[OSM-talk] Wood & Park mapnik carto anomaly?

Dave F. davefox at madasafish.com
Tue Sep 16 13:32:37 UTC 2014


On 16/09/2014 13:41, Matthijs Melissen wrote:
> In general, we render smaller landuse on top of larger landuse.

I find it surprising something as arbitrary as size is used as the 
defining factor. Comparing actual tags would surely make more sense.

> That gives sometimes unexpected results if two landuse areas overlap 
> each other only partially. However, I can't think of any better 
> ordering. In the old rendering, the overlap was visible because we 
> rendered park transparent. However, we removed the transparent 
> rendering because it often gives counterintuitive colours. 

And now there's no colours.

Dave F.

> The old rendering of this place is a good example: you wouldn't really 
> guess that the middle green colour denotes an overlap of wood and 
> park. So I don't think this is something we can really fix on the 
> rendering side. -- Matthijs 
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