[Tagging] natural=bay as nodes are evil

Christoph Hormann chris_hormann at gmx.de
Tue Oct 28 09:16:25 UTC 2014


On Tuesday 28 October 2014, Janko Mihelić wrote:
> > 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.
>
> What's the best place for the node in Guantanamo Bay? Is the current
> node well placed?

I'd say it is.

Note the algorithm i sketched in its simple form would seriously 
underestimate the bay size due to the peninsula in the middle - same 
problem as small islands in the bay which i already mentioned.  It is 
fairly easy though to detect and fix this (by making use of the fact 
that a bay is 'mostly surrounded by land').

On a general note the established tagging conventions are of course not 
well suited for tropical coastal landforms dominated by mangrove.  
Technically you might also consider the inner bay a lagoon rather than 
a bay.

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



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