[Mapserver-users] Q: Dynamic Legends

[Liz Godwin]

I don't think actually that this is possible, at least not in the
current release.  

The legend will show all classes that are capable of being drawn,
regardless of wether they are actually visible or not.  That is to say,
the opt_flags WILL allow you to specify to include layers/classes that
are within the scale (set min and max values) and if the layer is being
drawn (status IN/OFF/DEFAULT).

I have seen postings in the past referring to this, and ways around it,
but they all involve some mapscript of some sort.

If you do find an easy/rather quick way, be sure to share it with the
list.  I am sure there are many that would interested in finding a
solution, I know I am.

Liz Godwin

>>> "Matt Doggett" <mdoggett at coas.oregonstate.edu> 01/29/04 11:29AM
>>>
I believe HTML legends will do the trick. In the legend_template.html
file you could specify [leg_class_html opt_flag=12] for example. see
the
HTML legend How-To for more details about the opt_flag bit mask.

http://mapserver.gis.umn.edu/doc40/html-legend-howto.html 

MD

>-----Original Message-----
>From: mapserver-users-admin at lists.gis.umn.edu
[mailto:mapserver-users-
>admin at lists.gis.umn.edu] On Behalf Of Jean-Henry Berevoescu
>Sent: Wednesday, January 28, 2004 8:12 PM
>To: mapserver-users at lists.gis.umn.edu 
>Subject: [Mapserver-users] Q: Dynamic Legends
>
>
>Hi,
>Is there a way to have the legend dynamically show only the classes
of
a
>layer actually
>shown in a map (not the whole defined set in the mapfile)?
>
>Jean
>
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