[mkgmap-dev] coastline

Sun Jan 27 20:56:44 GMT 2013

> What difference does it make to download the split polygons instead of
> complete polygons?

Processing complete polygons require *much* more memory and I guess it 
needs a lot of more time to process them.

The reason is that there is one *very* big polygons for europe, asia and 
afrika. And the PrecompSeaGenerator has to split that very complex 
polygon into several small pieces. So it is easier to process already 
split and therefore smaller and less complex polygons.

WanMil