[mapserver-users] offsite

[Ed McNierney]

Kent -

I'm not sure I understand exactly what the "background" you're referring to is, but the OFFSITE keyword requires an indexed TIF image with pixels whose index value is exactly the value provided by OFFSITE.  If you are leaving some pixel values "undefined" (rather than initializing everything to your OFFSITE color) then the non-image pixels may just be filled with trash that's dependent on your image-processing software, the phase of the moon, and the odds of the Red Sox winning the pennant.

	- Ed

Ed McNierney
Chief Mapmaker
TopoZone.com
ed@topozone.com
(978) 251-4242


-----Original Message-----
From: Kent S Ridl [mailto:kridl@cs.und.edu]
Sent: Monday, June 10, 2002 4:31 PM
To: mapserver-users@lists.gis.umn.edu
Subject: [mapserver-users] offsite


hey all!  just curious if an image has to be prepped a certain way for
offsite to work, or if it only works with certain colors.  the reason i
ask is this... i am taking a color jpg image and whacking it down to an
indexed tif to use.  offsite won't work at that point, but after i fill
the background of my tif with all-black, it does.  anyone know why that
is?  thanks!

kent