Firstly, Mark, many thanks for working on the sea polygon issue. I've found two problems with --generate-sea. One is relatively minor, the other a bit more of a problem. 1 (minor). If you use an options file via the mgkmap -c switch, the comma separated list of generate-sea sub-options cannot have any spaces, or you get an error generate-sea:polygons,no-sea-sectors works fine, but generate-sea:polygons, no-sea-sectors results in the error: Unknown sea generation option ' no-sea-sectors' Known sea generation options are: multipolygon use a multipolygon (default) polygons | no-mp use polygons rather than a multipolygon no-sea-sectors disable use of "sea sectors" land-tag=TAG=VAL tag to use for land polygons (default natural=land) 2 (major). If an island border has the tags natural=coastline boundary=administrative Then, using Mark Burton's style (or even the default style) these islands get flooded. Attached is a screenshot taken from the Geofabrik Italy extract showing the whole of Sicily flooded. Other islands that don't have a coastline containing a boundary=administrative tag are fine. The only way to stop the flooding is to remove the boundary=administrative rule completely. This is strange because as the natural=coastline rule occurs first (in both the default and in Mark's style) then the coastline should be set before any administrative boundary rule matches. -- Charlie
