What was the input? a geofabrik download or a osmosis extract with complete coastline ways?
then you should try --generate-sea=extend-sea-sectors as Chris recommends.
I create all osm files with osmosis and  coastline will be complete and touch tile boundaries.

another idea is to take the area.list from processing a germany extract and feed it together with a planet or europe extract into splitter to get complete coastlines.




On Thu, Apr 1, 2010 at 1:24 PM, NopMap <ekkehart@gmx.de> wrote:


Hi!

Just to let you know. Encouraged by your statements, I tried to do the
German coast along the baltic sea with --generate-sea=multipolygon. The map
was made up of 3 tiles.

The result was rather disillusioning. In about 1/4 of the coast it looked
good, on half of the coast the water was missing completely and about 1/4
was inverted with the land flooded and the sea clear.

My conclusion is that I'll stick to the old technique for the time being
(manually edited sea polygons derived from the shapefiles used by mapnik).

bye
         Nop

--
View this message in context: http://n2.nabble.com/State-of-the-coastline-art-tp4829364p4839472.html
Sent from the Mkgmap Development mailing list archive at Nabble.com.
_______________________________________________