[mkgmap-dev] [PATCH v1] - extend --replace-short-arcs option to take min arc length

Sat Jun 6 13:37:47 BST 2009

Hi Mark,

I've experienced the same problem: a short arc disappered in Rome (I'm still looking for it...). And the routing gets broken. Did you understand why those short arcs (with no collapsing end nodes) get deleted?

Ciao, Marco.

--- Gio 4/6/09, Mark Burton <markb at ordern.com> ha scritto:

> Da: Mark Burton <markb at ordern.com>
> Oggetto: Re: [mkgmap-dev] [PATCH v1] - extend --replace-short-arcs option to take min arc length
> A: mkgmap-dev at lists.mkgmap.org.uk
> Data: Giovedì 4 giugno 2009, 19:57
> 
> Hi Felix,
> 
> > Shame on me, I had in my batch the call for the
> unpatched mkgmap 
> > version, which of course did not.
> 
> OK.
>  
> > What can I say about the patch? Get it into TRUNK!!!!
> 
> I will commit it soon as it won't affect the default
> operation.
>  
> > Finally Routing over longer distances IS possible.
> Route calculation 
> > time decreased in mapsource by up to 50%, and possible
> route length 
> > increased about 20-25%.
> > Also no single Mapsource Crash since!!!!!!!!!!!!!
> 
> Good.
>  
> > At least in Austria where because of the import, many
> roads are not 
> > connected, this patch is absolutely essential!
> 
> The patch only merges nodes that are close and already
> connected.
> It doesn't merge nodes that are close and not connected.
>  
> > On my Vista HCx also many destinations that previously
> took 2-3 minutes 
> > to calculate just calculated only 20-30 seconds!
> 
> Great.
> 
> > Maybe don't enable it by default, I have not really
> tested whether now 
> > there are any problems with roads connected that
> should not be 
> > connected, but so far it has been working great!
> 
> I will commit something that has the same effect as the
> patch you have
> tried.
> 
> Cheers,
> 
> Mark
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