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[mkgmap-dev] [PATCH v2] sea polygons

From maning sambale emmanuel.sambale at gmail.com on Sun Aug 2 14:03:15 BST 2009

Here's my several attempts, same parameters with diiferent osm files:
time java -Xmx1512m -jar
--code-page=1252 --tdbfile --latin1 --country-abbr=PHI
--country-name=PHILIPPINES  --remove-short-arcs --route
--road-name-pois --add-pois-to-areas --location-autofill=2
--family-id=639 --family-name="OSM_PHIL" --overview-mapname=40000001
--series-name="OSM_PHIL" --description="OSM_PHIL" --generate-sea

1.  An osm file with incomplete coastline:

2.  OSM file for the whole philippines with splitter:
wrong sea polys along tile edges
good sea areas on complete coastlines

3. OSM file for the whole philippines no splitting:

On Sun, Aug 2, 2009 at 8:41 PM, Christian Gawron<christian.gawron at gmx.de> wrote:
> Dermot McNally schrieb:
>> 2009/8/2 Christian Gawron <christian.gawron at gmx.de>:
>>> This improved version should fix an OutOfMemoryError reported by maning
>>> sambale and Dermot McNally.
>>> It also contains an update of the multipolygon patch by Rudi (which seems to
>>> produce better results fo Corsica).
>> OK... Again, based on the Geofabrik Ireland extract, this now runs to
>> completion - though very slowly. And indeed, I now have sea polygons
>> in the sea. The drawback is that I also have them on land, so it seems
>> like the coastline detection must be breaking down somewhere (Ireland
>> has a _very_ complex coastline in places).
> I can reproduce this problem and will have a look at it. My first guess
> is that either the shoreline is not closed or that there is still a
> problem with the multipolygon code.
> Best wishes
> Christian
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