[Tagging] natural=bay as nodes are evil

Christoph Hormann chris_hormann at gmx.de
Mon Oct 27 20:40:10 UTC 2014


On Monday 27 October 2014, Ilpo Järvinen wrote:
>
> IMHO, the most controversial thing in this all is that the approach
> Christoph is proposing would require us to not map natural=bay but
> "natural=bay_entry" instead, and that is obviously exactly where the
> fuzzy part is. That is, a mapper would be forced to place bay nodes
> into the place where nobody can say for sure if it's in the bay or
> not.

Then you have misunderstood me - i am not suggesting any change to the 
current mapping practice (including the option to map as a polygon when 
deemed appropriate by the mapper).

If you want to formulate a formal mathematical rule for where the node 
for a bay is best placed: Place it so the variance of the distance of 
the node to the bay's shores is minimized.  Most existing nodes comply 
with this rule remarkably well.

-- 
Christoph Hormann
http://www.imagico.de/



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