On Mon, Oct 10, 2011 at 11:44:07AM +0100, Steve Hosgood wrote:
Last week I generated a routable map for South Wales which does everything you'd expect concerning routing just fine, but suffers the well-known "flooding" problem.
Coincidentally, someone reported a flooding problem in Finland as well. I had not paid attention to it, because mkgmap did not complain. It turned out that the reason was that almost a month ago, someone had added an island to a natural=water lake not by adding it as a role=inner member to the multipolygon relation, but by tagging it as natural=coastline. Because this was the only natural=coastline in the map tile, everything was flooded with sea water. I was wondering if generate-sea could complain when a natural=coastline (multi)polygon overlaps a natural=water (multi)polygon. I do understand that it might not be too useful to complain about other cases of overlapping areas, but I would guess that there is no valid case of having lakes in sea areas. Best regards, Marko PS: Did you try to enable logging and grepping the log for coastline messages? You can get my logging.properties at http://www.polkupyoraily.net/osm/. Invoke mkgmap like this: java -Dlog.config=logging.properties ... -jar mkgmap.jar ... grep -i coast mkgmap.log.0