[mapserver-users] Hide Layers on HTML legend where filtered r esults are null

[Martin, Daniel]

Steve,
Without Mapscript, I suspect that's going to be hard to do.  The two ways I
know of to hide a layer in the legend is:
1) Setting the status to off  -> requires not using an opt_flag of 2.
2) Using the order_metadata feature, and setting the metadata value to a
negative number.  In this case the status is irrelevant.
 
I'm don't think you can do either as the result of a filter without
Mapscript.  Perhaps someone else knows a way....
 
-Dan
 

-----Original Message-----
From: Palmer, Steve [mailto:Steve_Palmer at lpsg.com]
Sent: Thursday, November 14, 2002 11:27 AM
To: mapserver-users at lists.gis.umn.edu
Subject: [mapserver-users] Hide Layers on HTML legend where filtered results
are null



I've waded through hundreds and hundreds of archived messages and have not
found any guidance and am hoping someone can point me in the right
direction.

I am displaying layers on an HTML legend 

The content of those layers is controlled by passing a filter value as part
of my GET string (map_mylayername_filter=somevalue)

If the filter doesn't "find" any records, I would like to be able to hide
that layer on my legend 

Any tips/guidance that anyone could provide would be greatly appreciated 

MapServer 3.6.1, WinNT/IIS4 - Win2000/IIS5 

Thanks 

****************************************************************************
********************************* 
Steve Palmer 
GIS Developer 
406-728-9323 x206 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapserver-users/attachments/20021114/75b560b6/attachment.htm>