[mapserver-users] Raster overlay question

[TCHaddad]

Hello list,

Until now, my use of raster data within Mapserver has been limited to displaying tiled Tiffs as backgrounds to my vector data.

However I have some raster data which I am interested in using as an overlay on top of vector data (and other rasters) if possible. Are translucent solid colors possible for any of the raster formats that Mapserver handle?

I would probably classify my data into about 12 classes, one of which I would not draw (invisible), and the remainder of which I would like to draw with a translucent color so that vectors and background imagery can be seen through the colors.

I guess what I am wondering is if Mapserver supports "Opacity" for raster classes...

my current mapserv version is:

Mapserver version 3.6.0 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP SUPPORTS=PROJ SUPPORTS=TIFF SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT INPUT=EPPL7 INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

thanks for any suggestions or ideas,

TH