On Wed, Mar 31, 2010 at 12:30 AM, Marko Mäkelä <marko.makela@iki.fi> wrote:
On Tue, Mar 30, 2010 at 11:08:40PM -0800, NopMap wrote:
- What level of confidence do you achieve with generate sea? Many posts still mention minor failures, disappearing islands etc.
As far as I am concerned, it just works. Any errors will be logged and will come through my error message filter. You can fetch my scripts and files at http://www.polkupyoraily.net/osm/ and adapt to your area.
can confirm that. now also --generate-sea=multipolygon works and didn't have any failures on whole california which has some real complex coastlines. don't remember the exact mkgmap version. any newer one will do. I like it more this way because I don't need to have a typ file
Also, when debugging coastline errors (gap in coastline, coastline not extending to map border), you may want to use a command like this:
osmosis --rx finland.osm.bz2 --tf accept-ways natural=coastline --used-node \ --wx finland-coastline.osm
xapi is your friend and can achieve the same without downloading the planet or excerpts wget http://www.informationfreeway.org/api/0.6/way\[natural=coastline\]\[bbox=-124.5,32,-114,42\]-O coastline.osm
The resulting file should be so small that you can load it in JOSM to see the way and node ids of the broken coastlines.
- Is it possible to save the resulting sea/land polygons for later re-use? Apparently the OSM data changes more frequently than the actual coastline and re-generating it from scratch every time you update is not necessary.
Generating the coastline is not that slow any more. If you absolutely wanted, I guess you could generate a separate map layer with just the sea, and compile your regular map without --generate-sea.
Marko _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev