Tomas
I used your advice and built a map of SA with sea successfully.
When building SA from one tile, the sea is correct with only some
islands drowned,
(I download Africa from geofabrik and extract southern
cuts the coastline at the country border and not at the tile border.)
When I build SA from 4 tiles (
the sea and land is reversed in some tiles, and correct in some.
I guess some splits in the coastline made by splitter does not get
merged again / correct by mkgmap?
BennieD