[mapguide-users] Changing Visibility for one layer affects others

[nclayton]

It is at the very bottom of the drawing stack. The layer is pulling from an
aliased folder on the server and contains 595 ecw files. I'm not sure if
that could be a factor in this issue, especially since the layers do not
return once the raster layer is set to no longer be visible.



andrew.demerchant wrote:
> 
> Without looking at your code, I'm wondering if maybe your raster image 
> layer is above your other layers. I'd check your layer ordering. I know 
> how to do that in Mapguide Studio or Web Studio, but not so sure using
> code.
> 
> Andrew
> 
> 
> nclayton wrote:
>> Hi all,
>> I am trying to add functionality to toggle raster images on and off to my
>> map. I have the raster images on a layer called aerial. I am calling a
>> php
>> page with the following function call in the scriptFrame:
>>
>>         toggleLayer($sessionId,$mapName,"aerial");
>>
>> The function is:
>>
>> 	function toggleLayer($sessId,$mapName,$layerName){
>> 		try{
>> 			$userInfo = new MgUserInformation($sessId);
>> 			$siteConnection = new MgSiteConnection();
>> 			$siteConnection->Open($userInfo);
>> 			$ressvc =
>> $siteConnection->CreateService(MgServiceType::ResourceService);
>> 			$map = new MgMap();
>> 			$map->Open($ressvc,$mapName);
>> 			$tlyr = $map->GetLayers()->GetItem($layerName);
>> 			$tlyr->SetVisible(!($tlyr->GetVisible()));
>> 			$map->Save($ressvc);
>> 		}catch(Exception $e){
>>
>> 		}
>> 	}
>>
>> This is causing the layer to become visible, but it is also causing other
>> layers to not be visible. 
>> I've made a page with images showing what is happening, and it is located
>> at:
>>
>> http://www.tscmaps.com/issue.htm http://www.tscmaps.com/issue.htm 
>>
>> Thank you for your help
>>
>>   
> 
> -- 
> 	*Andrew DeMerchant*
> *Computer Technologist*
> ph.1-877-2GEMTEC x.163
> fax 506-453-9470
> 
> /GEMTEC Limited <http://www.gemtec.ca>
> /191 Doak Road
> Fredericton, NB, Canada
> E3C 2E6
> 
> 
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> 

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