[mkgmap-dev] Maps crashing Mapsource in big cities

Fri Feb 12 15:13:41 GMT 2010

MB> Not sure what Chris is referring to there.

A couple of things:

1) The current approach where the splitter holds on to any nodes within a 
certain overlap outside each tile is slightly flawed. For example if a way 
crosses a tile edge, then if the nearest node in that way which falls outside 
the tile also falls outside the overlap area, the line segment crossing the 
tile edge will be lost and hence mkgmap will not be able to join the tiles 
seamlessly. However I'm yet to see much evidence that this is a problem in 
practice.
2) Relations that cross tile boundaries aren't preserved in their entirety. 
This has been discussed on the list recently, and is known to cause problems.

Another limitation of the splitter is that it doesn't yet handle relations 
containing other relations. I'm not sure how much this matters as far as 
mkgmap is concerned.