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[mkgmap-dev] mapnik TYP, forest and wetland

From Andrzej Popowski popej at poczta.onet.pl on Mon Nov 2 18:49:54 GMT 2020

Hi Karl,

 > I tried makling a map using the same draworder
 > Type=0x050,2
 > Type=0x051,2
 > plus using the option --order-by-decreasing-area

This is some kind of trick, not a general solution. There is no 
guarantee, that GPS will follow the order of objects in img.
And I'm sure you can find examples, where bigger polygon should be drawn 
over a smaller one.

Wetland is semi-transparent, you can set higher draw-order for it and 
forest below still will be visible.

Best regards,

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