[mkgmap-dev] default style and underground pipelines

Thu Mar 13 08:28:39 GMT 2014

Hi Marko,

thanks for reporting this. I did not change
two routines to use high precision coordinates.

See 
http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3109
for details.

Gerd

> Date: Tue, 18 Feb 2014 11:04:59 +0200
> From: marko.makela at iki.fi
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] default style and underground pipelines
> 
> Hi Gerd,
> 
> >is it intended that these ways are placed in the map?
> >sample:
> >http://www.openstreetmap.org/way/60575011
> >
> >man_made=pipeline
> >type=water
> >location=underground
> >
> >This rule in lines fires:
> >
> >man_made=cable|(man_made=* & man_made ~ '.*pipe.*')
> >{name '${name} (${operator})' | '${name}' | '${operator}' }
> >[0x28 resolution 23]
> 
> I wrote this rule with visible features in mind, such as oil or gas 
> pipelines in rural areas. In well-mapped urban areas, this can cause 
> unnecessary clutter, just like subways and tunnels with access=private, 
> which are being omitted by the default style.
> 
> Maybe there should be a way to limit the visibility of some objects 
> based on the map density or nearby map features. If a cycleway or 
> highway is parallel to a pipeline, then the pipeline should be hidden 
> except maybe in resolution=24. Likewise, if a cycleway is parallel to a 
> highway, it should be hidden at lower zoom levels. If there are two 
> antiparallel oneways for a highway=*, only one should be generated at 
> lower zoom levels.
> 
> Best regards,
> 
> 	Marko
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