[mapserver-users] HTML Legend with Status Checking...

[Martin, Daniel]

You probably want a bit mask of 2 in your opt_flag.  Layers with STATUS off
still show, but layers out of scale don't show.  

[leg_layer_html opt_flag=2]


Per http://mapserver.gis.umn.edu/doc36/html-legend-howto.html :

1: If set, show layer even if out of scale (default: hide layers out of
scale). 

2: If set, show layer even if status is OFF (default: hide layers with
STATUS OFF). 

4: If set, show layer even if type is QUERY (default: hide layers of TYPE
QUERY) 

8: If set, show layer even if type is ANNOTATION (default: hide layers of
TYPE ANNOTATION) 


In my experience, opt_flag=2 is the most intuitive.

-Dan



-----Original Message-----
From: Mike Smith [mailto:nospam at cnrit.tamu.edu]
Sent: Monday, September 30, 2002 5:06 PM
To: mapserver-users at lists.gis.umn.edu
Subject: [mapserver-users] HTML Legend with Status Checking...


Hello,

    I've seen how you can make legends using PHP Mapscript that check to 
see whether a layer or class is in scale before displaying it in the 
legend, but no mention of how to do this if I'm not using Mapscript.  I 
have sub-classed many of my layers so that symbols show up in different 
sizes depending on how far zoomed in you are.  In other words, I'm using 
"MINSCALE" and "MAXSCALE" in my classes, but all of my classes show up 
in the legend and that's really annoying!  I want ONLY the in-scale 
symbol to show up in the legend as it does in the map...any tips on how 
to do this without Mapscript?  I see the "if" conditional statements in 
the HTML Legend How-to, but there's no status of "SCALE" to check with 
those statements... if I could put an if statement in my legend template 
that checked whether or not a class or layer was in scale, then I'd be 
in business...any way to do this?

Thanks!