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[mkgmap-dev] Sea generation

From Apollinaris Schoell aschoell at gmail.com on Thu Nov 4 22:50:21 GMT 2010

On Thu, Nov 4, 2010 at 3:04 PM, WanMil <wmgcnfg at web.de> wrote:

>
>
> Some loud thinking:
> Would it be helpful if we copy the Mapnik behaviour of well defined
> coastlines? One could define one separate file that contains all
> coastline data (from europe, from the world?). This file could be
> maintained and improved in a better way than it is done in the OSM data.
> natural=coastline would be ignored/removed from the OSM input.
>
> most problems come from bad input data. especially when extracts are
created with osmosis without the option complete_ways.  This approach will
definitely fix the problem of incomplete data. the message is simply Dont
use extracts from geofabrik or trim them down with osmosis using
complete_ways option to make sure the coastline touches the boundary. I
haven't seen a single flooded tile in north america. mkgmap works pretty
well on good data


> Question:
> Has anyone extracted coastline data for the whole world/europe/asia/...?
> How many data is this?
>
the worldfile is in shp format. size is ~ 350mb. More info in the wiki
http://wiki.openstreetmap.org/wiki/Mapnik#World_boundaries


>
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