[mapserver-users] changing PROCESSING directive through URL?

[John Maurer]

Hi MapServer Users,
I'm not having any luck modifying a PROCESSING directive for one of my 
raster layers through a URL. Specifically, I'm trying to modify the min 
and max values of the SCALE directive to allow the user to flexibly 
control the contrast stretch of the image. In the form URL, I've tried 
tacking on the following CGI parameter with no luck, where "moa" is the 
layer name and "%3D" is used as the URL encoding for the equals sign:

&map_moa_processing="scale%3D15000,17000"

Anybody done this kind of thing before and gotten it to work? If so, 
what's the trick? Thanks for your time!
Best Regards,
John Maurer

-- 
John Maurer
Web/Database Applications Engineer
National Snow and Ice Data Center (NSIDC)
University of Colorado at Boulder
http://cires.colorado.edu/~maurerj
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