[mapserver-users] Transparency of overlapping PNG-symbols

[Stephan Holl]

Dear list,

while developing an application with PNG-symbols rendered on top of a
map I have encountered a problem if the PNG-symbols overlap each other;
artefacts are present (see attachment).

The Symbols are defined as following:
SYMBOL
  NAME "Batnight"
  TYPE PIXMAP
  IMAGE "./images/batnight.png"
  TRANSPARENT 0
END

Used outputformat:
OUTPUTFORMAT
    NAME agg
    DRIVER AGG/PNG
    IMAGEMODE RGB
END

Is there an easy way to let them disappear or is this a (perhaps known)
bug in MapServer?

I am using the AGG-renderer and MS 5.6.6 though.

TIA

	Stephan

-- 
Stephan Holl <stephan.holl at intevation.de> | Tel.: +49 (0)541-33 508 3663
Intevation GmbH, Neuer Graben 17, 49074 OS  |  AG Osnabrück - HR B 18998
Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
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