Hi Steve, > I've no idea, I've been wondering too. It could be that the way Mark is > doing the sea/island polygons is the right way, except that if I'm not > mistaken his method only works with a TYP file, whereas it is clearly > possible to do this without since the MetroEurope maps don't have a typ > tile.
Yes, my alternative scheme for sea/land does require a TYP file so it can't be the method used in the Garmin maps. What would be very useful is if the IMG format supported a polygon type that cut a hole in the polygon below it. Are we sure that such a beast does not exist? How about trying to find an unlocked Garmin map that contains sea with islands and examine it carefully? Cheers, Mark _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev