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[mkgmap-dev] WG: Please help

From Ticker Berkin rwb-mkgmap at jagit.co.uk on Wed Feb 1 16:04:36 GMT 2017

Hi Gerd

I've plotted the outer data. Not quite well enough to see all the
directions of lines and if they emerge into each hole without crossing,
or any slight overlaps, however:

On the bottom edge, there are two areas in the middle that look as if
they should be indentations into the overall area but also have a
bottom edge that follows the bounding box

Probably not a problem - on the left edge there are two holes where the
top one is closer to the edge than the hole it is joined from

Are diagonal cuts OK - on some devices you can see where this is
happening (for some reason the original OSM data did this)

Let me know if you want me to look in more detail.


On Wed, 2017-02-01 at 15:24 +0000, Gerd Petermann wrote:
> Hi Ticker,
> I tried to reach you with a PM but that was returned, so I try again
> via list...
> Gerd
> ________________________________________
> Von: Gerd Petermann
> Gesendet: Mittwoch, 1. Februar 2017 16:09
> An: Ticker Berkin
> Betreff: Please help
> Hi Ticker,
> I try to understand why ShapeSplitter complains about a polygon
> created by my new algo.
> Attached is a patch and an input file.
> Command:
> java -Dlog.config=mkgmap_log.props -ea -jar dist\mkgmap.jar
> f:\osm\test.osm.pbf
> My mkgmap_log.props contains
> .level=WARNING
> and I see this warning:
> WARN: uk.me.parabola.util.ShapeSplitter  f:\osm\test.osm.pbf:
> Direction of shape and hole conflict; probably self-intersecting
> polygon this: fp=146086642 lp=146173971 area=19324813903 #=134 
> http://www.openstreetmap.org/?mlat=48.975820&mlon=13.355620&zoom=17 
> http://www.openstreetmap.org/?mlat=48.988628&mlon=13.389160&zoom=17 o
> ther: fp=146153055 lp=146161739 area=22313626 #=6 
> http://www.openstreetmap.org/?mlat=49.002597&mlon=13.353453&zoom=17 
> http://www.openstreetmap.org/?mlat=49.003250&mlon=13.352696&zoom=17
> I don't see what's wrong here.
> Gerd
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