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

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2answers
1k views

How to uncheck a layer in LayerSwitcher on map load?

I have four layers in the LayerSwitcher. When the map is loaded all the layers are checked by default. I do not want to show all Layers as checked.How do I uncheck a layer when the map is loaded?
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4answers
887 views

problem in reading kml data in openlayers

I am trying to read an KML file (point feature) and show it on a vector layer on OSM as the base map. My code seems to have a problem that does not show the features on the map. I don't now if its the ...
2
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1answer
119 views

Java or .net platform is good for creating interactive web page [closed]

I have just now completed my degree in Spatial Information Technology, and learned how to use the ARCGIS platform and QGIS. Now I wanted to create a server/client webpage using mapserver for a project ...
3
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1answer
764 views

toggle clustering with map controls

I've made a map with openlayers and have the vector features clustered with a clustering strategy. Now I want my users to be able to toggle this behaviour with a control similar to the layerswitcher. ...
0
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1answer
822 views

how to read/write XML file using Openlayers?

I am new to OpenLayers. I am trying to load data from a datasource and show it on a OSM map, then also add the functions such as tagging and making new features as well as editing their attributes. My ...
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0answers
85 views

OpenLayers doesn't understand Mercator map measured in degrees?

I have access to a map server that takes a bounding box measured in degrees, and returns a map, projected in Web Mercator. I'm having trouble configuring OpenLayers to use a Mercator projection that ...
1
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1answer
268 views

How do I overrideMimeType in Openalyers.Request.Get

I can't find any info on this. When performing a GET request with the following format, I cant figure out how to add the request for "overrideMimeType("application/xml")": request = ...
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1answer
86 views

trying to create array reader for feature fields

I am trying to create a functionality that creates array data for any layer that user selects. Now I am able to get all the data in the feature layer that the user selects but I am having some trouble ...
2
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2answers
2k views

zoom to cluster onClick & have hover event

I've made a simple mock-up trying to combine two openlayers examples. I want to have clusters on which I can hover (so I can display an infowindow about it's content) and I want users to be able to ...
4
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1answer
3k views

Openlayers display a markers popup using a button out of the map

I have the following code which addes 3 markers to the map along with there popup boxes what I want to do is have a list of location at bottom of page and using the id of the marker when click a place ...
5
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2answers
2k views

Create multiple vector layers by reading a GeoJSON file once in OpenLayers

I am a begginner to OpenLayers, and my question is about making things more efficient. My work is about displaying time-dependent weather elements on several point locations on the map. All these ...
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0answers
515 views

OpenLayers dynamic zoom levels

In my application i add layers dynamically. The first added layer is a baseLayer. When i add layer i extend bounds so the new layer could fit map (it works). The problems is that i don't know how to ...
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1answer
1k views

Editing layers in GeoServer with web application

I wanted to edit layers in GeoServer where they are store in PostGIS database. I have refereed ...
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1answer
340 views

ArcGIS Reference Layer over ArcGIS Terrain base(or Imagery) Layer using OpenLayers

I am using Openlayers for a Map application which uses basemaps by ESRI (or ArcGIS). What I am trying to achieve is something like this: http://www.arcgis.com/home/webmap/viewer.html From Basemaps ...
2
votes
0answers
338 views

Openlayers, valid zoomlevels are offset by 1 level. Why?

I have an openlayers based web app, map object is initalized like this: p4326 = new OpenLayers.Projection('EPSG:4326'); p3857 = new OpenLayers.Projection('EPSG:3857'); //initialize map object, bind ...
3
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1answer
2k views

Cant see WFS-T layer with OpenLayers and GeoServer (Windows)

I am trying to implement a simple test of a OpenLayers + WFS-T + GeoServer -setup. I have followed the instructions by populating PostGIS and configuring GeoServer, and can see the WFS-T layer data in ...
3
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1answer
145 views

color code wms maps

I have various WMS map layers showing state/province capitals and various lower level administration (eg. district) head quarters. I want to demarcate the state capitals and district head quaters ...
2
votes
1answer
894 views

How to design markers - raster or vector?

I have several layers that are point geometries. I am defining them custom markers symbols and such symbols have colors (red, yellow and green) to represent values. Since there are several of them in ...
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0answers
479 views

Openlayers 2.12 + Firefox 15 = OSM Layer not showing

I know it's due to the new Access-Control-Allow-Origin in OL 2.12, but it is still not functional to me. I've followed instructions on here on stackoverflow. Firefox version 15.0.1 Apache2 config ...
1
vote
3answers
2k views

How to show vector features in OpenLayers after hiding it?

I did change some vector features style (through check-boxes) using style property : var features = layer.features; for( var i = 0; i < features.length; i++ ) { //features[i].style = { ...
6
votes
1answer
378 views

How To Do OpenLayers.Mobile Popup

It seems that the OpenLayers.mobile.js library (v 2.12) doesn't have a popup class. Does anyone know how to do a popup with the mobile version? I'm using some code that i ported over form normal OL ...
4
votes
1answer
1k views

OpenLayers Map with custom SRS (without EPSG code) [closed]

Is it possible to show geodata by OpenLayers in custom projection? I want to show my geodata in OpenLayers interface. Source layer(s): shape-file(s), standard epsg:4326 lon/lat projection; ...
6
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5answers
2k views

Deactivating Openlayers Cluster after a certain zoom level

I want to deactivate the cluster strategy after zoom level 16. The Cluster strategy gets deactivated and I also change the style of the original features and redraw the layer. But still it takes the ...
2
votes
1answer
2k views

How to change an OpenLayers vector layer from automatic to manual get request?

I have a web server that returns a FeatureCollection in JSON. I was getting this using the code below, which works perfectly: var vectorLayer = new OpenLayers.Layer.Vector('geoJSON', { ...
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1answer
1k views

Requesting remote data using openlayers for multiple URLS and storing respose value according to URL

I have problem creating feature count window. I have urls stored in as json object. I iterate it with jquery and send request to remote data. The I have featureStore which is initially set to 0. When ...
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0answers
194 views

Project tiles from custom imagery in transverse mercator with OpenLayers

I have the following parameters of a custom imagery and I need to set-up a layer in OpenLayers with which I would project the tiles properly from this imagery. TransverseMercator ellipsoidName=WGS84 ...
4
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2answers
3k views

How to collect data via WFS and Popup

I have a map with a WFS-Layer and I am able to add Polygons to my data stored in a PostGIS-database, served with Geoserver (Openlayers, Geoserver 2.1.4, PostGIS 2.0 for PostgreSQL 9.1).) How can I ...
4
votes
1answer
6k views

OpenLayers Hide/Show Layers from external checkboxes

I'm using OpenLayers with mapserver to display a lot of raster images and queryable wms layers. Everything works fine, the layers can be turned on/off in the OpenLayers layer switcher...But now I want ...
2
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2answers
262 views

Drawing a rectangle that will always be on certain area of map

Using OpenLayers is it possible to draw a rectange that will always be on one portion of map without regards to zooming and panning of map?
2
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0answers
216 views

Displaying text from dxf in Openlayers

I managed to import .dxf into Postgis table, and now have, among others, rows with Point geometries and values in text column (which corespodent with Label values from ACAD .dxf). What is the best ...
0
votes
1answer
3k views

How to Obtain the feature attributes from feature collection

I am able to obtain the features of the layer which is selected by the user in the Layers table and then intersected by a user defined polygon, using e.features. I was able to obtain the attribute ...
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0answers
868 views

searching GeoJSON features

After googling for many days and reading the OL documentation, I don't understand well how the filterToParams in OpenLayers.HTTP protocol should work, what I'm trying to do is to find and display the ...
3
votes
3answers
4k views

local tiles server for offline access

Anyone knows if there is a "lightway" solution to mount a local tile server? Feature I'd to provide is local storage of small sections of maps, not more than small city for example, in order to ...
3
votes
2answers
500 views

Design question: what's the role of WFS-T in this kind of webapp?

I have more experience in "traditional" (Java EE) webapp development, and I am trying to figure out a decent design for a mapping web application. My application has a map, and users can see and edit ...
6
votes
4answers
3k views

Best solution for printing Google Maps?

What is the best solution so far for printing Google Maps as a base layer of Vector layers in Geoserver/OpenLayers application ? I used to print WMS layers using GeoExt print page example, but when ...
0
votes
1answer
138 views

Control visibility of multiple layers

I am displaying multiple feature types using one layer in OpenLayers, like here: var **vector** = new OpenLayers.Layer.Vector("My Layer", { maxExtent: new OpenLayers.Bounds(-1.09863,44.42907, ...
3
votes
2answers
368 views

Can OpenLayers request different language tiles from map providers (eg Bing or Google)?

If I am in the US and my browser locale is en-US, I'll get English language maps by default from Bing. Same thing if I access Bing tiles with OpenLayers. If I change my country/region to (for ...
1
vote
1answer
232 views

Issue openlayers and tilestream

Basically I created a MBtiles using Tilemill and it generates a map with six zooms. I implement it into tilestream. I added a layer on the openlayers module(Drupal) in XYZ: ...
3
votes
0answers
2k views

Map printing using OpenLayers

Following OpenLayers map printing demo here, I'm able to get my map in image format. But I'm facing two issues with the export: Google Street base map is not included in the image output; Whenever I ...
36
votes
4answers
18k views

Should I use OpenLayers or Leaflet?

I was debating with one of my collegues on OpenLayers v/s Leaflet. I made a point that OpenLayers is much better API if we wish to build a project, where you need direct connectivity to the Geoserver ...
2
votes
2answers
2k views

Fixing the OpenLayers MBTiles Example

I've been trying to implement the OpenLayers Example for reading MBTiles: http://projects.bryanmcbride.com/ol_mbtiles/ Right off, the link to the necessary mbtiles.php script was broken, but I found ...
3
votes
1answer
863 views

Limit Zoom on WMTS Layer using Openlayers 2.12

I'm implementing a baselayer to be used by a Plone addon (collective.geo.openlayers). My implementation specifically creates a layer and returns it to the addon, which enables many different layers to ...
3
votes
2answers
846 views

OpenLayers 2.12 + KML from String + Change markers'icons

Reading this post How to add KML data but from variable - not from url? I changed the way of reading KML files (from HTTP to a string loaded using jQuery) /** * The OpenLayers object * @type ...
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0answers
405 views

Tie up LineString to the feature when dragging it in OpenLayers

I have an application in OpenLayers which shows a number of devices (Feature) on a map. The devices are linked between each other by cables (MultiLineString). ...
2
votes
2answers
578 views

How to export vector features to grid using proxy and WFS protocol?

I am trying to export vector features (current view) as a grid, something like: http://workshops.opengeo.org/geoext/wfs/grid.html so far layer features are not being retrieved.. I got empty grid in ...
0
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3answers
834 views

Trying to fetch feature data by intersecting Vector Polygon and WMS feature layer

I am trying to intersect a user defined polygon with a Point WMS Feature Layer. I am using the following code action = new GeoExt.Action({ text: "draw poly", control: new ...
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1answer
373 views

Adding CSV upload browse button to Ext.Action

I am trying to create a CSV File upload on GeoExt Map App. I need to place the upload function within the Ext.Action, so that I can add it to the toolbar of the GeoExt Panel. I am trying to implement ...
3
votes
1answer
704 views

OpenLayers 2.12 + click handler + get the name of the vector

Basically, I add several vector layers (KML content got from jQuery GET) in this way: var layer1Vector= new OpenLayers.Layer.Vector('activeInfo'); layer1Vector.addFeatures(featuresLayer1Vector); ...
1
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1answer
273 views

How to parse xsd:schema file using openlayers?

I got layer column names using this thread. But I am stuck parsing it. How to parse this xml using openlayers? <xsd:schema elementFormDefault="qualified" ...
1
vote
1answer
789 views

How to disable overlay check box after a certain zoom level?

How do I disable a particular overlay checkbox in the Openlayers Layerswitcher?