highlighting a feature in mode=map

[Fischer, Brian]

Hi John,

I am not aware of a way to highlight a feature using mode=map, but
another technique I use is to create a transparent image that is stacked
on top of your main map image.  Then use some javascript that set's this
top image's src with a URL that looks something like this
http://douglas.mapmorph.net/cgi-bin/mapserv.exe?mode=nquerymap&map=/doug
las_mapmorph/mapmorph/douglas_queries.map&mapext=632381.525426633+155753
.54781032618+654398.6836237176+172737.2848856585&mapsize=678+523&layers=
parcel_query&mapshape=640694.7886986885+169847.12695123293+640694.788698
6885+169848.12695123293+640695.7886986885+169848.12695123293+640695.7886
986885+169847.12695123293&mapsize=678+523

I've found this technique works very well. You can see it working in one
of my applications at http://douglas.mapmorph.net/mapmorph/

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 John Cole
Sent: Tuesday, April 10, 2007 10:00 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] highlighting a feature in mode=map

Is it possible to highlight a feature when using mode=map?  I've tried
setting up the qlayer and qstring to select a feature by a gid, but I'm
not getting the desired results.

What are the recommended ways of highlighting a feature without
returning additional information about the feature (I have an ajax call
that has already returned that info).

Thanks,

John
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