoJSON(); is there way to keep the layer leaflet_id?
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 ...
0
votes
1answer
50 views

How to Update Multiple Fields of one Layer Using WFS Service

Trying to update two fields of a shapefile using a WFS update service published from GeoServer 2.4.3 with OpenLayers 2.13.1. I have a JavaScript with all the OpenLayers fun and a HTML document with ...
3
votes
1answer
119 views

Loading multiple feature types as one layer in OpenLayers

I have a kml file which contains some polygon and some point features in the same file. I am trying to load and view this layer on my basemap in OpenLayers. The problem is that the polygon features ...
1
vote
1answer
299 views

Custom ArcGIS GraphicsLayer (JavaScript)

I am working on an application that will retrieve data from various sources and construct ESRI GraphicsLayer objects from the data and display it on a map. I have created custom FeatureLayers before ...
0
votes
1answer
68 views

How to display drawings from ArcGIS on Google Maps using JavaScript or PHP?

my client has ArcGIS installed on his PC and he has designed roads, hospitals, houses, and parks of a specific area in ArcGIS he needs his system online. challenging task for me is how can I get ...
2
votes
3answers
79 views

Dojo Slider to control tiled map services

am creating a web map to show Sea Level Rise in my County. I want to use a Slider for a user select the increment of Sea Level Change that wish to see. I have been able to create Programatically ...
0
votes
1answer
202 views

How to use cartodb.js with API key for privacy of data

I would like to use cartodb.js in my web page reproduce a visualization that I created at CartoDB. But I want to keep private my visualization and data at CartoDB (and I am going to secure my web ...
1
vote
1answer
28 views

multiple users on one wms layer - style and filter

I am using geoserver to show Points data from MySql in OL. The data saved in one table for all the users - 'Points' with a geometry field and Id of the user. I want to be able to let the users to see ...
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 ...
1
vote
4answers
374 views

Formula to Check Latitude & Longitude is within Area without Google Maps Api

I got this Example Map SampleMap: http://techinfo.co.id/test/map.php I make Boundary Polygon shape , -6.875165174925262, 107.56293296813965 -6.882663904407988, 107.66730308532715 ...
0
votes
1answer
228 views

Call function inside dojo.ready

I have code ArcGIS Javascript like this: <script type="text/javascript"> require(["dojo/ready", "dgrid/OnDemandGrid", "dgrid/Selection", "dojo/store/Memory", ...
2
votes
0answers
29 views

GeospatialPDF javascript access

Using javascript in GeospatialPDF, is it possible to zoom in to an extent, say when the document is opened the first time ? To what extent can I use javascript to access the geospatial data? pan, ...
0
votes
0answers
55 views

How to reorder KML layers in ArcGIS API for JavaScript?

How do I reorder KML layers in Esri ArcGIS javascript version? I want to be able to reorder the order of the rendering of layers. I tried this._map.reorderLayer(kmlLayer, 0) This did bring the ...
0
votes
1answer
95 views

OpenLayers snap to road

i have some marker on my map, and i am trying to draw line between the marker but i want it follow the road ,when i used Google map i follow this example... ...
0
votes
4answers
131 views

Web Mapping using the ESRI Javascript API

So I've been tasked with coding the interactive map for the city I'm interning at. I'm still a beginner with Javascript but I learn best "one the fly" by just getting started. I just need to know how ...
2
votes
0answers
182 views

It is possible put highcharts chart in openlayers popup?

As title. I build a openlayers map on my website. and there are many feature vector on the map. now I want to put a highcharts charts in popup. to show the temperature in every city something Like ...
5
votes
1answer
766 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
votes
0answers
42 views

Bounding the Google Maps Search area to my Fusion Layer area?

I have a searchable Google Fusion Layer of Glasgow Postcodes that highlights the searched areas on a map. The search works fine if I enter a full postcode (for e.g. G1 1BL) that matches the data in ...
2
votes
1answer
330 views

Cartodb - SQL query of public visualization of a private table

The team at CartoDB have recently(last few days) made some useful updates that now allow public visualisation maps to reference data in private tables. The change has only been made in the last day ...
0
votes
0answers
26 views

ESRI Mobile Javascript API Click Events not happening on mobile devices

I have a a map with a couple of feature layers. Using a mobile popup to display attribute data of graphics when you select them. Everything looks great on the desktop. However, when you get to any ...
0
votes
0answers
50 views

ArcPad Jscript ThisEvent.Object, autofill form with multiple pages

I have a script that I'm trying to use to autofill the controls of an ArcPad form with controls on multiple pages. The 'autofill()' function is referenced in the form's onload event and I would like ...
1
vote
1answer
80 views

Jsonp call to geoserver

If I try, like this way: $.ajax({ jsonp: false, jsonpCallback: 'getJson', type: 'GET', url: ...
1
vote
1answer
70 views

How do you export features in OpenLayers 2.13?

I'm new to OpenLayers (2.13). I saw in the example section that it is possible to draw features like lines, points and polygons. http://openlayers.org/dev/examples/draw-feature.html Quite ...
6
votes
4answers
4k views

How to get JSON from Geoserver using AJAX request

I am building a web mapping application using Leaflet and a sort of customized WFS-T API to place and retrieve features from PostGIS. I have the script for putting features in PostGIS tables down ...