[OSM-dev] Osmosis: Subtiling the planet with nice ways proposal

[Lambertus]

Hi Brett,

Lets see if I can put this down nice and short: I've had a little chat 
on the IRC today about splitting the planet file into subtiles for my 
Garmin endeavors. I complained about missing ways where they cross tile 
boundaries because of how the bboxes are extracted from the planet file 
and that this is quite a showstopper for the Garmin maps.

Now, this could be solved using the completeWays option but that is not 
useable when processing the whole planet file. Also the ways do not stop 
at the edges of the tiles. So RichardF (et al) came up with an idea 
where large tiles were extracted which would be post-processed to 
produce subtiles with ways neatly cut on the edges. This would lower the 
amount of RAM needed to maintain a list of nodes and ways that are 
involved significantly, resulting in a workable solution. We discussed 
some more about this and came to the conclusion (Bobkare/Kleptog) that 
it might be a nice addition to Osmosis to add this as a new feature. How 
about that, eh?

Attached is the (long but condensed) IRC log which shows the idea (and 
some spin-offs) as described above in some more detail (although in bits 
and pieces).

What d'you reckon? Is this something for Osmosis?

Regards, Lambertus
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