Transparent Pixmap Symbol

[Randy How]

Thanks for the response Steve,

I've tried all sorts of variations for PNG and GIF, and it hasn't been
successful.

Any other options for "logo water-marking" maps from MapServer?  I was
excited about this approach, but I can't get a transparency for the fill.

Thanks again,
Randy

-----Original Message-----
From: Steve Lime [mailto:Steve.Lime at dnr.state.mn.us] 
Sent: Friday, August 24, 2007 4:35 PM
To: rhow at I3.COM; MAPSERVER-USERS at lists.umn.edu
Subject: Re: [UMN_MAPSERVER-USERS] Transparent Pixmap Symbol

Randy: I'm thinking we have a documentation issue here. I'm not sure that
the TRANSPARENT option is even supported anymore. Typically MapServer
respects the transparency of the image itself, so you need to create a
transparent GIF for that to work. Give that a shot and I'll check the source
(and update the docs) to make sure.

Steve


>>> Randy How <rhow at I3.COM> 08/23/07 9:09 PM >>>
I'm attempting to set the background transparency for a symbol that I've
created, but with no success.
 
My symbol definition
 
  SYMBOL
    NAME "logo"
    TYPE PIXMAP
    IMAGE "h2o_logos/logo.GIF"
    TRANSPARENT 0
  END
 
According to the reference setting a color index in the GIF sets the
transparency (i.e. TRANSPARENT 0).  Color index is 0 is black, and the
output map layer symbol is not transparent!
http://mapserver.gis.umn.edu/docs/reference/symbology/referencemanual-all-pa
ges
 
I've looked over this page and it only discusses PNG files.  I can't get any
of my PNG file variations to work either.
http://mapserver.gis.umn.edu/docs/howto/cartosymbols
 
Any help would be greatly appreciated,
Randy