[mkgmap-dev] Routing across multiple tiles

Tue Jul 28 22:39:00 BST 2009

Mark Burton wrote:
> Hi Mark,
> 
>> Sorry forgot to add that bit. I'm using splitter on the UK extracts from 
>> geofabrik.
> 
> OK.
>  
>> The most recent trials have used r1099, but before that I was using 
>> r1067 and r1072 all with the same results.
> 
> OK.
>  
>> As I say going from one tile to an adjacent one works; but anything with 
>> an intermediate tile fails. I've tried various routes so I believe the 
>> problem is general (for me at least!) rather than a specific road that 
>> is causing the problem.
> 
> Testing with mapsource on tiled maps of the UK and the Netherlands, I
> can route across multiple tiles (in one case, I counted 7 tiles).
> 
> However, mapsource often gives up when trying to route long distances
> (especially with the UK map compared to the NL) so I wonder if there's
> some complexity contstraint that we're not adhering to.
> 
> But to answer your original question, multiple tiles can be routed
> across.
> 
> Cheers,
> 
> Mark

Thanks for the feedback. I've just done a new map rerunning splitter and 
mkgmap r1099 again but I get the same problem. At least you've confirmed 
it should work so I'll try and do some more thorough testing to see if I 
can pin down what I'm going wrong.