[mkgmap-dev] Land polygon from sea generator

Wed Jun 8 09:39:40 BST 2011

> WanMil,
>
> It's strange. I don't get that error message
>
>> Area too small to split at
>> http://www.openstreetmap.org/?mlat=51.87630&mlon=1.24341&zoom=17 (reduce
>> the density of points, length of lines, etc.)
>
> when I run mkgmap-r1955 on the filtered tile that I uploaded (3MB). I do
> get exactly that error message, three times, when I run mkgmap-r1955 on
> the complete tile (16MB). That's why I did not suspect that the
> subdivision splitting problem might be the cause of the missing land
> polygon. (It is missing in both cases.)
>
> Because of this discrepancy, I looked further at tile 63240175, which I
> described before. I produced a filtered version of this tile containing
> just the coastline elements. I ran mkgmap on it and got the error
> message five times, the same as with the complete tile.

That's no surprise for me. *As far as I have understood* the problem is 
causes by single polygons with too many nodes (per area?). So no matter 
how much other data is contained in the tile the problem should occur 
always if the given single polygon is contained in the tile.

But this is a quite complex thing so I could be wrong.

WanMil