[mkgmap-dev] Stronger Intertile Routing Problems with Basecamp4.2.1?

Thu Jul 4 05:23:40 BST 2013

I sent the attached mail a couple of weeks ago.

Reducing --max-nodes seems to make a difference; I tested another route this 
morning in Basecamp after creating it in Mapsource and it worked fine (both 
latest versions); and I have tested on my Dakota 20. My guess is Garmin 
software uses fixed length buffers, so if there is too much information in 
the tiles it sorts it on size order and disposes of the smaller bits of 
information. I'm not saying it's perfect; but it helped me.

If someone who is experiencing routing across tile boundary problems tries 
with a --max-nodes=750000 and confirms this fixes the problem then we could 
have a work around.

Regards, Geoff.

-----Original Message----- 
From: Johannes Formann
Sent: Wednesday, July 03, 2013 11:12 PM
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] Stronger Intertile Routing Problems with 
Basecamp4.2.1?

Felix Hartmann <extremecarver at gmail.com> wrote:
> Well, I like some other people have noted that Basecamp 4.2.1 doesn't
> autoroute very well. I tried through many examples, and what I found out
> was that intertile routing seems to be the major problem. As soon as the
> route leaves one tile more than two times - to go back into it, seems to
> crash the routing - if it is the preferred way. Anyone else finds  another 
> solution?

I found also some strange behaviour with Basecamp 4.2.1 on OS X.
http://picpaste.de/Bildschirmfoto_2013-07-04_um_00.00.37-hag375X7.png

Dont know if the problem is a tile border, but the routing has some serious
bugs.

Regards

Johannes

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