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

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2
votes
1answer
676 views

Connect JSON to GeoExt Application

I am returning a JSON to a GeoExt app and this is the code that is collecting the return, var control = new OpenLayers.Control.Click({ trigger: function(evt) { ...
1
vote
2answers
701 views

Problem with panning and zooming in OpenLayers

I'm interested in detecting when a user moves or pans a map so that I can run a new query on a database based on their location. However, the following code causes the panning and zooming controls to ...
2
votes
2answers
2k views

Openlayers: How to highlight a point on mouse over a line

Any suggestions on how to highlight a point on mouse over a line, I've read points from a javascript array, lines are drawn by using them and I want to highlight some points in that array by moving ...
0
votes
2answers
4k views

Differences between ExtJS and Dojo Framework

I have been using OpenLayers and the ESRI's JavaScript API and found that both using different set of JavaScript libraries have some implications on the quality of application that they deliver. Dojo ...
1
vote
2answers
5k views

How to get GeoJSON features using OpenLayers?

Can anybody explain how to get geojson features .Can somebody show way to get attributes from geojson text. OpenLayers.ProxyHost = "/gt/proxy.cgi?url="; var lon = 5; var lat = 44; var ...
3
votes
8answers
12k views

How to create an interactive map with jQuery and HTML?

I want to develop a map in JQuery and HTML. It needs to show world country borders. It must be enabled mouse hover effect and also popup (when mouse over) in which I can add my own text. What JS ...
1
vote
2answers
731 views

Handling points in openlayers

I have a several hundred points that I am showing on a map. At the moment, my method of adding the points seems inefficient. I create an array using the following approach: var features = [new ...
0
votes
1answer
275 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. ...
0
votes
3answers
2k views

OpenLayers: Error message 404 (Not Found)

I've created a map using openlayers contains osm, google layers and some vector features, On loading it shows two errors like: GET http://tile.openstreetmap.org/0/0/1.png 404 (Not Found). How to ...
3
votes
2answers
4k views

Detecting map changes using Openlayers

Is it possible to delete a vector layer when a user pans or zooms a map? I saw in the documentation that there is a function called onMapResize. Can this also be used to detect a pan change? I want ...
2
votes
2answers
1k views

how to buffer inside a polygon in Javascript

I'd like to know if it's possible to buffer a polygon on the INSIDE only using OpenLayers and other Javascript tools (e.g. jsts). Here's what I found about the topic in general: Buffering INSIDE a ...
12
votes
6answers
19k views

OpenLayers - redrawing map after container resize

In my web application, I want to enable users to set the size of the map container. Everything worked fine when the container was expanded slightly (apparently this is because the tiles that were ...
1
vote
1answer
153 views

Using AndNav tiles storage as input for OpenLayers.TMS

Is there a possibility to use map tiles from AndNav (created wit Mobile Atlas Creator) that are in format: Mapnik\12\2241\1369.png.andnav (I know that 12 is the zoom level but don't have idea what is ...
0
votes
2answers
412 views

How to change a marker on click

I've crated a map and tried, but it doesn't change until another event is caught or zooming map or by switching the browser tabs. What is the reason for this. please help me I've fiddle the code here ...
1
vote
1answer
2k views

map extent to show specific country

I use openlayers in my web app.I want to set map extent on specific country to show cities of that country but i don't know which option of map can show specific country in map!. How can i show ...
2
votes
2answers
2k views

How to skip drag event to stop a feature being dragged

I am new to OpenLayers and I'm trying to drag markers and skip some markers from being dragged, I've tried dragFeature.deactivate(); it will deactivate entire features please help me. Please check ...
1
vote
1answer
126 views

Thematic maps on Non Spatial Data in MapGuide

I need to create the thematic map on a polygon layer. But the data is not available in the layer; I am using Postgres database for that. It means I need to create the themes on layer using non spatial ...
1
vote
0answers
23 views

Show vehicle traveled route as animation [duplicate]

Possible Duplicate: Animate feature in openlayers I create map web app with openlayers and yii php framework. I want to show vehicle traveled route as animation like below site in my ...
2
votes
0answers
398 views

Creating a Geodesic Polyline Buffer in OpenLayers

I have a feeling that the answer is going to be 'You can't do that without some very complex coding' but I thought I'd go for it anyway. I recently asked a question on how to create a Polyline Buffer ...
1
vote
1answer
1k views

OpenLayers : Map not loading

If i use a single wmslayer as map baselayer it loads the map, but adding different layers like (google,yahoo) to map it won't works. Can anyone tell me how to overcome this.. thanks in advance.. ...
1
vote
0answers
636 views

OpenLayers: Click event to display position shows Uncaught TypeError: Cannot call method 'getLonLatFromPixel'

I have created a map using openlayrs, and put a click event to display its position in screen, when i clicked got an error message like Uncaught TypeError: Cannot call method 'getLonLatFromPixel' of ...
2
votes
1answer
426 views

Query a polyline layer using arcGIS's Javascript API

I'm attempting to query a polyline layer using the ArcGIS Javascript API I all ready have a lot of experience doing this with Point layers. So I set my Polyline layer up the same way and stopped and ...
1
vote
3answers
2k views

Label in the middle of linestring in OpenLayers

Is there anyone can put label in the middle of the linestring dynamically? I've used labelAlign option. I've changed this value from bc, cc, cm, etc. But it doesn't work at all. There's also option ...
1
vote
1answer
490 views

OpenLayers ModifyFeature for multiple layers

Is it possible to configure the ModifyFeature control to edit features in multiple layers?
6
votes
1answer
793 views

What does maps.nokia.com use?

The maps on maps.nokia.com are pretty amazing. I assume they're generating their own tiles but, does anyone know about the infrastructure behind site: the tile server used? and their JavaScript ...
2
votes
2answers
2k views

Animated lines and line styles in Javascript

I'm using Leaflet library and Mapbox. I need to create animated line from one city to another, slow motion "travelling" from one point to another point. Is that possible in javascript and how? I can ...
14
votes
1answer
481 views

Are there any Javascript map labeling engines available?

Does anyone know of a javascript library containing functions that would allow me to generate labels for points on the map so that the labels don't overlap one another, and have optional leader lines ...
4
votes
2answers
4k views

Clickable points with openlayers

I'm trying to have some very basic functionality with vector points with Openlayers 2.12 and I can't figure out how to track a click event on a point. I create a map using the following code and add ...
3
votes
2answers
1k views

Getting json feature id on OpenLayers

I'm projecting some features using json format on OpenLayers. I need to get the id from the feature (not the OpenLayers' id but the one in the json file). The file looks something like this. ...
4
votes
2answers
12k views

Calculate bearing between two decimal GPS coordinates

I'm building a virtual tour application that uses custom panoramas in conjunction with Google's StreetView service. With StreetView, you can have 1 to n links at each particular location to move to, ...
1
vote
1answer
157 views

File Upload with GeoEXT FormPanel

I have a GeoExt form and want to do file upload here. But i never work with GeoEXT. I have this. buttons: [{ text: 'Загрузить', handler: function(){ if(fp.getForm().isValid() && ...
4
votes
1answer
264 views

How to generate xml for use with geoxml3

I have a kml and shp I would like to convert to an xml to use with geoxml3. How would I go about doing such a thing? The xml I generate should look something like this: <?xml version="1.0" ...
1
vote
1answer
569 views

Draw svg-circle on a coordinate with polymaps

I'm making a tracker system which uses polymaps to display a satellite image. The code is copied from the bing-example on the website of polymaps. I now want to periodically call an update function ...
1
vote
1answer
482 views

Set attributes for newly created features in OpenLayers

I have a vector layer and label: "${title}" is used as one of style property for its rendering. Is it possible to set feature.attribute.title property before feature will be drawn by DrawFeature ...
3
votes
1answer
318 views

How to draw line by scratching on map using OpenLayers?

Is it possible to draw line by scratching on the map using OpenLayers? I tried some examples, all the examples are drawing by clicking. I want to draw by scratching, just like drawing in normal life ...
-1
votes
1answer
194 views

Map not displaying from Javascript using fusion table

I have this javascript which I am working on but the map in the HTML is just not displaying. I have a similar fusion table with layer_1 which is displaying fine but when I put layer-2 instead of ...
1
vote
1answer
2k views

Override infowindow Zoom To function or fire second event using ArcGIS JavaScript API?

The Popup of ArcGIS JavaScript API has a 'Zoom To' link on it that zooms you 4 levels closer to the linked feature. I'd like to fire another event after the default zoom to function executes. ...
1
vote
0answers
622 views

Multiple Google fusion table layers with queries using javascript

I am making a web mapping application using Google fusion tables and JavaScript. Earlier I had only one Layer on it, but now I have to put another layer. Both the layers have bunch of queries. I am ...
2
votes
2answers
201 views

Using DrawFeature to draw a line between features

I have a DrawFeature control that I want use to draw a line between two features (on a separate layer from the lines). I use a Snapping control to snap the cursor to the features. Any ideas on how ...
6
votes
1answer
315 views

Trigger geocoding without having to visit page

I'm using Google's geocoder to store results in database then display them on a map on another page. The problem is that each company profile page needs to be visited before it's geocoded. Is there a ...
2
votes
0answers
885 views

Dynamic Contour generation and project on google maps

Is it possible to generate contour map layer at runtime and overlap or project on google maps. I am using google map api v3 and want to generate contour map layer using data from sql server and ...
3
votes
1answer
175 views

software architecture for creating routes?

I have a system that can alert staff by email if their device goes into/out of a geo-zone However, we now need to create a route, and then email if someone goes off this route Technically, how would ...
5
votes
2answers
545 views

Can overlays have different resolutions from the base layer?

I am trying to show a regional map on top of base map but without success. While debugging I noticed that my regional map has a different set of resolutions from the base. Is this allowed in ...
2
votes
3answers
563 views

How to pull lat/lng from a map canvas and update a database

So if i want to pull out lat/lngs after user clicks on a map canvas (lat/lngs are pulled using any javascript API (leaflet, wax etc.) and add this to a postgresql database using a query, how do i do ...
4
votes
1answer
764 views

Authentication in geoserver with openlayers

Is there a way to authenticate in geoserver with a external webpage (made with asp.net and openlayers)? I have restricted the access data only by certain users, and I don't want to authenticate this ...
3
votes
1answer
2k views

How to curve lines between points on a map?

I'm trying to curve the lines between points on a RaphaelJS map like Tata Communications - but how did they do it? What sort of mathematics lie behind these curves - unless ofcourse they're all ...
0
votes
0answers
759 views

Plot poly-lines between few points in D3+Polymaps

I would like to create polyline on the click of the mouse. I have 4 circles 3 with radius 2 (Lets name it as B,C,D) and 1 with radius 8 (Lets name it as A). Now when I click on the circle A, poly line ...
3
votes
2answers
1k views

OpenLayers dynamic rules defintion & clone function filter

I'm developing on a OpenLayers application which creates dynamic rules for a vector layer using the geostats library. I want to create these rules inside a simple loop through the number of classes. ...
3
votes
1answer
522 views

Making calls the PostGIS functions with Java

We have Java stored procedure in Oracle that make calls to functions offered by Oracle Spatial to perform spatial analysis and return results. I am looking to the same in PostGIS, is this possible?
2
votes
1answer
1k views

Getting capabilities from tomcat's Geoserver fails

I want to take capabilities from tomcat's geoserver, using this code: wms = new OpenLayers.Format.WMSCapabilities(); OpenLayers.Request.GET({ ...