On Thu, 2009-10-08 at 22:31 +0200, Genis Pujol Hamelink wrote:
> I know I can set the opacity of the polygon to 0, but how can I set
> the background of the map to transparent?
<Map bgcolor="transparent" ...
or
m.background = Color('transparent')
If you are using png256 format tiles then you may need to upgrade to a
newer version of Mapnik or switch to png. Old Mapnik versions would lose
the transparency when performing the conversion to 256 colours.
Jon
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