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

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How to load WMS Layers automatically when using heron MC

I'm using Heron MC with extJS, GeoExt, and OpenLayers 2.13. At first I try the default configuration of the Heron MC and every layers load automatically when I opened the webpage. However, when I ...
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1answer
73 views

Is it possible to access geoserver wfs layer from localhost:8080 in to web application? [closed]

I want to add a WFS layer. I am trying to get WFS layer from localhost:8080 geoserver. but I am getting eoserver DateLineWrap in Openlayers.js file...
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31 views

How would I get number of tiles loaded, and total number loading?

So new to OpenLayers 3, and I'm trying to create a "loading bar" to indicate how much of a layer has loaded. I'm thinking of making it based on the number of tiles loaded so far divided by the total ...
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29 views

Zooming to specific polygon boundary Openlayers

I want to zoom to specific polygon boundary of some polygon layer. How can I do this.The map layer is WMS layer.
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39 views

How to use POST method with Overpass QL and OpenLayers?

I am using OpenLayers and Overpass QL with GET method to retrieve data from the Overpass server. Some URLs tend to be very long and hence get rejected by the Overpass server. To get around this, I am ...
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22 views

Which are the differences between using javascript openlayer and gwt-openlayer API?

I am about creating a web app which should use openlayer API, but I would like to use GWT too. So I have the following questions: Is it the same to use GWT-openlayers API in terms of functionality ...
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21 views

Wrapdateline support in Openlayers for Bing baselayers

I have setup the Bing map as the base layer. I want to have a continuous horizontal panning, so I have added the wrapDateline option in Openlayer for OpenLayers.Layer.Bing map type. However, afer the ...
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32 views

Why does geoserver layer disappear when baselayer is false?

I am trying to overlay a layer from Geoserver on an OpenStreetMap base layer. If I load the Geoserver layer as a base layer, I can see it - but if I set baselayer to false it disappears. My code is: ...
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63 views

How to install Proj4js.js in my localhost directory?

I'm developing a GIS website for vineyard management. I am using Openlayers with the WMTS IGN (French institute for geography) datas. It works fine. I also would like to add the possibility for the ...
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1answer
72 views

Error:getFeatureFromEvent is not a function - Openlayers Multiple layer selection

OpenLayers.Control.SelectFeature works well when I try to select single layer from map. But it throws error as getFeatureFromEvent is not a function when I pass a collection of layers to it. ...
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30 views

problem labelling cluster features in openlayers

I'm trying to label a vector layer with clustered points in OpenLayers. When the feature is clustered I want to show the value of an attribute of all the features included in the cluster. I've tried ...
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1answer
59 views

OpenLayers: add WFS layer from GeoServer and OSM

in a OpenLayers HTML file, i'd like to request the default tasmania data of my GeoServer (runs on localhost) and add them as an WFS Layer. The second layer should be an OSM-layer. This is my code up ...
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129 views

Development guide for beginner? [duplicate]

Im new to GIS and mapping, and I need to learn how to create web map application for my project. I'm really confused on what to use. I have read PostGIS, OpenStreetMap, and Openlayer. I'm wondering ...
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86 views

Problem with snap layer when in name is space

I'm trying to make a option, where user can choose layer to snap. All is okey when layers names are without space, but if in name is space (like 'something layer name') snapping does not work. How can ...
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24 views

Opposite than normal behavior in zoom with restricted extent and vector base layer

My map has OSM base layer and i have restricted its extent. This worked normally. Recently i added a blank baselayer so that the only overlays could be shown. base = new OpenLayers.Layer("Blank", { ...
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43 views

How to update location via a data streame in openlayers or Leafletjs

I'm developing a application where I need to real-time update a Location of a Map using a data stream, I'm planing to use web-sockets, Are there any guides I can follow? Or can you guys direct me in ...
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37 views

Open Layer and Vector seems not working

I configured geoserver (2.4.4) with a layer in EPSG:4326 projection. In my client side I added the openLayer code to read and show this layer as in the following: map = new OpenLayers.Map ("map", ...
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77 views

How to create switch the layers option using geoserver?

I did create some maps with three layers using layer groups with the help of some tutorials but i dint get the switching options like others. How to get that + mark locates in the right top corner ...
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39 views

Uncaught TypeError during proj4 transformation

I get: Uncaught TypeError: Cannot read property 'x' of undefined at proj4js-combined.js:2720 While executing this code (transforming polygon from one system to another): Proj4js.defs['EPSG:3765'] = ...
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1answer
76 views

Is there a way to know if an error occurred while loading a WMS layer, in OpenLayers 2?

First of all, I already asked this question in stackoverflow. I don't want to spam by asking again here. But I think the question fits better in gis.stackexchange. I am sorry for the replication. Feel ...
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3answers
108 views

Transforming polygon using Proj4js

I am reading the Proj4js User Guide but cannot quite grasp it. I import the library <script src="lib/proj4js-combined.js"></script> Then, function init() { (...) // reading from ...
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67 views

how to open geotiff as base layer on openlayers

i want to add a geotiff image as base layer on openlayers : copy my image.tiff in a directory and open it with openlayers directly without using a cartography server.
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30 views

Unregistering OpenLayers events?

map.events.register('click', map, fucntion(e){alert('on')} ); map.events.unregister('click', map, fucntion(e){alert('off')} ); Looks easy enough but un-registering just won't trigger. I ...
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58 views

Increase max zoom level in OpenLayers

I'm developing a map in an Android WebView, using OpenLayers and a WMS Service. I can only zoom a certain amount of times (which I would like to increase). My code is: map = new ...
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12 views

what are the other main components of GeoServer based system? [duplicate]

I am trying to build a system for publishing transit flying charts online through a web site which uses geoserver behind it and I am wondering which other components should I consider, like ...
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33 views

How to change the type of a layer attribute

I want to publish some point on an open layers map I used Postgresql with the geometric column and geoserver using WFS to connect with openlayers but I can't add Postgre or any geographic server to ...
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2answers
110 views

Returning string from OpenLayers.Format.WKT write? [closed]

How to return a string from OpenLayers.Format.WKT write this.innerHTML = new OpenLayers.Format.WKT().write( layer.selectedFeatures[0] ); my full code is like this please suggest me... ...
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26 views

Openlayer 3 - Layer Drawing order

I have a map with various vector layers, and I would like to be able to decide which layer goes on top of which. I thought that inserting the layers in the map layer group using: ...
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2answers
46 views

How to track ajax WMS requests in OpenLayers interface?

I'd like to track WMS requests on my openlayers web interface. How is it possible to log on my server or in Google Analytics every WMS requests (GetMap and GetFeatureInfo would be enough)? Then I'd ...
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31 views

How to make layer group folder into a check box to turn off all layers inside?

I would like to create a geoext layer tree containing layer groups which can check or uncheck all the layers within them. Would anyone know if this has been done or can be done? I was thinking about ...
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63 views

OpenLayers displays nothing when I try to add WFS Layer from Geoserver - can't work out where the problem is occurring!

I hope someone can help me with this problem as I'm very confused! I recently downloaded the IHO Sea Areas shape file from http://www.marineregions.org/downloads.php One of my colleagues has ...
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31 views

Openlayers stylemap default style doesn't render until mouseover in IE 7/8

I'm using Drupal 7 Openlayers, and adding my own custom behavior. I have no trouble getting my code included, and it works well on other browsers. But in IE 7/8, the layer features render with a null ...
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31 views

Draw elevation from mouse move

I recently tried this example but unfortunately It's not working, I don't know why (I've tried as same as possible) My output is I want to use WMS data from geoserver and applied it in CesiumJs or ...
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45 views

Openlayers filter strategy on wfs deactivate problem

I have a filter control which works nicely. However, when I try to reset/remove the filter, I don't get the original features back. The debugger shows my features array as still only being the reduced ...
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61 views

Why do my geowebcache tiles not work in openlayers client?

var options = { resrictedExtent: restrictedBounds, maxExtent: restrictedBounds, units: "m", projection: "EPSG:31467", ...
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39 views

passing tif image as input to openlayers code (wps implementation)

how to pass dem(tif) or raster layer as input to the openlayers ... //OpenLayers.ProxyHost = 'proxy.cgi?url='; OpenLayers.ProxyHost = "/cgi-bin/proxy.cgi?url="; //OpenLayers.ProxyHost = ''; var map, ...
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33 views

how to make a layertree with multple nested nodes?

On a previous question I asked how to get two levels on a layermanager. The response provided there was what I was needing at that moment. Now, I´ll like to create a little more complex structure in ...
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34 views

How to register geometries using OpenLayers and GeoServer in PostGIS?

I put a Editing Toolbar on my page using Google Maps Api as base layer. I want to register lines and points in PostGIS. But I want to know how I can get the longitude and latitude of gemotria (line ...
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18 views

Geoserver layer rotation problem

I have a mapping system setup with PostGIS, Geoserver 2.4.1 and OpenLayers 2.12 I am trying to use the geoserver vendor specific parameter "angle" to rotate a layer, and it seems to work fine. ...
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28 views

OpenLayer Maps not zooming

Initially the map zoom is set to 8, and that's the only place in the code i can change the zoom, any other location doesn't work. I have a function that draws a marker and a route on the map (works ...
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2answers
55 views

OpenLayers WMSGetFeatureInfo on MapServer WMS layer

I am trying to get a WMSGetFeatureInfo request to work on my MapServer WMS layer but I am not sure how to correctly configure my map file and the request in OpenLayers. I have setup a jsFiddle with ...
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193 views

Add Legend with GeoExt in OpenLayers

I need help with legend display for a WMS layer. So far I did this: - insert a Google Map Hybrid layer - insert a layer called "Vladaia" for creating the page - insert CQL filter for WMS layer - ...
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24 views

feature position on non-Geo-referenced Image

I use OpenLayers to show Map , when im creating the map, i want to show map image with an ImageLayer and VectorLayers, the image is non Geo-referenced. The use case: i receiving a map image url from ...
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1answer
82 views

Combining Hover and Click events in OpenLayers

I can specify event callbacks in an OpenLayers layer: var vectorA=new OpenLayers.Layer.Vector("A"); vectorA.events.on({ "featureselected": callback }); and I can specify event callbacks in a ...
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96 views

Print OpenLayers map with osm as background and all the vectors

I looking for an answer for a while, and i could not find a working solution. I am trying to exeport the OpenLayers map to some file - image or pdf, and i need all the background, include OSM and all ...
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127 views

How to drag a feature in Open Layers 3

I'm trying to replicate something that was fairly easy in Open Layers 2 in Open Layers 3, which is: dragging an existing feature to a new location on the map. In Open Layers 2 I just added a ...
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29 views

MapQuery (jQuery + Openlayers 2) unbind function

I have small gis app build on MapQuery, but development of this libary was stopped 2 years ago. MapQuery have bind function but do not have unbind one. bind: function(types, data, fn) { var ...
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1answer
63 views

Openlayers - ModifyFeature - How to label vertices with a progressive number

Apologize in advance as I am quite new in openlayer and javascript. I have a control ModifyFeature on a path vector layer. I would like the vertices to be rendered with a stylemap label showing ...
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1answer
155 views

Function to add layer with button click

I'm working with openlayers and geoserver to create a map and overlay layers. I need to add a layer when a button is clicked, but what I get is that the layer is added ( i can see it through the layer ...
2
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1answer
404 views

openlayers - export map to canvas problem

I am trying to make a export control to export the map as image file. I found this example: http://dev.openlayers.org/sandbox/camptocamp/canvas/openlayers/examples/exportMapCanvas.html so i added the ...