[Routing] Binary file format

[Adam Boardman]

> I thing that this is basically the same idea, but my approach is to have all
> data offline on a flash card with me. 

I plan to offer that as an option too, I've started by making an 
openlayers web interface* that just lets you pick two sizes of tile, 
both with full details... and will package them into a zip for easy 
device installation.

Before I release a WhereAmI that supports this properly I'm planning on 
changing the large tiles to only contain major features, and also 
thinking of world tiles that will just give vmap0 country outlines.

I'm wondering about removing the major features as given in the large 
tiles from the small tiles, or whether the file compression would 
effectively handle that anyway? (thinking of moving to 7zip as slightly 
better compression).

Cheers,

Adam.

* I'd suggest not clicking to many different tiles as each new tile does 
give both my server and the API extra work todo... also the entire tile 
does get passed to your pc that only stores the size... (zipping is done 
on the server). http://www.symbianos.org/post.php?nav=osmtileselector