[OpenLayers-Dev] Layer hierarchy

[CHAPUIS Bertil]

Parameterizable layer could be for example a WMS Layer which can understand the getCapabilities query of the web service and allow to customize the LAYERS WMS parameters in the request arguments. It could be done with sub checkboxes in the Layer Switcher. So one image is generated but you can choose how.

Is it already possible? I havn't investigate the question.

Bertil

-----Original Message-----
From: dev-bounces at openlayers.org on behalf of Ed Dowding
Sent: Thu 12/7/2006 8:34 AM
To: blevy at taic.net; Curtis W. Ruck; dev at openlayers.org
Subject: [OpenLayers-Dev] Layer hierarchy
 
You might like to look at this ticket for some ideas on layer hierarchy. I'm not sure why it's closed actually..

http://trac.openlayers.org/ticket/71 


 



Ed


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From: dev-bounces at openlayers.org [mailto:dev-bounces at openlayers.org] On Behalf Of Brian Levy
Sent: 07 December 2006 00:24
To: 'Curtis W. Ruck'; dev at openlayers.org
Subject: Re: [OpenLayers-Dev] Advanced GIS functionnalities

I'm currently working this concept for a client so that we can display a hierarchy of WMS layers.  Not very difficult, I'm using a treeview component which allows me to specify the parent of each node.  One thing to keep in mind is that you must keep the layers indexed properly, otherwise the GetMap request (when working with OpenLayer.WMS) orders the layers wrong on the request and some layers are hidden undereath others. 

-brian

________________________________________
From: dev-bounces at openlayers.org [mailto:dev-bounces at openlayers.org] On Behalf Of Curtis W. Ruck
Sent: Wednesday, December 06, 2006 4:16 PM
To: dev at openlayers.org
Subject: Re: [OpenLayers-Dev] Advanced GIS functionnalities

Even though i am unknown and just a lowly user, 
 
I would completly agree to having a grouped layer.  Where you can create layers inside it and turn them all on or off.
 
I actually think this would be fairly easy.
 
Hmm, maybe i will try making a .js for this one... good idea.
 
On the same note of advanced search queries, i think an identify type button would be quite excellent, i hardcoded one into my MouseToolbar.js (OL 2.2 release) with a tied event.
----- Original Message ----
From: Cameron Shorter <cameron.shorter at gmail.com>
To: CHAPUIS Bertil <Bertil.Chapuis at heig-vd.ch>
Cc: "Kralidis,Tom [Burlington]" <Tom.Kralidis at ec.gc.ca>; dev at openlayers.org
Sent: Wednesday, December 6, 2006 4:16:34 PM
Subject: Re: [OpenLayers-Dev] Advanced GIS functionnalities
We have discussed sub-layers on the WMC/OWS-Context and Mapbuilder lists.

I think the current idea is to set up a "group" flag for a layer so that 
multiple layers can be grouped in a legend in a hierarchical manner.

Could you please expand on your idea of the "Customizable Layer".

CHAPUIS Bertil wrote:
> Hello,
> 
> We (at Camptocamp SA) are very impressed about the interactivity of OpenLayers.
> 
> We are seriously thinking of using the OL API with advanced GIS server functionalities. Our experience with CartoWeb development could bring a lot to the OL community.
> 
> Advanced GIS functionnalities may include:
> 
> - Customizable layer (one image with several sub layers)
> - Advanced search queries with complex highlighting on the result images
> - Routing
> - And more...
> 
> Are there already investigations to standardize the communication between the client and the server (XML, JSON, WFS, WPS, ...) ? Javascript often needs proxy severs to use Web services. So we think now would be a good time to discuss how to efficiently use the server.
> 
> Regards,
> 
> The Camptocamp team
> _______________________________________________
> Dev mailing list
> Dev at openlayers.org
> http://openlayers.org/mailman/listinfo/dev
> 


-- 
Cameron Shorter
http://cameron.shorter.net
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