get rid of a layer in a map without deleting it in server?

[GeorgiannaStrode]

A quick question:
How can I get rid of a layer in a Flex application(not to show up), but keep it in the map server and ArcMap software?
I think it might be some codes in config.xml file, in these following lines:

      
<map>
<operationallayers>
 
   <layer url="..." />
 
 
        </operationallayers>
    </map>

probably I can add some lines such as <exclude .. >

Anyone having any ideas on that? Thanks in advance

[DasaPaddock]

If the layer type is dynamic, arcims or wms, you can set the visiblelayers in the layer tag to only the layers you want to be on.

See:
http://help.arcgis.com/en/webapps/flexviewer/help/layer_tag.htm

[GeorgiannaStrode]

I used to write codes like:

<layer label="Control Points" type="dynamic" visible="true" alpha="1"
   url=".../MapServer" />

and this enabled me to have assess to all the layers in the mapserver.

Now that I tried:

<layer label="Control Points" type="dynamic" visible="true" alpha="1"
   url=".../MapServer/1" />
   
    <layer label="Control Points" type="dynamic" visible="false" alpha="1"
   url=".../MapServer/2" />

but in this way no layer come out. Is there anyway to split these layers up and set the visible attribute of them separately?

[DasaPaddock]

You can control which layers are visible in the service like this:

<layer label="Control Points" type="dynamic" visible="true" alpha="1"
   url=".../MapServer" visiblelayers="0,1,2" />

[GeorgiannaStrode]

actually the difference made by

visiblelayers="0,1,2"

is just to choose which layers to be on, and which to be off by default. I want those layers to not just be off, but not in the list at all. But for some reason, I dont wanna delete them in the server and ArcMap.

[DasaPaddock]

This isn't currently supported. It would require customization to the TOC component inside the com.esri.viewer.components.toc package.

[RobertScheitlin__GISP]

Dasa,

   So you guys have no plan to add layerDefinitions support to applicable layers in the viewer?

[DasaPaddock]

Dasa,

   So you guys have no plan to add layerDefinitions support to applicable layers in the viewer?

You can set a definitionexpression on a "feature" layer, but we haven't had requests to add support for this to the config for "dynamic" layers. Would you have a use for this? I don't think it would help with what I think Georgianna is looking for.

[RobertScheitlin__GISP]

Dasa,

   OK, thanks for the info I just thought that if the layer had a layerDefinition then the toc would honor that as well and not show the other layers of the map service.

[GeorgiannaStrode]

This isn't currently supported. It would require customization to the TOC component inside the com.esri.viewer.components.toc package.

Since it's not supported, I gave up the trying on that. Thanks for telling me. But that feature might be really helpful if it is supported someday