[mapserver-users] Change Background Image Color Dynamically
Bill Thoen
bthoen at gisnet.com
Mon Mar 9 07:12:21 PDT 2009
I've got a layer of USGS DRG's where I set the OFFSITE parameter to
black to hide the excess bitmap at the edges of the DRGs. But this also
makes black lines , text and other black graphic elements IN the map as
transparent, washing them out. So I set IMAGECOLOR to black to sharpen
them up.
However, at scales beyond those appropriate for the DRGs I want to set
the background color back to white. So is there some way that I can
either use a black background only when the DRG layer is visible, or
dynamically change the background color as the map scale changes?
TIA,
- Bill Thoen
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