[mkgmap-dev] Routing problem after mkgmap r3757

Sun Apr 2 22:55:25 BST 2017

Hi Gerd,

Any news about this?

Thaks.

Alexandre

2017-03-25 8:14 GMT-03:00 Alexandre Loss <alexandre.loss at gmail.com>:

> Hi Gerd,
>
> Some users of the maps that I compile daily in Brazil have started to
> complain about routing problems on some routes. So we started investigating
> and found the problem.
> We did a regression test on each of the previous versions of mkgmap until
> we figured out which version the problem started to occur from.
> And we have accurately identified that the problem began in version 3757.
> I mean, any img generated with version 3756 or lower routes normally; And
> every img generated with 3757 or higher causes the routing problem.
>
> Another thing we noticed was that we could not simulate the problem in
> MapSource or Basecamp. Only when installed on a GPS does the problem occur.
> See pictures below:
>
> *mkgmap r3757: FAILS*
>
> [image: Imagem inline 1]
> [image: Imagem inline 2]
>
>
> *mkgmap r3756: OK*
>
> [image: Imagem inline 3]
> [image: Imagem inline 4]
>
>
>
> So, knowing that the problem started after version 3757, I checked in SVN
> what was the change from version 3756 to 3757 that probably caused the
> problem. And everything indicates that the problem is in the*
> LineSplitterFilter.doFilter* method that you changed in version 3757.
>
> I believe that if you return with the original method the problem will be
> solved. However, if you changed it is because you had some reason. So that
> is the analysis you need to do.
>
> If you need data for testing, I can give you a piece of the map, all the
> parameters I use in splitter and mkgmap, and our custom style.
>
> I hope I have been clear enough and helped to solve this problem. I tried
> to be as precise as possible and if you need more information, please, let
> me know.
>
> Thanks.
>
> Alexandre Loss
>
>
>
>
>
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