Showing multiple layers using one checkbox

[Fischer, Brian]

If you want to always show the legend no matter what layers are turned
on or off.  I would just pregenerate the legend once and have it linked
to a static image.  No reason for mapserver to generate this everytime
the map changes on the fly when nothing in the legend is changing.  The
easist way to do this is use the legend utility that comes with the
mapserver download.  Just temporary set all your layers to on and run
the utility.  It will generate an image to use.  The easiest way to
handle the group layers is to only put the name in one of those layers
instead of all.

Hope this helps,
Brian 


Brian Fischer
Houston Engineering, Inc.
Maple Grove, MN
(763) 493-4522

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Bradley Mclain
Sent: Sunday, February 04, 2007 10:29 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Showing multiple layers using one
checkbox

Excellent just what I was looking for thanks.

Any chance you know how to fix up my legend now, there are two things
wrong with it. Firstly I want it to show the name of the groups not the
layers and secondly, I want it show them even when they are unticked.
currently they dissapear off the key when unticked.

Brad




>From: "Fischer, Brian" <bfischer at HOUSTONENGINEERINGINC.COM>
>Reply-To: "Fischer, Brian" <bfischer at HOUSTONENGINEERINGINC.COM>
>To: MAPSERVER-USERS at LISTS.UMN.EDU
>Subject: Re: [UMN_MAPSERVER-USERS] Showing multiple layers using one 
>checkbox
>Date: Sun, 4 Feb 2007 21:57:35 -0600
>
>Brad,
>
>The easiest way to do this would be to use the GROUP parameter in the 
>mapfile.  This would turn all layers on with the same name in the GROUP

>parameter.
>
>Another option is to use a javascript function to alter the layers list

>that is passed to the CGI on the OnClick event of the checkbox.
>
>-Brian
>
>________________________________
>
>From: UMN MapServer Users List on behalf of Bradley Mclain
>Sent: Sun 2/4/2007 4:12 PM
>To: MAPSERVER-USERS at LISTS.UMN.EDU
>Subject: [UMN_MAPSERVER-USERS] Showing multiple layers using one 
>checkbox
>
>
>
>Ok I currently have a mapfile which has multiple layers which make up 
>my image. I have set it up so that you can use a checkbox to turn these

>on and off. What I want to do however is combine two of them into the 
>one checkbox.
>
>E.g. Currently I have two different shapefiles making up a boundary for

>a property. They are defined in seperate layers in the mapfile. I want 
>them to both display when I tick a "Property Boundary" checkbox.
>
>Brad
>
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