[mkgmap-dev] Water polygons in default style

Fri Jun 5 12:59:26 BST 2015

Hi Carlos,

please check, I think the rules 
landuse=basin|landuse=reservoir & area_size()>125000 [0x3f resolution 18]
landuse=basin|landuse=reservoir & area_size()>35000 [0x3f resolution 20]
landuse=basin|landuse=reservoir [0x3f resolution 22]

are missing brakets.
(landuse=basin|landuse=reservoir) & ...

Gerd

Carlos Dávila-2 wrote
> According to wiki [1] landuse=reservoir and 
> natural=water+water=reservoir are equivalent, but the latter (and 
> preferred) form is missing in default style.
> Another thing to comment is that all water bodies are treated the same 
> in default style, despite they can vary from a few square meters (ponds) 
> to thousands hectares. I've been playing a bit with area_size() and 
> found some values that avoid too small water polygons at certain zoom 
> levels in MapSource (it may require some more test though).
> Below is current water_polygons file in my style. Do you think it's 
> worth including such rules in default style?
> landuse=basin|landuse=reservoir & area_size()>125000 [0x3f resolution 18]
> landuse=basin|landuse=reservoir & area_size()>35000 [0x3f resolution 20]
> landuse=basin|landuse=reservoir [0x3f resolution 22]
> 
> natural=bay [0x3d resolution 18]
> natural=glacier [0x4d resolution 18]
> natural=marsh [0x51 resolution 20]
> natural=mud [0x51 resolution 20]
> natural=wetland [0x51 resolution 20]
> natural=water & water=reservoir & area_size()>125000 [0x3f resolution 18]
> natural=water & water=reservoir & area_size()>35000 [0x3f resolution 20]
> natural=water & water=reservoir [0x3f resolution 22]
> natural=water & area_size()>125000 [0x3c resolution 18]
> natural=water & area_size()>35000 [0x3c resolution 20]
> natural=water [0x3c resolution 22]
> natural=waterfall | waterway=waterfall [0x47 resolution 21]
> natural=sea [0x32 resolution 10]
> 
> waterway=riverbank [0x46 resolution 20]
> 
> [1] http://wiki.openstreetmap.org/wiki/Key:water
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