[talk-au] re Coastline rendering in Garmins Mapsource

[John Kitchener]

Matt wrote:

Coastlines (and the "inverse islands" issues) have been ongoing for ages for
the Mkgmap produced Garmin files. There's a --generate-sea switch for Mkgmap
that sometimes works fine, other times, not so good. It's hit and miss
enough that I've never enabled it for the maps I generate.

Problem seems to come from a few different things - non-closed coastline
polygons, coastline direction changes, points where rivers join
sea/coastline etc.

There's a lot of chat on the mkg-map dev list over the last 6 months or so
regarding this.

Matt
-------
Thanks Matt. Without 'sea polygons' it'll remain a complete mess for Garmin
displays. We need OSM to work in the 'real world' to accelerate uptake.

Hopefully the --generate-sea- switch comes good in Mkgmap. Until then .....

John k

PS The OsmAustralia downloads appear stuck at the 26/1 at 22b. Happy
Australia Day. :)