OpenLayers is a JavaScript library for creating dynamic map widgets for web sites.
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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 ...
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744 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 ...
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153 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).
...
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77 views
Geoserver FTL style in IE not rendering
I am using the WMS GEt Feature Info feature in Geoserver. I created an inner ftl (content.ftl), using the header and footer ftl as it is. The WMS Get Feature Info will go into a basic Openlayers ...
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165 views
Get tile URL with projection different than 900913
I have the following code, which should display a slippy map showing tiles producted by me with mapnik:
Proj4js.defs["EPSG:31258"] = "+proj=tmerc +lat_0=0 +lon_0=13.33333333333333 +k=1 +x_0=450000 ...
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153 views
Are there any examples of creating custom openlayers geometry types?
I am working on a project that uses openlayers where IE8 compatability is a requirement. Unfortunately, there seems to be some performance issues with OpenLayers in IE8 when parsing a large number of ...
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241 views
Vector layer shifted on OSM map: why?
I've defined the following map:
Proj4js.defs["EPSG:31258"] = "+proj=tmerc +lat_0=0 +lon_0=13.33333333333333 +k=1 +x_0=450000 +y_0=-5000000 +ellps=bessel ...
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132 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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125 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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167 views
OpenLayers WFS - GetFeature Draw Circle
I am developing GIS Portal using OpenLayers, I use WFS GetFeature to retrive some datas like bellow:
var layer = map.getLayersByName("pf_trecho_at");
var polygonLayer = new ...
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242 views
Openlayers WFS Overlay Problem
a) I am running a PostGIS database, and I want to display a Table with a about 500 Points of Interest. The POIs have the projection EPSG 4326.
b) Geoserver is installed, running and connected to my ...
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374 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 ...
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198 views
How to get feature geometry?
I want to have a gridPanel with feature geometry. But i cant image how to do this. I have a FeatureStore
st = new GeoExt.data.FeatureStore({
...
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156 views
Does OpenLayers mergenewparams repeatedly hit a WMS server when you change the layer name?
Does mergenewparams repeatedly hit a WMS server if you change the layer name?
For example, you call the server with layer 'a' then you use mergewnewparams and call layer 'b', then you use ...
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470 views
How to fire a query from OpenLayers to GeoServer to fetch 'the_geom' column in PostGIS table?
I am coloring the polygon shapes of world_country. I have OpenLayers in my UI, GeoServer as server and PostGIS as db.
All I want is fire this query:
select the_geom from world_country where ...
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144 views
Problems with labels halo in OpenLayers
Draw label as follows:
var styleMarkersLabels = new OpenLayers.Style(
{
strokeWidth: 2,
labelYOffset: 14,
label: ...
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80 views
Remake gxp class
I want to remake gxp.editFeature class. In standart class to edit object need to choose it on map. I want choose abject in list of objects and edit it.
So To do this i need make a new gxp.editFeature ...
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122 views
Geonode: add editing toolbar to OpenLayers' map
I've been asked to add an editing toolbar (for creating custom geometries and editing them) to the map object in Geonode's interface.
I've configured Geonode in development mode. I've noticed that, ...
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224 views
openlayers wms loaderror event get response text of
1.How do I get the http response text & error code from OpenLayers 2.12 WMS loaderror event ?
2.The WMS request returns returns http error code 500 with some response text, however, as per image ...
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275 views
Using Google Maps with OpenLayers for some zoom levels
I've had a search on here to see if this has come up but I've not found anything, sorry if this is a duplicate.
I'm trying to use the Google Maps layers with an OpenLayers site, but not for all zoom ...
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192 views
add description to a new polygon and save -> postgres + geoserver + openlayers -> wfs-t insert
actually it is possible to draw a new polygon with openlayers and save it over WFS-T-insert (geoserver wfs-t 1.1.0) in my postgres-db:
var save = new OpenLayers.Control.Button({
title: "Save ...
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64 views
How can we display an animated output for watershed management in openlayers
Here i'm using Tomcat(7.0)+GeoServer(2.1.3)+Openlayers(2.11).
How can we display an output like Flow of water for the forest watershed management application.
I have to show the water flow Based ...
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473 views
OpenLayers.Popup.FramedCloud won't autosize
I don't see why this shouldn't work, but it doesn't.. :P
var popuphtml="";
$.each(persons.persons,function(i,item){
if(item.in_loc == feature.attributes['locid'].substring(8)){
...
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360 views
Geoserver in LifeRay
Hi i want to use geoserver+openlayers in LifeRay portlet.
My main question its how to do this? I mean how to include geoserver in liferay, how to open geoserver's admin panel in liferay.
Next question ...
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59 views
OpenLayers Google Closure externs file
Has someone written Google Closure Externs file for OpenLayers that I can use freely ?
Externs file similar to those for jQuery, GoogleMaps, Underscore ?
Have to ask this before I create my own if ...
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193 views
OpenLayers - Switching to Google Basemap causes a flicker as it zooms to extent
I created and example based off of the spherical-mercator example example and placed it here. I made the bing road layer the default. If you zoom in on a location and then switch to a google layer ...
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188 views
A WMS layer fails to show at some scales
I am tring to overlay my WMS layer on Google but at a particular scale it doesn't show the data of my layer. What can be the problem?
<html xmlns="http://www.w3.org/1999/xhtml">
<head ...
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180 views
Openlayers WMS layer not diplaying in IE windows mobile 6 emulator
I am new to openlayers. I tried this example. I have published world shapefile to tiger workspace as 'country' layer to geoserver and want to access with WMS. The world map is getting displayed in IE ...
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126 views
Why can't Android phones render this KML poly?
Our outage map works well in browsers and most mobile devices. The map can be found here:
Test Outage Map
However, on Android phones the perimeter polygon is rendered as black. Have tried changing ...
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136 views
On the usage of Proj4Js->tmerc.js
I am using "proj4js & open layers" for my mapping.
I got projection & datum (which is based on "Transverse Mercator") of a local plane and
this plane is part of a grid which returns ...
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291 views
How to display indoor map using OpenLayers?
I created my osm file in JOSM, and i imported it to my database by osm2pgsql tool.
I created new layer in my osm.xml file, which selecting data with query:
select way from planet_osm_line,
(select ...
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96 views
How to reduce transparency for Openlayers using Map Composer?
Increasing transparency of Openlayers will increase the contrast of others layers. For sure, it will increase the esthetical aspect of maps.
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685 views
how can we save vector files in openlayers
i'm using Postgis + tomcat + geoserver + openlayers for my application.
with the help of some tutorial i have reached upto gettting feature information of layers.
Next i want to edit and save ...
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0answers
151 views
Mapnik not generating tiles for tilecatche
imported data by using Osm2pgsql, to get rid off all problems related to data conversion, i stored this as latlong (-l parameter).I created stylesheet, and i tested with python script and it was ...
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37 views
How to load WFS in jsFiddle?
I'm trying to implement a WFS service in jsFiddle for an OpenLayers map.
It works fine here:
http://openlayers.org/dev/examples/cql-format.html
My example of it is (the map loads but the filter ...
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341 views
OpenLayers + GeoServer + Oracle: WFS-Transaction update error
I am trying to implement wfs-t in a map application. tried using ArcGIS server wfs-t, and didn't make it since there is a lock mechanism while trying to edit a feature.ArcGIS WFS-T + OpenLayers; then ...
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635 views
How to speed up OpenLayers with WFS in IE?
I'm using Openlayers, Geoserver and noticed that IE is very very slow to display WFS layers. I haven't so many WFS features, about 300. Google base layer appears after 1 sec. but my two WFS layers ...
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923 views
OpenLayers Popup Anchored Offset Problem
I have an animation where I move a point along a line. At certain spots of that line I open a popup to show a picture. I want the popup to be centered on the point. It seems to work for some points ...
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165 views
Mapnik, TileCache, Apache2 - Setup&Debug
I'm trying to setup TileCache with Mapnik working on an Apache Server. Right now I don't see any tiles in my OpenLayers Framework in the webbrowser. I really ask myself where the problem is hidden.
...
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389 views
GeoNetwork opensource - Geoserver/Google Maps integration
I'm using GeoNetwork 2.6.4 and I would like to change the default base map to Geoserver, adding a Google Maps Satellite Layer.
Which is the best way? Any suggestions?
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34 views
Why is eraseGeometry method not called?
I'm extending OpenLayers.Renderer class. The problem is eraseGeometry method is not called. What can be wrong?
I need it to be called when features are out of the visible area.
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0answers
185 views
About event to Latitude and Longitude in C#
I am beginning to study Ready GXP and I would like to know which event receives Latitude and Longitude and passes them to the browser for execution in C#.
Could you help me ?
Thanks
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112 views
Geoserver Custom CRS IAU_Moon_2000
I am trying to setup a custom basemap using a GTiff in the IAU's Moon2000 projection (30100 or 30101). The basemap image was originally created through gdal_merge and gdalinfo returns the expected, ...
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139 views
How to add column “EDGE” in pgRouting?
I am a newbie in PostGis and pgRouting. I have installed and configured both on my windows PC, following FOSS4G tutorial. I am able to see the result in browser, using GeoServer and OpenLayers. ...
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187 views
Color polygons using SQL Database based Rules in Openlayers
I want the rules to be applied according to values in a database. Is it possible to include external database information that is not in the shapefile?
In spoken words the original rule is "Color all ...
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467 views
WFS success with error
I am trying to load WFS from geoserver. my geoserver is at localhost:8080 and webserver at localhost:80. Since there is a problem of crossdomain and my firebug showing "XMLHttpRequest cannot load ...
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18 views
Openlayers Vector Feature label not Visible in IE 8 but visible in Google Chrome…?
I have created a WEB MAP using Openlayers-Geoserver-Postgis....
The Label of one of the Vector feature layer is not visible in Internet Explorer 8(IE 8) ,but clearly visible in Google Chrome ...
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0answers
24 views
WMSGetFeatureInfo returns blank
I've been working on a WMS with a QuantumGIS server. So I've added the QGIS map as a layer to my OpenLayers map on my webpage. Now I want to use the WMSGetFeatureInfo function of OpenLayers to get ...
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0answers
29 views
problem marker and popup
Displayed not correctly popup when clicking on the marker, the popup appears to the left in the corner of the screen and need to be near the token display. Help( here is my code:
var map;
var ...
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57 views
Onclick event with polygons
My requirement, when I clicked on any polygon on the openlayer I need to show the respective information in the popup.
Right now I am using the below code.
eventListeners: {
getfeatureinfo: ...
