[mkgmap-dev] Holes in the Sea

Tue Feb 28 13:19:28 GMT 2012

Sorry Marko, I mixed up the tiles. 63240790 was a seahole west of Ireland
which may have no coastline.

Meanwhile  I re-splitted and re-compiled everything again with some
different options (so the tile names are different now). This time I have
exactly 3 seaholes. Again the one south of Monaco (63240484) has coastline
in it. The one in the Biscay also has.

http://files.mkgmap.org.uk/download/52/Mapsource.JPG
http://files.mkgmap.org.uk/download/53/63240484.osm.pbf
http://files.mkgmap.org.uk/download/54/63240484.xml
http://files.mkgmap.org.uk/download/55/63240320.osm.pbf

Strange is: The tiles with the holes have completely incorrect geonames.
Other geonames seem to be OK.

To make sure, coastline is OK, I extracted one from the planet and used this
as coastline-file this time.

The files linked above are from a split with max-nodes=1200000 and I used
default options for generate-sea. I also tested with max-nodes=1600000, then
the Monaco hole was away but the others were still there.

I had no errors from the splitter or mkgmap (except some corrupted seamarks
and a too long way (ferry route) in the Baltic).

Yes, I have the same problems loading the XML tiles in Josm but with
tweaking "version" and "changeset" to 1 it works.

http://wiki.openstreetmap.org/wiki/User:RheinSkipper

> -----Ursprüngliche Nachricht-----
> Von: mkgmap-dev-bounces at lists.mkgmap.org.uk [mailto:mkgmap-dev-
> bounces at lists.mkgmap.org.uk] Im Auftrag von Marko Mäkelä
> Gesendet: Montag, 27. Februar 2012 09:40
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Holes in the Sea
> 
> On Sun, Feb 26, 2012 at 07:17:39PM +0100, RheinSkipper wrote:
> >The empty tile south of Monaco is attached here. I converted it to XML
> >and there are 28 occurrences of natural=coastline in it.
> 
> How did you convert it to XML? In my conversion, there is no
> natural=coastline left. Can you upload the converted XML?
> 
> I used this command to convert:
> 
> osmosis --rb 63240790.osm.pbf --wx 63240790.osm
> 
> For the record, JOSM refused to load the file until I replaced
version="-1"
> with version="1" and changeset="-1" with changeset="1".
> 
> If the tile does not have any closed natural=coastline way, then mkgmap is
> "allowed" to make the tile land-only. Maybe splitter could be "wisened" to
> draw a natural=coastline rectangle around the otherwise coastline-free
tile?
> 
> 	Marko
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