[Geoserver-users] black tiles in nodata areas

Hi,

I set up a WMS in Geoserver with the image mosaic plugin. I have big tiles
(25x25km) for a polygonal area. When I seed the cache with TileCache I get
black tiles in those areas where I have no data. But for the no data area I
don't want any tiles, especially no black tiles. I can only define a
rectangular bounding boc and not a polygonal.

Is this in issue of TileCache or Geoserver?
Where can I define another color than black?
Can I define a bgcolor in the rastersymbolizer?

best regards
Jürgen
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