[mapserver-users] Black background with palette
woodbri at swoodbridge.com
Mon Nov 30 10:31:32 EST 2009
Do you have IMAGECOLOR "#000000" set at the MAP level? Also I would put
the background color as the first color in the mypalette.txt file and
see if that helps.
Alexandre Dube wrote:
> == problem ==
> I'm pretty sure I saw this problem on the list somewhere, but I
> couldn't find the actual thread so here it is : while using
> agg & palette option, when there's no data to draw, instead of having
> the backgroundcolor drawn it's all black instead.
> How can I go around this problem ?
> == my actual need ==
> I want to produce smaller images. Currently, my getMap renders a 66K
> png image. With the palette, it's down to 17K but with a black background.
> == ouputformat definition ==
> NAME aggpng24
> DRIVER AGG/PNG
> MIMETYPE "image/png"
> IMAGEMODE RGB
> EXTENSION "png"
> FORMATOPTION "INTERLACE=OFF"
> FORMATOPTION "PALETTE_FORCE=ON"
> FORMATOPTION "PALETTE=/my/path/mypalette.txt"
> TRANSPARENT ON
> FORMATOPTION "TRANSPARENT=ON"
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