OpenLayers is a JavaScript library for creating dynamic map widgets for web sites.
3
votes
3answers
2k views
How to register onclick handler for *all* KML feaures in OpenLayers?
I'm a newbie using OpenLayers with JQuery to display vector data from KML files. I'm creating the layer like this:
newlayer = new OpenLayers.Layer.Vector( layerid, {
projection: ...
3
votes
1answer
3k views
SelectFeature with Double-Click
I have the ability to select features on the map with a click using OpenLayers.Control.SelectFeature. How can i add a double-click handler to that?
I have tried modifying this code to suite my needs, ...
2
votes
3answers
421 views
GeoServer layer preview shows only missing images for tiles
Just getting started with GeoServer and already running into problems. When I click on Layer Preview and view any of the preloaded data in OpenLayers (or any other format) it is just blank and has the ...
2
votes
1answer
343 views
Openlayers - Get extent of WFS vector layer and zoom to that extent when map
I would like to do the following:
1) While loading an OpenLayers map object get the lat/long Bounding Box of a WFS vector layer served from GeoServer.
2) Use the extent from the WFS vector layer to ...
2
votes
2answers
645 views
How to change the vertex style for editing?
When I use drag feature, then the circles on the polygon edge has the same style.
For example, this OpenLayers site.
I need to change it, I mean they need to be a different color.
What is their ...
2
votes
1answer
1k views
XYZ Layer in Open Layers has Missing Tiles
In Open Layers I'm having a missing tile problem where it generates a missing link icon and a pink background. I found several threads including this one saying to add this code
...
2
votes
1answer
1k views
Creating Vector features onload in Openlayers
Using openlayers and javascript I wish to create two vector layers and add a polygon to one of them and a circle with a centre point to the other
My polygon will be in WKT and my circle will be a ...
2
votes
1answer
1k views
Help Setting up GeoServer Proxy with OpenLayers
I have a GeoServer WMS in Apache-Tomcat at http://localhost:8080 and a mod_wsgi app in standard Apache at http://localhost:80/myapp.
My OpenLayers map is being hosted statically by the Apache-Tomcat ...
2
votes
1answer
720 views
OpenLayers GeoJSON Data Store
Background: I have a single geoJSON data object that backs multiple Vector Layers of its features. I do this because the feature data has many attributes and can be presented in many different ways, ...
2
votes
1answer
684 views
geoserver wfs insert error
I keep getting an insert error from geoserver when trying to save a point, poly etc etc to my postgis table. any ideas, my code is below
var Projection = new OpenLayers.Projection("EPSG:4326");
...
2
votes
4answers
553 views
Incremental retrieval of data from a database - OpenLayers
I have a new task now:
The user will input the lat-lon values in a html Form and when an INSERT button is clicked these values should be stored the DB. Now when a submit button is clicked the markers ...
1
vote
1answer
421 views
How can I add an infowindow to an OpenLayers GeoJSON layer?
In my OpenLayers script I refer to an geojson layer. Is it possible to add an info window?If yes, how can I create this. Script is as follows:
var lon = 5,
lat = 52,
zoom = 7,
epsg4326 = ...
1
vote
2answers
197 views
How to edit using a WFS service, without showing it on the map in OpenLayers?
I have a service with about thousand points. I wish to enable the user to edit the attributes of the features.
Since there are so many points, I don't want to display them as a vector layer (using ...
1
vote
1answer
525 views
Googlemaps Layer on Openscales
I'm using openscales in a web mapping project, i would like to add a Google maps layer, i know that there's some licence problems , but i don't care for these licence issues, i'm looking to add ...
1
vote
2answers
1k views
How to initialize a WFS Layer?
Here is the code block (the layers are stored in Oracle database):
var saveStrategy = new OpenLayers.Strategy.Save();
var adresspt_wfs = new OpenLayers.Layer.Vector("Address points WFS", ...
1
vote
1answer
612 views
How to unproject coordinates on a Google map with Openlayers?
Below is my code and a pic. When I finish making my circle on a Google map with Openlayers, I get the following coordinates but I want coordinates like E.G:
bottom: -27.762124575762
left: ...
0
votes
1answer
65 views
How get Map extents for draw polygon when final click is done?
I am using openLayer js to draw a polygon and now i want map extents of the drawn polygon one final click (i.e. user finish drawing polygon or double click is done). For drawing the polygon i am using ...
0
votes
3answers
3k views
Understanding the polygon handler function in Openlayers
Using openlayers, I want to be able to draw one polygon on a map. After one polygon is drawn, I want an event to fire that stops any more from being drawn until a button is pressed. My current code ...
8
votes
3answers
6k views
How to define layer order in Openlayers?
I have a marker layer, two vector layers and two raster layers.
The marker layer gets covered by the two raster layers.
Is there a way to move the marker layer always on top?
Edited: The order of ...
7
votes
3answers
906 views
Suggestion about the database to be used with OpenLayers
Can anyone suggest me which database to be used with OpenLayers? I have to store the values in a DB table and retrieve them (trivial tasks). which is better MySQL or PostGIS? Can anybody give benefits ...
6
votes
2answers
4k views
In OpenLayers zoom to extent of all overlays
In Openlayers I can zoom to the bounding box of all layers like this:
map.zoomToExtent();
I can also zoom to the bounding box of a single layer:
map.zoomToExtent(layer_name.getDataExtent());
Is ...
5
votes
2answers
2k views
How to change the WMS Background Color in OpenLayers?
I am using geoserver to serve up an image pyramid basemap. I want to have all areas outside of the data extent be black (instead of white).
I have the map displayed inside of a div tag and changing ...
5
votes
1answer
476 views
What server and API to use for displaying complex polygons with dynamic symbology?
Background
I need to interface a map into an existing website which allows the user to query a database and which currently results in a table listing population statistics per county.
For example, ...
4
votes
1answer
184 views
How to create a vector feature drop target?
I would like to create, inside an openLayers map, a drop target for my features.
The user should be able to drag a vector feature, drop on the target so that some further action can be triggered (in ...
4
votes
3answers
289 views
Can I prevent features from being created outside an OpenLayers map?
In our app, we allow users to create features on maps. The boundaries of these features will later be converted into real-life latitude/longitude coordinates, but does not make sense if features are ...
4
votes
1answer
4k views
How to get features in Openlayers vector layer
What is the exact API to get all features in a vector layer in OpenLayers? Suppose I have the "map" object, within which is a "Vector Layer": how can I obtain features in the layer?
4
votes
1answer
2k views
GeoServer Web Feature Service (WFS) in Open Layers Problem
I am running GeoServer 2.1.1, and have a datastore from ArcSDE populated with features projected in EPSG:26918. I can successfully add a WMS to an OpenLayers map, but am having issues with WFS. I have ...
4
votes
1answer
3k views
register event “loadend” on layer
I'm trying to register a listener event on "loadend" for my google maps layer on OpenLayers. But for some reason it's not firing. There must be something small i'm overlooking. What is wrong with my ...
3
votes
2answers
124 views
Question Regarding Interpretation of Openlayers BBOX in 4326 Projection
I have a BBOX strategy in my Vector layer, which is sending HTTP GET Requests to my server in order to get the features I wish to display. The projection of the layer is EPSG:4326, so it is my ...
3
votes
1answer
244 views
OpenStreetMap tiles not loaded despite being received
While using OpenLayers to load OpenStreetMap, I observe that part of the map would sometimes be covered with blank pink tiles. I searched and found similar complaints with solutions suggesting the ...
3
votes
1answer
165 views
What is the difference between projection and displayprojection for a Map in OpenLayers?
I am familiarizing myself with Openlayers, and am having trouble with understanding the projection and displayprojection properties for a Map.
When the map is initialized with the following code:
...
3
votes
1answer
632 views
Wrong tiles generated in OpenLayers XYZ layer
I am creating a map in OpenLayers using Base layer as ESRI online map server. And second layer as our own esri map server serving the overlay. The Base layer shows correctly, but OpenLayer requests ...
3
votes
2answers
1k views
Prevent OpenLayers WMS layer cache by browser
I am using OpenLayers (GeoExt) with google chrome browser. All WMS layer is for live database. I have refreshed the browser at certain interval using javascript but the data is cached in browser and ...
3
votes
1answer
2k views
Print Library for Open Layers?
I realize this is a bit of an open question but are there any known open javascript libraries which facilitate printing an OpenLayers map? I'm looking to produce the content on the client and ...
3
votes
2answers
3k views
Use OpenLayers WMSGetFeatureInfo on Mapserver Layer?
I'm able to use OpenLayers' OpenLayers.Layer.Mapserver declaration to generate a raster from GRIB data. I've read in the MapServer docs and on forums that it should be possible to get point ...
3
votes
2answers
2k views
Will mousedown events fire with Touch events on OpenLayers mobile?
I can't get the mousedown event to fire on a mobile device when I click on a marker. I'm using openlayers 2.11 with TouchNavigation. The mousedown event fires just fine in Chrome on my Desktop. Are ...
3
votes
1answer
2k views
Path to proxy.cgi for GeoServer is not accessible in browser
There have been several questions very similar to this asked already (including ones not involving GeoServer), but their solutions have not solved my problem. I am trying to use getFeatureInfo on my ...
3
votes
2answers
2k views
Is there a way to limit the overview map to a certain zoom level?
The OpenLayers overview map control works great when I use standard options. I would like to limit the overview to one resolution, but I can't seem to find the right combination of values for the ...
3
votes
2answers
687 views
How to set a custom center and zoom level for Zoom World icon in OpenLayers?
OpenLayers Zoom Pan Control has a Zoom World Icon. When it is clicked the map zooms all the way out. Is it possible to override this behavior and define a center and zoom level to which the map should ...
2
votes
0answers
42 views
Problems printing OpenLayers Pluggin Maps To Scale
It the print composer I can print all maps to scale and satisfactory.
However, when I add the OpenLayer, usually Bing Aerial, to the project I cannot print it out to scale.
I click the scale box, ...
2
votes
3answers
130 views
how to change color of feature to mark it as recently modified with openlayers
I am developing a crowd sourced app using openlayers. after user clicks an feature, a popup form is displayed. After clicking the save button, the data is used in processing which takes some time so ...
2
votes
2answers
199 views
How to get column names of layer (WMS) using OpenLayers?
Is it somehow possible to get layer's column name using OpenLayers? any example and documentation would be really useful?
Edit:
I have already tried WMS_describeLayer topp:states layer:
<?xml ...
2
votes
3answers
393 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 ...
2
votes
0answers
738 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
3answers
331 views
Can we request new OpenLayers WMS image for an extent without moving the map?
Can we request new OpenLayers WMS image for an extent without moving the map center ?
Reading OpenLayers code, OpenLayers move map center to new extent, and THEN do HTTP request to get the image.
Is ...
2
votes
0answers
244 views
Map is missing when I “export as image” via print composer [closed]
I have point data on a vector layer that prints accurately via print composer (when I
"export as image"), however my map below either does not show up or shows up at an incorrect scale. I used ...
2
votes
0answers
201 views
Zooming the map after filter
I have wms layer and after i do cql filter on this. And now i want to see result. I want map zoomed to this result. My code.
ex=layer.getExtent();
map.zoomToExtent(ex);
But getExtent() returns ...
2
votes
1answer
916 views
Change Vector projection in Openlayers
I have added vector layer to map
vactorTest = new OpenLayers.Layer.Vector("Editable Features", {
strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy],
projection: new ...
2
votes
1answer
371 views
Open Layers Control Modification
function testPanZoom() {
console.log("test func");
var newPanZoom = new OpenLayers.Control.PanZoom();
OpenLayers.Util.extend(newPanZoom, {
onButtonClick: function(evt) {
...
2
votes
1answer
162 views
Select all vector features underneath the mouse cursor (clientside)
I have a number of polygons that are exactly equal covering each other and shown on one layer. When using OpenLayers.Control.SelectFeature - only the topmost feature is selected.
How to get info on ...
