[mkgmap-dev] [PATCH] fix for "pink line of death" bug in routing

Mon Feb 9 17:35:11 GMT 2009

r865 works for me. Just thought I'd let you know.

All of the pink lines of death around where I work have now disappeared.
As suggested below I have set $rnod to 30 in osm2mp.pl

Thanks for the patch

Paul

Mark Burton wrote:
> Hi Robert,
> 
>>> Although this patch helped for "small routes" (say < 20km), when I
>>> tried a much longer route (90km or so) it went wrong near the end.
>>>
>>> So back to the drawing board, but at least that's part of the problem
>>> sorted if not the whole problem.
>> But let's look for related problems. In particular, are the signs of  
>> offsets encoded correctly? Negative offsets might explain why  
>> occasionally, the route goes off in the opposite direction.
> 
> Actually, I think the fix really did solve the major problem.
> 
> Further investigation shows that the badness I am seeing with my
> "longer route" is related to the number of nodes in a particular way.
> 
> If I limit the number of nodes to no more than 16, the routing works
> without going wacky. If I have some larger number of nodes (actual
> limit TBD but more than 16), the gps gets it wrong - it actually looked
> like it routed to the far end of the way rather than the near end.
> 
> So, if you use the patch from yesterday and limit the number of nodes in
> a way, it's looking pretty good (for the moment!)
> 
> Cheers,
> 
> Mark
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