id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
933	Transparency (alpha blending) for RASTER layers	franck@…	sdlime	"{{{
At the moment we can choose a transparent color for a RASTER layer using OFFSITE.

What I would like is to overlay a RASTER layer over other layers and make this
RASTER layer 45% transparent.

We could introduce the keyword 
TRANSPARENCY dd
Where dd would be a transparency percentage from 0 to 100.

Applications: 
overlay a satellite weather map over a current map
overlay sea surface temperature over a bathymetric map
}}}"	enhancement	closed	high		MapServer C Library	unspecified	minor	fixed