On Mon, Aug 29, 2011 at 08:07:04AM +0200, michael lohr wrote: >My feeling with the problem of flooded tiles always was that the >geofabrik extracts are to blame - they're too "tight" in some places, >so the coastline breaks in the extraction process already, not during >the splitting. That happens for instance in the northwest of germany >around emden and in the northwest of india in gujarat.
The Geofabrik cutting polycons are not set in stone. A long time ago, I took a couple of iterations with Frederik Ramm to get a good extract of Finland that would include all of the country border, plus some lake multipolygons in the neighbour countries. I did this in Osmosis and JOSM by extracting the country borders from the Geofabrik extract and by downloading some data in JOSM, and finally editing the cutting polygon in a separate JOSM layer. It still takes a little tweaking to get the coastlines right. I have manually chosen the tile borders so that the coastline will end outside the tile border. Only in the Swedish/Finnish border I am using extend-sea-sectors to make up some coastline in Sweden. I think that it could be useful to have the tile-splitter support a set of fixed tiles that it would split itself further as needed. Best regards, Marko _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev