[mkgmap-dev] Splitting an country borders?

Wed Sep 16 09:01:53 BST 2009

> I seem to remember someone mentioning that Garmin supports non-rectangular
> map tiles.  Would that help?  Or would it be too much effort with too little
> gain to implement that in mkgmap (and splitter)?

I have seen a Garmin map with boundary points that do not lie on a
rectangle so, it's plausible that the boundary between two tiles can be
any shape. The important thing is that the coordinates of the boundary
points have to be the same in both tiles so that the GPS can match them
up.

In principle, it should be quite possible to route across tiles that
have a wiggly boundary. This could be achieved quite straightforwardly
by the splitter tagging the boundary points so that mkgmap knows where
they are.

Mark