[mapserver-users] Using IMAGECOLOR to create a transparency mask

[gwaldron]

I'm trying to use IMAGECOLOR to try to force all pixels of a certain color to
become fully transparent, but I am not having any luck getting it to work.

My output format it AGG/PNG, RGBA, TRANSPARENT ON.

I have a shapefile layer set to COLOR 0 50 100, and my map-level IMAGECOLOR
set to the same. I was hoping all the polys in the shapefile would render as
transparent pixels, but no luck; they just show up as blue polygons.

What am I doing wrong here? Thanks.

-----
Glenn Waldron * Pelican Mapping * gwaldron at pelicanmapping.com * +1 703 652
4791
-- 
View this message in context: http://n2.nabble.com/Using-IMAGECOLOR-to-create-a-transparency-mask-tp2270688p2270688.html
Sent from the Mapserver - User mailing list archive at Nabble.com.