On Mon, Apr 12, 2010 at 12:51 PM, Apollinaris Schoell <aschoell@gmail.com> wrote:
relation looks good. You should try to create just a single tile first to see if it's mkgmap or splitter. splitter clips ways from relations outside of the tile and this is a known problem. recent versions of mkgmap can repair in most cases by closing the multipolygon at the tile boundary. But it doesn't work in very complex situations. I see similar problems on large lakes, national park, …
I just tried it with a single .osm file that was not processed with splitter and the relation is not rendered. I used the XAPI to download the extract rather than using the planet file this time around. I verified that the relation is completely included in the extract.
I've put the source files and the results at<http://161.210.45.126/> if someone wants to take a look.
I have one note: The wiki tells us something about tagging of multipolygons: "It is suggested to apply all tags which describe the area to the relation, and not to the ways. In many cases this may result in completely untagged ways." This means: if only one of the ways used for the relation is not completely tagged it may break the complete multipolygon. The mp 406715 does not follow this rule. I don't know if that's a problem or not but you may consider to tag the multipolygon instead of all ways. WanMil