[mkgmap-dev] Fwd: Wrong routing in some closed roundabount

Fri Jul 8 07:41:54 BST 2016

Hi Alexandre,

good to hear :-)

Gerd

Alexandre Loss wrote
> Hi Gerd,
> 
> Analyzing and comparing the syntax of your test osm file with my test one,
> I found an error in my syntax. The roundabout where I get the unexpected
> behavior, the first and the last nodes aren't the same.
> I mean, the wrong syntax was the one below:
> 
>  
> <node id="3" lat="-20.4545397" lon="-40.4486877" visible="true"
> version="1"/>
>  
> <node id="15" lat="-20.4566083" lon="-40.4487237" visible="true"
> version="1"/>
>  
> <node id="20" lat="-20.4540903" lon="-40.4498724" visible="true"
> version="1"/>
>  
> <node id="18" lat="-20.4544979" lon="-40.4510719" visible="true"
> version="1"/>
>  
> <node id="21" lat="-20.4555235" lon="-40.4515836" visible="true"
> version="1"/>
>  
> <node id="19" lat="-20.4565664" lon="-40.4511078" visible="true"
> version="1"/>
>  
> <node id="22" lat="-20.4570158" lon="-40.4499232" visible="true"
> version="1"/>
>  
> <node id="23" lat="-20.4555826" lon="-40.4482119" visible="true"
> version="1"/>
>  
> <node id="24" lat="-20.4540903" lon="-40.4498724" visible="true"
> version="1"/>
>  
> <way id="17" visible="true" version="1">
>   
> <nd ref="20"/>
>   
> <nd ref="18"/>
>   
> <nd ref="21"/>
>   
> <nd ref="19"/>
>   
> <nd ref="22"/>
>   
> <nd ref="15"/>
>   
> <nd ref="23"/>
>   
> <nd ref="3"/>
>   
> <nd ref="24"/>
>   
> <tag k='highway' v='unclassified' />
>   
> <tag k='junction' v='roundabout' />
>   
> <tag k="oneway" v="yes"/>
>   
> <tag k="name" v="ROTATÓRIA"/>
>  
> </way>
> ...when should be:
> 
>  
> <node id="3" lat="-20.4545397" lon="-40.4486877" visible="true"
> version="1"/>
>  
> <node id="15" lat="-20.4566083" lon="-40.4487237" visible="true"
> version="1"/>
>  
> <node id="20" lat="-20.4540903" lon="-40.4498724" visible="true"
> version="1"/>
>  
> <node id="18" lat="-20.4544979" lon="-40.4510719" visible="true"
> version="1"/>
>  
> <node id="21" lat="-20.4555235" lon="-40.4515836" visible="true"
> version="1"/>
>  
> <node id="19" lat="-20.4565664" lon="-40.4511078" visible="true"
> version="1"/>
>  
> <node id="22" lat="-20.4570158" lon="-40.4499232" visible="true"
> version="1"/>
>  
> <node id="23" lat="-20.4555826" lon="-40.4482119" visible="true"
> version="1"/>
>  
> <way id="17" visible="true" version="1">
>   
> <nd ref="20"/>
>   
> <nd ref="18"/>
>   
> <nd ref="21"/>
>   
> <nd ref="19"/>
>   
> <nd ref="22"/>
>   
> <nd ref="15"/>
>   
> <nd ref="23"/>
>   
> <nd ref="3"/>
>   
> <nd ref="20"/>
>   
> <tag k='highway' v='unclassified' />
>   
> <tag k='junction' v='roundabout' />
>   
> <tag k="oneway" v="yes"/>
>   
> <tag k="name" v="ROTATÓRIA"/>
>  
> </way>
> Thank you very much by your time. Your analysis showed me the way so I
> could diagnose my problem.
> 
> Regards,
> 
> Alexandre
> 
> 2016-07-07 4:09 GMT-03:00 Gerd Petermann <

> GPetermann_muenchen@

> >:
> 
>> Hi Alexandandre,
>>
>>
>> I tried to reproduce the problem using the attached input file. Routing
>> works for both cases.
>>
>> So there is probably more to it. If you can reproduce the problem, please
>> let me know how.
>>
>>
>> Gerd
>> ------------------------------
>> *Von:* Gerd Petermann
>> *Gesendet:* Mittwoch, 6. Juli 2016 18:12:22
>> *An:* Development list for mkgmap
>> *Betreff:* AW: [mkgmap-dev] Fwd: Wrong routing in some closed roundabount
>>
>>
>> Hi Alexandre,
>>
>>
>> seems that you have test data. Please post a link to it.
>>
>>
>> Gerd
>> ------------------------------
>> *Von:* mkgmap-dev <

> mkgmap-dev-bounces at .org

> > im Auftrag von
>> Alexandre Loss <

> alexandre.loss@

> >
>> *Gesendet:* Mittwoch, 6. Juli 2016 12:08:11
>> *An:* Development list for mkgmap
>> *Betreff:* [mkgmap-dev] Fwd: Wrong routing in some closed roundabount
>>
>> Hi Gerd,
>>
>> Now you are back, please take a look at this problem when you have time.
>> Thanks.
>>
>> Alexandre Loss
>>
>> ---------- Forwarded message ----------
>> From: Alexandre Loss <

> alexandre.loss@

> >
>> Date: 2016-06-06 13:35 GMT-03:00
>> Subject: Wrong routing in some closed roundabount
>> To: Development list for mkgmap <

> mkgmap-dev at .org

> >
>>
>>
>> Hi guys,
>>
>> We note in our group a strange behavior in some roundabounts that are
>> complete loops. Investigating, we discovered that when the starting and
>> ending points of a roundabout coincides with a routable node, we are able
>> to route through this roundabout. However, if the starting and ending
>> points of a roundabout don't match a rountable node, we have problem to
>> route through this roundabout.
>>
>> The example bellow shows this clearly when trying to create a route em
>> Mapsource from point A to B:
>>
>> [image: Imagem inline 2]
>>
>> Thank you for your time.
>>
>> Alexandre Loss
>>
>>
>> _______________________________________________
>> mkgmap-dev mailing list
>> 

> mkgmap-dev at .org

>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>>
> 
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