[mkgmap-dev] splitter and long way-segments

Sat Feb 12 15:50:35 GMT 2011

On Wed, Feb 9, 2011 at 5:15 AM, Henning Scholland <osm at aighes.de> wrote:
> Am 07.02.2011 23:45, schrieb Minko:
>> Henning,
>> Did you try a higher overlap setting?
>> Maybe --overlap=6000 ?
>>
>> --overlap
>> Nodes/ways/rels that fall outside an area will still be included if they are within this many map units. Default is 2000
> Sorry for late answer, but I tried this already. In some cases it works.
> But ferries at north sea or baltic sea (eg. Rostock-Helsinki) or other
> "ocean"-ferries (Norway-GB) have waysegments with length of more than
> 100km. These lines gets broken an I think its impossible to increase
> tiles so much.

The best workaround is to break these ways up into segments that are smaller.

It is possible for the splitter to go back and when it finds that it
missed a node in a way, to go back and re-fetch it. However, this
requires an extra pass, more memory, and will generate files that
aren't ordered nodes-ways-relations (and may need to be re-sorted?).

Scott