[mkgmap-dev] Routing issues

Fri Feb 8 19:25:00 GMT 2013

Thanks guys. Getting it from overpass now as a whole. Still, as long as
the base map is there, it will sometimes use the streets from the base
map. But it's okay for me to delete the base map. Sad that there isn't a
nicer solution.

Another problem that I have is that the routing is not giving enough
"attention" to the highway, i.e. it uses streets that go parallel to the
highway sometimes. Sometimes the route even goes on and off the highway.
Could that be because I'm using the --ignore-maxspeeds flag? I've got
that one from the guy at garmin.openstreetmap.nl who uses it for some
reason.

On 09/02/13 06:11, Apollinaris Schöll wrote:
> In general it is not possible to download data this way and combine
> it. There is a high chance that the boundary nodes are missing and
> that is where routing brakes. To some extend Garmin devices will fix
> missing connections and fall back to the basemap routing to find a
> rout between tiles.
> It is highly recommended to download an extract for the whole area or
> cut it out from a planet or a big enough extract. Then use splitter to
> split it into 2 part.
> If the island is really small you could download the whole from XAPI
> or Overpass
>
>
>
>
>
> On Fri, Feb 8, 2013 at 10:37 AM, <mkgmap-dev at salo.mailrange.com
> <mailto:mkgmap-dev at salo.mailrange.com>> wrote:
>
>     I think it makes a lot of sense. Maybe I should clarify it further:
>     - If I calculate a route that is completely within the top part of
>     the island, everything's fine.
>     - If I calculate a route that is completely within the bottom part
>     of the island, everything's fine.
>     - If I calculate a route that goes across the two parts of the
>     island, the base map streets seem to be the only ones that provide
>     a way across the "border". With gmapbmap.img that results in our
>     crappy route, without gmapbmap.img that results in no route at all.
>
>
>
>     On 09/02/13 05:30, Jaakko Helleranta.com wrote:
>>     Hmm . That sounds interesting/odd (to me, a non developer). Are
>>     you implying that you loose routing capability to _OSM_ data's POIs?
>>
>>     I wonder what information there is in that gmapbmap.img if that's
>>     the case... But more so: I've always understood that the unit
>>     routes purely with the OSM-derived .img. .. But as noted, I'm no
>>     dev person and my technical understanding of this is limited.
>>
>>     -Jaakko
>>     --
>>     jaakko at helleranta.com <mailto:jaakko at helleranta.com> * Skype:
>>     jhelleranta * Mobile: +509-37-269154 <tel:%2B509-37-269154>  *
>>      http://go.hel.cc/about.me
>>
>>
>>     On Fri, Feb 8, 2013 at 12:44 PM, <mkgmap-dev at salo.mailrange.com
>>     <mailto:mkgmap-dev at salo.mailrange.com>> wrote:
>>
>>         Thanks Jaakko, I'm pretty sure that the problem is indeed
>>         related to gmapbmap.img (the "wrong" street has the same
>>         shape as one of the streets that show up when I disable my
>>         gmapsupp.img).
>>
>>         However, when I delete the gmapbmap.img, I loose routing
>>         capabilities to many of the POIs and addresses! Is there
>>         another way? Maybe edit the gmapbmap.img to delete the
>>         streets (it's only a few)?
>>
>>         There is another theory I have: As you can see in our wget
>>         commands, we are downloading the island in two parts. It
>>         seems that the routing has issues only when going between the
>>         two parts. Maybe the overlap isn't big enough? Does anybody
>>         know the minimum required overlap?
>>
>>
>>
>>
>>         On 09/02/13 04:08, Jaakko Helleranta.com wrote:
>>>         Checked the video: Looks _exactly_ like my basemap problem.
>>>         -Jaakko
>>>
>>>         On Fri, Feb 8, 2013 at 12:00 PM, Jaakko Helleranta.com
>>>         <jaakko at helleranta.com <mailto:jaakko at helleranta.com>> wrote:
>>>
>>>             I didn't look at the video but what you describe sounds
>>>             like a pesky problem I have experienced before. 
>>>             My solution was to delete the global basemap(?) from the
>>>             device memory. It's an .img file of about 50MB. Solved
>>>             the problem.
>>>             Cheers,
>>>             -Jaakko
>>>             --
>>>             jaakko at helleranta.com <mailto:jaakko at helleranta.com> *
>>>             Skype: jhelleranta * Mobile: +509-37-269154
>>>             <tel:%2B509-37-269154>  *  http://go.hel.cc/about.me
>>>
>>>             On Fri, Feb 8, 2013 at 11:36 AM, Fabian S.
>>>             <mkgmap-dev at salo.mailrange.com
>>>             <mailto:mkgmap-dev at salo.mailrange.com>> wrote:
>>>
>>>
>>>                 we are having a problem with the maps: In some
>>>                 cases, the routing uses streets that don't exist!
>>>
>>>
>>>
>>>
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>>
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