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Questions tagged [openlayers]

Use when the version you are using of the OpenLayers JavaScript client toolkit is 3 or later

1
vote
1answer
182 views

Markers > 50000 Overlays on OpenLayers [duplicate]

I would like to know the way to overlay 50000 markers on OpenLayers, and would like to know how many OpenLayers can support?
4
votes
2answers
3k views

Drawing pie charts with vectors with OpenLayers?

Has any one got any examples of drawing pie charts with vectors as markers with OpenLayers?
1
vote
1answer
506 views

Is it possible to import OpenLayers data to PostGIS?

I'm struggled with the following problem: I'd like to import an OpenLayers layer to PostGIS in order to have the layer information for each grid point in a table. I know how to create a layer from ...
0
votes
1answer
465 views

How to query OpenStreetMap data served by GeoServer?

We have a specific point and would like to count all features in a circular area with center at that specific point. The data is: Stored in a shapefile layer created in QGIS Served by GeoServer ...
5
votes
1answer
262 views

How to display some Ushahidi's layers (WFS) in my Web portal?

I'm working on a VGI Web portal. I'm using OpenLayers and the application is running through the TomCat server. I would like to know if it's possible to display layers from Ushahidi or others VGI ...
1
vote
1answer
417 views

How can I change the CSS style of the GeoServer rendered map produced when I click on “Open Layer ”Tab under “Common format”?

I have tried many times with left no stone unturned, but all efforts came in vain. I might be of less knowledge in this area. Then through surfing I found this site as a newbie. I will be very ...
4
votes
1answer
2k 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): shapefile(s), standard epsg:4326 lat/lon projection; ...
11
votes
1answer
18k 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 ...
5
votes
3answers
1k views

Search by street name/postcode in OpenLayers

Can anyone help me search by street name in OpenLayers? I essentially want to be able to search for streets/postcodes in OpenLayers in the same way I can search on Google maps. Is this possible?
3
votes
2answers
60 views

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

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 a simple overview about ...
3
votes
3answers
680 views

Use Esri PersonalGeodatabase layers in OpenLayers

I would like to know if it is possible to open a Personal Geodatabase of Esri with OpenLayers with FileGDB_API_VS2010_1_2
10
votes
2answers
2k 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 ...
4
votes
1answer
4k views

How can I remove a layer from layerswitcher in OpenLayers?

I have several vectors and WMS layers in layer switcher. But I don't need these layers to be displaying in layer switcher. How can I remove these layers from layer switcher?
1
vote
0answers
368 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 ...
0
votes
2answers
701 views

How to create GIS like Uster?

I downloaded QGIS, GeoServer, OpenLayers, Ext, GeoExt, qgis-web-client and osgeo, and I have map shapefiles. I would like create a web site like the Uster site. I need help, can you provide tutorial ...
9
votes
3answers
12k views

How to get names of all layers in a store in GeoServer using OpenLayers

I have strict requirement to retrieve names of all layers in a GeoServer store using OpenLayers. I've gone through the post here, but it doesn't answer my question. I've also gone through GeoServer's ...
3
votes
1answer
599 views

Halo in OpenLayers (Line, Vector)

How to make a halo around the line of one pixel using OpenLayers? For example, the line (vector) has a blue color and its frame (one pixel) has a black color.
2
votes
0answers
314 views

How do you emulate a right click on a tablet/mobile device using OpenLayers?

I'm trying to make my OpenLayers mapping application work for mobile devices and one feature I haven't figured out how to emulate is the 'handleRightClicks' Control Click option. Anyone know how to ...
0
votes
1answer
560 views

How to cluster KML features in OpenLayers

Is it possible to cluster KML features in OpenLayers, and are there any samples? I can find separate samples for clusters and KML but nothing which handles both together.
1
vote
1answer
366 views

GeoServer + OpenLayers: How can I sum points in a selected polygon in my WMS layer

I have two layers: one representing admin boundaries (multipolygon), and the other representing population (multipoint). I've made it possible to select a polygon to display. For the displayed polygon,...
3
votes
1answer
376 views

How to draw line by scratching on map using OpenLayers?

Is it possible to draw line by scratching on the map using OpenLayers? I tried some examples, all the examples are drawing by clicking. I want to draw by scratching, just like drawing in normal life ...
4
votes
1answer
318 views

Can OpenLayers plugin be faster?

Can the OpenLayers QGIS plugin be modified to have better map loading performance? I use only Google satellite/maps.
2
votes
1answer
5k views

Set Up WFS Service on MapServer and display in OpenLayers

I have used following map file to create the WFS service on MapServer but struggling to display the service output using OpenLayers. Please suggest some links to use WFS service in OpenLayers. MAP ...
7
votes
3answers
15k views

Is there a On Map Move event in OpenLayers?

In my OpenLayers web app I have registered an onmousemove event which performs certain functions. What I am really after though is a way to register and handle the user panning or zooming the map.
5
votes
1answer
2k views

Loading older google satellite image with OpenLayers plugin in QGIS?

I am using the OpenLayers plugin in QGIS. I want to use the google satellite layer, but there is a cloud on the specific image. Is it possible to load one of the older google satellite images? ...
3
votes
1answer
856 views

WMS and WFS Services in MapServer

I am new to MapServer. I was trying to get WMS and WFS services started but could not get any simple article to start the services from scratch and display service data into OpenLayers. Please ...
4
votes
1answer
6k views

How to reverse geocode without Google?

I have a basic tracking system i've written with OpenLayers using google and openstreetmap and I want to use geocoding to get street names etc However, I'm a bit confused. I was hoping there was a ...
7
votes
5answers
5k views

Using OpenLayers Selectfeature get mouse position? [closed]

How do I get mouse coordinates after a SelectFeature, which returns the feature by itself?
6
votes
1answer
780 views

Do OpenLayers maps always show/flash an empty screen while zooming?

When double-clicking on an OpenLayers map, the screen is momentarily blank while the next zoom level draws. Is this avoidable? It's not ideal, given that many other mapping APIs show a smooth zooming ...
2
votes
3answers
468 views

Looking for PDF map downloading capability in OpenGeo GXP

I am looking for a plugin to OpenGeo GXP in order to download maps in PDF format. Could you help me?
1
vote
0answers
252 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#.
59
votes
7answers
12k views

Creating Vector Polygons with rendering performance like GISCloud?

I have been looking for a solid solution which would allow me to create a web map and overlay vector polygons without taking forever to load such data with the goal of allowing me to make each polygon ...
5
votes
2answers
3k views

Printing maps from OpenLayers with a Google Maps base layer

I need to implement an automatic pdf report generator on a web site. In the generated pdf file I need to insert images from maps extracted from OpenLayers with a Google Map base layer. On top of ...
6
votes
2answers
3k views

OpenLayers tooltips

Please point me to examples of combining OpenLayers and any external tooltip libraries like this. I try to use native OpenLayers tools for building tooltips here, but they not flexible and ...
26
votes
6answers
6k views

Creating a small web-mapping/map-tiling service

I am looking for a small-scale and easy way to present one or more polygon shapefiles online (on a municipal website without any existing map-server infrastructure, to be precise). Right now, I'm ...
27
votes
6answers
12k views

Maximum number of point features in an OpenLayers vector layer

In your experience, how many point features can be added to an OpenLayers vector layer (new OpenLayers.Layer.Vector("Point Layer")) before it goes unusably slow? My use case is to display points from ...
8
votes
3answers
3k 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 database table and retrieve them (trivial tasks). Which is better MySQL or PostGIS? Can anybody give ...
4
votes
2answers
5k views

Restrict CQL filter to a specific BBOX

I need to filter an OpenLayers layer using a CQL filter to an specific Bounding Box. Is it possible? Something like this isn't working: igh > 5000 AND bbox(igh,20786691,22051867,-305577260,-...
22
votes
7answers
10k views

Options for displaying PostGIS vectors in OpenLayers

I am very new to web-mapping, so this question may be a little misguided. I want to have a very simple web interface using OpenLayers (or even Google Maps if that will be easier) which can display a ...