Hi,
as Russ Hore also pointend, it's an OpenLayers question, here's why:
I see you are using the GeoServer "OpenLayers Preview" as a base to build
your map.
I highly discourage that, because that page has the only required tools to
preview the selected layer.
If you want to start learning OpenLayers I recommend you this tutorial:
http://docs.openlayers.org/library/introduction.html
It's a step-by-step tutorial, very practical.
The reason your map becomes blank it's because the OpenLayers library
provided with the Preview page doesn't include the LayerSwitcher control.
Trying to load that Control breaks the code execution, preventing the
loading of the map.
As you can see in the source code, there is a comment to warn you about
that.
<!-- Import OpenLayers, reduced, wms read only version -->
<script src="
http://localhost:8080/geoserver/openlayers/OpenLayers.js";
type="text/javascript">
I hope this helps.
Regards
Lorenzo Pini
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On Thu, Oct 10, 2013 at 12:18 PM, Ammar <ammar8...@yahoo.com> wrote:
> Thanks for your reply Lorenzo. This is part of the code, which I think is
> related to my problem:
>
> [omitted]
>
> Regards,
> Ammar
>
>
> ------------------------------
> *From:* Lorenzo Pini <lorenzo.p...@geo-solutions.it>
> *To:* Ammar <ammar8...@yahoo.com>
> *Cc:* "geoserver-users@lists.sourceforge.net" <
> geoserver-users@lists.sourceforge.net>
> *Sent:* Thursday, October 10, 2013 11:53 AM
> *Subject:* Re: [Geoserver-users] Using LayerSwitcher() With a Layer Group
> of WMSs
>
> Hi Ammar,
>
> WMS is a great tool for showing layers altogether.
> To pinpoint your issue it will be usefull to have the part of the code you
> are using to load the layers into the map and to display the layerswitcher.
> Can you please provide a little snippet?
>
> Thank you
>
> Lorenzo Pini
>
>
>
> On Thu, Oct 10, 2013 at 11:08 AM, Ammar <ammar8...@yahoo.com> wrote:
>
> Hello.
>
> I am newbie to GeoServer and OpenLayers.
>
> I am trying to setup a WMS that consists of 6 layers of thematic maps on
> GeoServer. I tried to add LayerSwitched() to the code but the map just went
> blank. My question is: is it possible to add LayerSwitched for a Layer
> Group of WMSs? If no, is there another way to show 6 layers of thematic
> maps (somehow at the same time) on GeoServer?
>
> Thanks in advance.
>
> //Ammar
>
>
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