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

[Piero Campa]

SELF-RESPONSE: what I was *really* looking for is the LAYER::*OFFSITE*
parameter.  :DDD

''''
    OFFSITE [r] [g] [b]
        Sets the color index to treat as transparent for raster layers.
''''

References:
 -
http://osgeo-org.1560.x6.nabble.com/transparent-Geotiff-tp3776812p3776818.html
 - http://mapserver.org/mapfile/layer.html



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