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

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6
votes
3answers
9k views

Creating a Bing and Google Tile Layer for Leaflet

I want to use the Leaflet Javascript Library to display both a Google and Bing Tile Layer, though I'm unsure how to construct the url. The documentation shows an example using OSM: var cloudmadeUrl = ...
1
vote
2answers
4k views

SelectFeature not working in OpenLayers

I'm still sort of new to openlayers, but I've been able to set up a map which reads in a KML, loops through the different regions contained therein, and draws those polygons on a vector layer overtop ...
13
votes
2answers
5k views

OpenLayers alternatives supporting more client-side features

I am considering different architectures for a system that will ideally use client-side rendering for point features and must be plugin-free. I have been using this application developed in response ...
0
votes
1answer
684 views

Purely client-side geocoding options for a webmap

I am creating a simple webmap that should be able to: Display external maptiles (any of the following: Cloudmade, Mapquest, Google). Overlay additional static layer in Geojson or KML format, that ...
2
votes
5answers
4k views

Event listeners after each plotting of a point of a Polygon Vector in OpenLayers

I am quite new to OpenLayers. I have a polygonLayer for users to draw polygon vectors. The plotting feature is working fine. polygonLayer = new OpenLayers.Layer.Vector("Polygon Layer"); ...
7
votes
3answers
2k views

Mobile offline mapping and editing of shapefiles?

I've got a client that wants to create a mobile app that can view and edit shapefiles stored locally on the device to enable it to work offline. There is a possibility of converting the shapefiles to ...
2
votes
1answer
762 views

ESRI - Polyline insertPoint issue (JS 2.5 API)

I am trying to basically draw a path on an esri map. with circles like so, but when I call Polyline.insertPoint it doesn't show the new segment: I keep adding points as time progresses. My ...
1
vote
2answers
843 views

How to create a custom Balloon for Google Earth?

I just came across one question related to google maps in stackoverflow. Google Maps: How to create a custom InfoWindow? I really like the popup that they mentioned in the question and the image is ...
2
votes
5answers
9k views

Why is this ExtJS combo box not filtering? [closed]

I am trying to place a combo-box in the top of my web application which will search an internal WFS from Geoserver. I am using the combo-box so I can have the "type ahead" functionality which I think ...
11
votes
3answers
2k views

Where can I find country borders data in human-readable format?

I'm trying to obtain some data representing the borders of all countries in the world. This data doesn't have to be very precise, it is to draw the countries on a computer screen. I did a bit of ...
5
votes
1answer
5k views

How to create a movable point in OpenLayers?

I have the following code: function mapCreate(lon,lat){ map = new OpenLayers.Map("map1"); var osm = new OpenLayers.Layer.OSM(); vectors = new OpenLayers.Layer.Vector("Vector Layer"); ...
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 ...
14
votes
8answers
12k views

How to Create Animated Cluster Markers in OpenLayers/Leaflet?

I want to use Leaflet due to the smooth transitions which Openlayers seems like they can't match. I specifically require the ability to cluster markers with custom styled marker groups. The best ...
1
vote
4answers
2k views

Map in an iFrame - open hyperlink from infoWindow in the calling page

I've got a Google Map being served inside an iFrame on a page (eg xxx.com/PageWithMap.html) The code for the Google map sits on another domain (eg yyy.com/MapCode.html) So it looks like this on ...
0
votes
1answer
737 views

How to highlight track in KML on hover with OpenLayers

I have KML layer with multiple tracks and I would like to highlight them individually on mouse hover. I tried to implement this like in the example found in OpenLayers examples, but couldn't get it ...
6
votes
1answer
416 views

Why do ArcGIS Desktop 10 HTML popups give JavaScript/HTML Error?

Using ArcMap 10 Desktop HTML Popups. The issue I am having is that the html < select > elements aren't working - you can select it and use the arrow keys to navigate through(up/down) the list but ...
5
votes
2answers
681 views

How to time function calls in OpenLayers?

We have an existing application that has a function that wraps the OpenLayers.Layer.Vector constructor, which gets its layer info from a KML source over http. Once this function completes, I need to ...
2
votes
0answers
415 views

GeoPDF Library for .NET or JavaScript

Anyone know of any open source .NET or Javascript libraries for creating GeoPDFs? I know of QuickPDFLibrary, but i'm preferably looking for something open source. I want to programmatically generate ...
4
votes
1answer
2k views

Changing the line color of a marker box using OpenLayers

I'm trying to figure out how to change the line color of a marker box in openlayers. I've been learning from the following example: <!DOCTYPE html> <html> <head> <meta ...
4
votes
1answer
512 views

Why is my polyline on the wrong bearing?

I am trying to overlay duplicate segments of polylines on a map via javascript. I am using latlon.js and geo.js from here The idea is that a user can input the distance they have travelled and when ...
1
vote
1answer
1k views

Invalid filter when using MapServer as a WFS

I'm trying to use Openlayers and Mapserver to display a shapefile. My HTML file is as follows: <html> <head> <title>OpenLayers Example</title> <script ...
2
votes
2answers
209 views

Is there a GroupRenderer in ArcGIS for javaScript?

Is there a GroupRenderer or similar functionality in ArcGIS for JavaScript? What I would like to do is to show PictureMarkers with a label showing an attribute on the Graphics object.
2
votes
2answers
2k views

Querying MapServer using WFS functionality

I'm trying to display a shapefile using OpenLayers and Mapserver. Instead of overlaying it as a png, I want to return a vector, in this case a KML file. My HTML file (located in the same folder as ...
3
votes
1answer
864 views

Why is Openlayers KML-layer undefined when using permalink

I am working on Openlayers to dynamically load KML tracks on map. I want it to load filtered KML everytime map is moved or zoomed based on viewport and zoom level. I got it working with code below, ...
6
votes
4answers
9k views

How to display mouse position as tooltip in OpenLayers?

I want map coordinates as mouse over effect in OpenLayers. I am using the following code, however it is showing pixel coordinates: map.events.register("mousemove", map, function(e) { ...
11
votes
4answers
2k views

Options for displaying PostGIS rasters in OpenLayers

This question is similar to an earlier question about displaying vector data in a web-map. I want to have a basic web interface which uses OpenLayers and can display raster data that is currently in ...
7
votes
1answer
1k views

How do we add a custom basemap in ArcGIS.Com that can be used in Javascript API?

It's possible to add a layer as a basemap in ArcGIS.com by checking the check box use as baselayer: But when I consume the map using: var mapDeferred = esri.arcgis.utils.createMap("<guid>", ...
1
vote
1answer
408 views

Finding the max. zoom level containing imagery at a point in Google Maps?

Is there a way to find the maximum zoom level containing imagery at a point in GMaps? I'm wanting to automatically zoom my map in as much as possible when a user chooses a point, but sometimes there ...
12
votes
3answers
4k views

Open source alternatives to Google's StreetView engine?

I am looking to create an open source javascript app using either Leaflet or OpenLayers. Is there any way to implement panoramic views (similar to Google's StreetView) into either of these, or any ...
4
votes
1answer
4k views

How to calculate Bearing between two GPS points

The following returns 150 degrees using C# converted from JavaScript Bearing formulas, but Google earth returns 210 degrees for the same values. The broken code is GetBearing() but I've also included ...
6
votes
1answer
2k views

Add a OpenStreetMaps road data layer on Google Maps API v3

I've successfully embedded a Google Maps API v3 map on my site, and added OpenStreetMaps (OSM) as the base layer. Is it possible to use Google's tiles as the base layer, and then overlay street data ...
3
votes
1answer
2k views

How to draw a line in OpenLayers?

I would like to draw a line between few GPS coordination. I tried to use OpenLayers.Geometry.LineString for that, but it uses a OpenLayers.Geometry.Point. Is there any function in OpenLayers that ...
1
vote
1answer
943 views

Toggling feature visibility in Openlayers + GeoExt

I'm setting up a small web mapping application using PostGIS + mod_tile + FeatureServer + OpenLayers + GeoExt, each of which I'm learning as I go. In addition to the base layer, I've pulled in a few ...
1
vote
1answer
312 views

Connecting geocoded point to an identify function

I am using the esri javascript api to make a web map. I need to use an address locator to geocode a point and then depending on where that point lands information populates a side panel. I am assuming ...
6
votes
2answers
4k views

How to navigate the REST endpoints and retrieve Field information programatically

I'm adding a Dynamic Map Service to an ArcGIS Server JavaScript API map, and I need to get hold of each component layer and its fields, so I can run a query. See the sample ArcGIS Server services ...
6
votes
3answers
853 views

Help needed using REGEXP for address string parsing

Using JavaScript, my aim is to create an "intelligent" address search function with a single textbox (rather than separate textboxes for house number, street name, street type, suburb, etc). I'm ...
2
votes
5answers
2k views

Convert geographic coordinates to UTM zone 29N with Javascript

I have an issue converting lat longs to UTM with the ArcGIS javscript API. Lets say that I have a map, based on the UTM zone 29N, also known as WKID 32629. I have a known set of coordinates from a ...
4
votes
1answer
162 views

Why does a cache service need to load first when a dynamic service is involved?

I notice if you have 2 services 1 cached and 1 dynamic you have to load the cache first for it to display. Does anyone know why?
7
votes
3answers
9k views

Draw a point with ArcGIS Javascript API

I am currently trying to draw a point with the ArcGIS Javascript API. Pretty much like this example, http://help.arcgis.com/en/webapi/javascript/arcgis/demos/toolbar/toolbar_draw.html, except the ...
2
votes
1answer
1k views

ArcGIS Server js api - buffer query against polygons and not points

I'm using the below sample and i want to change the queried results from points to polygons http://help.arcgis.com/en/webapi/jav...ry_buffer.html Probably very simple but cant get my head around ...
3
votes
1answer
566 views

Identify with Layer Toggling

I have spent some time reading the numerous threads about setting the identify task to work with layer toggling and I seem to have it working properly except for one small issue. The identify task ...
3
votes
1answer
259 views

Map and onKeyDown event

I have a web page with a map and search field. Something like Derek's "beer's finder" When I type a search request I somethimes use arrows to fix something. But if mouse is over the map, then I can't ...
3
votes
2answers
2k views

Open Layers Zoom On map single-click

I am trying to zoom into a location on a single click. How can I zoom towards the point on single click? I have tried using OpenLayers.Control.ZoomIn and adding a click handler, but for some reason ...
3
votes
3answers
6k views

How to dynamically update a KML layer in OpenLayers 2.10?

Arguably, this is a easy question for you guys GIS expert. Here is the question, how to outsource a dynamic KML file using JavaScript in OpenLayers. I want to refresh every 7 seconds. Below are ...
7
votes
1answer
1k views

Browser support for ESRI ArcGIS JavaScript API (v2.4)

Can anyone give me information or a good pointer on browser version support in the ESRI ArcGIS JavaScript API v2.4? I can't find much in their documentation beyond changes in support for specific ...
2
votes
1answer
237 views

LinearRing getVertices implementation

I'm fairly new to OpenLayers so please excuse me if this is an ignorant question. I'm curious why the LinearRing getVertices implementation getVertices: function(nodes) { return (nodes === true) ...
4
votes
2answers
2k views

Identify all layers on the map without pre-designing the infoWindow

This applies to the ArcGIS Server JavaScript API 2.4. The Identify Task sample shows how IdentifyTask can be used to find features in multiple layers, as specified in the IdentifyParameters: ...
3
votes
2answers
3k views

OpenLayers PanZoom control customization

I try to customize PanZoom control and have some questions. 1) What are OpenLayers.Control.PanZoom.X and OpenLayers.Control.PanZoom.Y constants? 2) Method "draw" takes "px" argument as input. I can ...
2
votes
2answers
172 views

Where can I deploy a JavaScript app for collaborative testing?

I'm developing a new ArcGIS Server JavaScript application, and I'd like to show the progress to the client, so he can provide feedback as I develop it. The application consists of an Index.html file, ...
3
votes
1answer
981 views

Proj4js objects not readyToUse

I am using Proj4js to transform between WGS84 and a local Swedish grid RT90 (EPSG:2400). It works in FF, but in IE the Proj objects often is not readyToUse when I need them to. I use this code to ...