reporting my results for the Philippines: Using a single unsplitted Philippines time java -Xmx1512m -jar /home/maning/osm/routable_garmin/mkgmap/trunk/dist/mkgmap.jar --code-page=1252 --ea --tdbfile --latin1 --country-abbr=PHI --country-name=PHILIPPINES --remove-short-arcs=5 --route --road-name-pois --add-pois-to-areas --family-id=639 --family-name="OSM_PHIL" --overview-mapname=40000001 --series-name="OSM_PHIL" --description="OSM_PHIL" --generate-sea --style-file="/home/maning/osm/routable_garmin/svn/styles/experimental_master_style" /home/maning/osm/20090912/philippines.osm real 88m49.267s user 88m22.067s sys 0m12.873s compile time is 88 m Most large islands are above water! Clap, clap, clap! http://www.flickr.com/photos/esambale/3931037708/ There are small island groups that are submerged. I've checked the dat and it seems OK. http://farm4.static.flickr.com/3457/3930253533_f80fb2c0c0_m.jpg Using a splitted Philippine. time java -Xmx1512m -jar /home/maning/osm/routable_garmin/mkgmap/trunk/dist/mkgmap.jar --code-page=1252 --ea --tdbfile --latin1 --country-abbr=PHI --country-name=PHILIPPINES --remove-short-arcs=5 --route --road-name-pois --add-pois-to-areas --family-id=639 --family-name="OSM_PHIL" --overview-mapname=40000001 --series-name="OSM_PHIL" --description="OSM_PHIL" --generate-sea --style-file="/home/maning/osm/routable_garmin/svn/styles/experimental_master_style" /home/maning/osm/20090912/split_file/*.osm.gz real 21m59.543s user 21m59.006s sys 0m2.524s compile time is shorter (21 m) A tile with incomplete lake is submerged. The remaining portion of the lake in the adjacent tile is OK. http://farm3.static.flickr.com/2421/3930260941_d8e30eb4cf_m.jpg Bigger islands are submerged as well as some smaller island groups http://farm3.static.flickr.com/2477/3930257831_e4323d6a27_m.jpg http://www.flickr.com/photos/esambale/3931043920/ note: the last image shows what seems to be an incomplete coastline but zooming in shows it is not. Overall, I think the --generate-sea works OK if the osm tile contains closed coastline. There are problems when there is a mixture of incomplete coastline and large lakes. On Fri, Sep 18, 2009 at 12:16 AM, Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
On Thu, Sep 17, 2009 at 9:27 AM, svn commit <svn@mkgmap.org.uk> wrote:
Version 1198 was commited by steve on 2009-09-17 10:27:24 +0100 (Thu, 17 Sep 2009)
Merge in the sea polygon patch from the multipolygon branch.
You need to give the --generate-sea option at the moment to switch it on.
(B.t.w. that option isn't documented in --help=options)
It works fine for the map I generate at http://osm.nix.is Although the coastlines I have to deal with are comparatively simple. I'm generating the map for a bunch of islands surrounded by sea on all sides.
The size of the map went from 2.5 MB to 3.0 MB. I don't get any warnings from mkgmap (other than zero-arch routing warnings from --route).
The only issue I see is that sometimes lines appear in the sea where it looks like two sea titles have been not quite stitched together (see attachment). This appears both in qlandkarte and on the garmin device but goes away when I zoom in, and then sometimes reappears again.
There's nothing in the data for that explains the problem (like ferry lines): http://osm.org/go/e1lYQC-
Thanks to everyone who worked on this feature. It makes the maps a *lot* more useful in places where the ocean is a major feature (which is where most of species happens to live).
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-- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------