Hi Marko, thanks for the feedback. Did you use r2888 or later together with the patch? I think the warning is produced long before it comes to the point where mkgmap decides if the polygon is big enough. I am not very familiar with the SeaGenerator algo, but I think this message is produced when incomplete data is processed and mkgmap once decided that way 242824968 encloses sea and later detects that it must be an island. A bigger problem would be the other case (island changed to sea) Gerd
Date: Wed, 18 Dec 2013 17:17:46 +0200 From: marko.makela@iki.fi To: mkgmap-dev@lists.mkgmap.org.uk Subject: [mkgmap-dev] Bogus anti-island warnings for tiny natural=coastline polygons
On Tue, Dec 17, 2013 at 12:18:23PM -0800, GerdP wrote:
@Marko: Please check if the "converting anti-island" messages are gone now.
There are 20 of them for Finland after applying my filter. There could also be valid warnings, because I have been ignoring these errors and not adding them to my filter either.
I checked one example:
2013/12/18 16:28:01 WARNING (SeaGenerator): 63240002.osm.pbf: Converting anti-island starting at http://www.openstreetmap.org/?mlat=60.20405&mlon=25.49942&zoom=17 into an island as it is surrounded by water
It looks like this is referring to the 1.5m wide islet or rock
http://www.openstreetmap.org/way/242824968
which is a closed polygon, with land on the left. I think that the proper action would be to shrink this to a single point and then discard it, because it would be a polygon with zero area.
Best regards,
Marko _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev