OpenLayers is a JavaScript library for creating dynamic map widgets for web sites.

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1answer
463 views

Geoserver and SRS

I have a very basic problem, and please bear with me since I'm new to GIS. I have geoserver installed in a Ubuntu Box and installed a few maps in shapefile. The maps were originally in ArcGIS format ...
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0answers
201 views

OpenLayers Icon e PopUp

Ciao, sto creando una pagina in php con una mappa ... in OpenLayers Examples ho trovato due interessanti esempi: esempio che mostra come usare diversi tipi di poupup ...
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1answer
230 views

PopUps for all the Feature layers

I am trying to create GeoExt action button to fetch the feature info from all the layers. I am still getting the info for my point features but I am getting nothing for the usa:states, that appears in ...
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2answers
2k views

How to read OpenLayers event object features?

This is part of an interface that uses a box to select features on a WMS Layer. This then writes the name of the features to a div as a list. var recycling = new OpenLayers.Layer.WMS( "Recycling ...
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0answers
271 views

ScaleLine shows NaN for LCC projection

I have used openlayers along with geoserver. My Map is having LCC projection by default, but SRS is EPSG:4042. The problem is that the scaleline shows NaN in meter as well as feet. How can I correct ...
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2answers
628 views

OpenLayers how to maintain layer ordering while using SelectFeature control

I'd like my map to display a few layers in a particular order. Some of these layers are Vectors, others are XYZs, and some of my Vector layers display attribution. Initial layer ordering works fine ...
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1answer
519 views

Creating a GeoExt Action from OpenLayers Function

I am trying to create a GeoExt function out of this OpenLayers function, which displays the getFeatureInfo. I was able to create this GeoExt.Action() but it does not give me any output. Any idea ...
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1answer
1k views

OpenLayers Control.WMSGetFeatureInfo does not send request to geoserver

I'm refactoring the code used to getfeatureinfo from geoserver running on port 8080 at http://www.edpp.cz/zul_mapa-povodnoveho-planu-mesta/. The old version uses OpenLayers.loadURL and successfully ...
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1answer
400 views

OpenLayers.Control.DragFeature, strange behavior

Hi GIS-Cracks, I've been reading in this forum for a while and it helps me lot of times. Now I think it is the time to help me again but maybe other people too. So I try to describe a problem I have ...
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1answer
184 views

How to get a handle on default MousePosition elements in OpenLayers?

I have an OpenLayers interface with two maps side-by-side. They are synced so that any pan or zoom action on either map affects both of them. I also have MousePosition controls on each map so that ...
3
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1answer
2k views

OpenLayers with a small, discrete set of XYZ tiles

I'm trying to set up a handy map of my Minecraft server to share with my fellow players; the specifics on that front aren't really necessary though -- suffice it to say that I have a tile set (each ...
2
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1answer
268 views

Wrong coordinates after resizing the map

I catch a click event on openlayers map and show a popup with featureinfo (if any) with position set as map.getLonLatFromPixel(new OpenLayers.Pixel(e.xy)). The user might set the map to show in ...
2
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1answer
799 views

How to make OpenLayers.Popup draggable?

I've used jquery-ui draggable option as following but the moving popup can not be ended once dragging has started. Is there any another method to make OpenLayers.Popup draggable? popup = new ...
2
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2answers
2k views

Google Maps/ OpenLayers only rendering top left tiles

I'm seeing a weird issue with Google Maps and OpenLayers. When loading a page as shown below, only the two top-left tiles render, leaving the rest of the map blank. I looked in the Network tab in ...
0
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1answer
2k views

How to check if wms layer is queryable in openlayers?

I'm running a map with lots of different wms layers published by geoserver. Some of them are queryable, some of them are not. How can I tell that with openlayers api? I'm requesting getfeatureinfo and ...
2
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1answer
249 views

Which OpenLayers.Protocol should I prefer which design patterns provided at?

At our scenario, there is a server which stores the feature info (coordinates, properties, etc) into a SQL database. Google Maps are used for a layer. The geoJSON data format are used for ...
3
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4answers
419 views

Is it possible to change the name of a Stamen basemap in OpenLayers?

I'm adding a Stamen basemap to OpenLayers using the syntax below. Is it possible to change the layer's name, so that it appears in the Layer Switcher using this name (rather than "toner")? The ...
2
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3answers
914 views

adding non spatial attributes using geoserver

I am using Openlayers + geoext to perform transaction operations in postgis database using geoserver . i can insert spatial data into postgis but cannot insert other data like road name, road type in ...
6
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4answers
11k views

Customizing Popups in Openlayers

Is it possible to customize the shape of popups in OpenLayers? For example, I am creating a pop-up using the following approach: var popup = new OpenLayers.Popup.FramedCloud( "popup", ...
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1answer
1k views

Openlayers zoom limit with Google Maps

When using Openlayers I am unable to achieve the same zoom level that Google Maps allows. For example, if I embed a Google Map in my web-page I can zoom in to the building level in a city. When using ...
5
votes
4answers
811 views

How to use OpenLayers for CrowdSourcing/ collect data?

I'm currently making my first steps in OpenLayers, trying to build a page showing a map where people can add data, which is then saved back in our database. (Background: Mapping of the distribution ...
2
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2answers
66 views

How can I create a new function inside a existent class in OpenLayers?

I want to add some functions inside a existent class in OpenLayers. For example, I want to add function A() and B() and a variable C inside OpenLayers.Layer.Vector. var X = function() { A() = ...
2
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1answer
79 views

Which conditions does the geoJSON file read from the server in?

I've added an alert to the function myReadFunction in order to detect function calls. As according to my observations, the function readMyFunction is called sometimes while I have been navigating on ...
2
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1answer
533 views

How to validate whether the BBOX strategy works successfully?

I want to send requests to our feature server that asks only data within the viewable map extent. So I've used BBOX strategy and HTTP Protocol as following code. mVectorLayer = new ...
2
votes
1answer
1k views

Problem with layer order in OpenLayers and Google styled maps

I'm using OpenLayers with Google styled maps. My biggest problem is KML polygon layer which needs to be under roads layer but it isn't (see prtscr). What am I doing wrong? This is my coding: ...
3
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2answers
52 views

Which OpenLayers highlights should I present to a non-specialist audience?

Hello Openlayers Experts/Users There is an event in my University that interests in Open Source Software. I am supposed to give a short presentation about anything related so I thought about giving ...
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1answer
1k views

How to overlay roads layer on top of all layers in OpenLayers?

I want to put roads layer (from any source, please recommend some..) on top of my KML polygons and base layer: baseLayer = new OpenLayers.Layer.WMS("OpenLayers WMS", ...
2
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1answer
316 views

Giving properties to Zoomify layers in OpenLayers?

I am using OpenLayers.Layer.Zoomify to show large image files and this works like a charm. The only thing is that I would like to add some options to that layer ( opacity and transitionEffect) but it ...
2
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1answer
169 views

How to get the number of objects at a pixel position?

Is it possible to get the total number of objects (Lines,Points) at a given pixel position in the map?
8
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2answers
2k views

How to resize a point on zoom out?

I've added a point on map like this but it is static in size. How to resize that point on zooming? Map on zoom out Any guidance and help is appreciated.
15
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4answers
1k views

What are some high-profile websites that use OpenLayers and PostGIS?

I think there are many convincing arguments for using PostGIS but I am interested in showing people examples of websites that use PostGIS and OpenLayers. Some examples that I have seen are: ...
0
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1answer
447 views

How to insert non-spatial data through WFS-T insert?

When i perform wfs-t insert operation using postgis database only spatial data and primary key gets inserted. Can anyone point me to some examples in which attribute data are also inserted along ...
2
votes
2answers
991 views

How to search and zoom to result using WMS?

I am making a web gis application (openlayers/geoserver) to display a layer of properties, I need to add a functionality of search in it based on the name of the owner. A list of similar names ...
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1answer
392 views

error performing wfs-t insert in postgres 9.1.4

I am getting error performing insert exception while performing wfs-t insert operation when i use postgres 9.1.4 and postgis 2.0. but i get successful insert when using postgres 9.0.1 and postgis ...
0
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1answer
551 views

How to pan (rather than zoom) when using a 2-finger drag on a Mac

Using Mac OSX, dragging the trackpad with 2 fingers performs a scroll of the web page, equivalent to using the mouse wheel. However, if the cursor is located within an OpenLayers map, the 2-finger ...
3
votes
1answer
587 views

How to hide some parts of an image layer with OpenLayers?

My Problem I'm currently displaying a layer image above a Google Maps base layer. I would like, when the user check/uncheck some checkboxes, that some parts of this image layer disappear, and the ...
3
votes
1answer
533 views

How to show a point on mouse over a hidden polygon?

Any suggestions on how to show a point on mouse over a hidden polygon? A single kml file contains two polygons and two points as in the image, I've hidden these polygon and point by setting stylemap ...
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2answers
865 views

How to add point with current mouse position while mouse over on line feature?

I have a line feature in a vector layer "A", while i mouse over on that line. A point should be added to vector layer "B" with current mouse position. OR how can get lat lon of mouse position while ...
3
votes
3answers
338 views

Use Esri PersonalGeodatabase layers in OpenLayers

I would like to Know if it is possible to open a Personal Geodatabase of Esri with Openlayer with FileGDB_API_VS2010_1_2 Thank in advance Juan
9
votes
2answers
1k views

What's the best way to display thousands of polygons in Openlayers?

I am trying to create an Openlayers map that will display thousands of polygons. And when the user clicks on each, I want some of the metadata to display. Working with this large of a dataset seems ...
3
votes
5answers
3k views

How do I make KML overlays appear in OpenLayers at all zoom levels?

I need to overlay KML polygons on basic map in OpenLayers. I need that KML is visible on every zoom level. I did some coding, but my KML is not showing up. What am I doing wrong? Thanks. <!DOCTYPE ...
0
votes
1answer
147 views

Syntax for wfs-t request

I am in need of the correct syntax for performing transaction on WFS layer using OpenLayers. I have gone through many examples on the OpenLayers site and other examples, but can't figure out how to ...
3
votes
0answers
2k views

How to edit Attributes on WFS Layer through Popup?

I am working on a project for university. So far I have displayed WfsLayers which can be select from a panel, also I can click on my points whereupon a Popup will show up with some information which ...
2
votes
1answer
617 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
526 views

Distances and areas in Google projection

I have a mapping website used to capture polygons using OpenLayers in Google projection (900913) and storing them in sql server 2008 as geometry. The SRID on the sql geometry column is set to 900913. ...
0
votes
1answer
536 views

How to create KML file with OpenLayers?

I try to create kml file from features. My code var feature=myVecLayer.getFeatureByFid('filedata.1'); var format; function GetKMLFromFeatures(feature) { ...
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1answer
221 views

Is schema definition compulsory for WFS-T

Most tutorials on WFS transaction uses a schema and geom attributes in WFS request like this var wfs_layer = new OpenLayers.Layer.Vector("Editable Features", { strategies: [new ...
2
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0answers
158 views

dojox.geo.openlayers roadmap?

I'm curious as to the future of dojox.geo.openlayers. Presently is seems only to be a solution for positioning widgets on the map but I can imagine developing a suite of map specific dijits such as ...
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2answers
631 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 ...
3
votes
2answers
2k views

Load layers only when zoom level is reached

I'm trying to load different layers based on the user zoom level with OpenLayers. I've seen some similar questions in here, but they load the layer and then hide/show it based on the zoom level. I ...