can layers be linked?

[LITTLE Nelson]

Hi Guillaume,

Thanks for your reply. Unfortunately I am using Java MapScript and there is no "getLayersIndexByGroup" or similar functionality.

Thanks,
Nelson

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of Guillaume Sueur
Sent: Monday, 18 June 2007 5:24 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] can layers be linked?

Hi Nelson,

You can use the GROUP attribute for each layer, setting it to the same 
value (ex : GROUP "COMPOSITE")
they'll not be linked, but you'll be able to retrieve thse layers using 
the group name :
$aLayers = $pMap->getLayersIndexByGroup("COMPOSITE")
and then loop on the $aLayers array to switch then on/off

Regards,

Guillaume SUEUR


LITTLE Nelson a écrit :
> Hi,
> 
>  
> 
> I would like to link two layers of different geometry types. 1 layer 
> contains points, the other layer contains lines. The points and lines 
> are shown together to display a composite object on a map. If the user 
> no longer wants to see that composite object on the map then I would 
> like to turn off both of the layers. I am sure I can do it 
> programmatically, but I would like to know if they can be linked in the 
> MapFile?
> 
>  
> 
> Thanks,
> 
> Nelson
> 

-- 

Guillaume SUEUR

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