[GraphHopper] access=no

[Laurent Bendel]

Ok, got it. Makes sense.


On 22 janv. 2015, at 21:03, Nop <ekkehart at gmx.de> wrote:

> 
> Hi!
> 
> Access values are a secondary tag. In OSM an access value is not used on its own on a node. The node represents some sort of barrier and the access tags show which modes of travel cann pass this barrier and which cannot.
> 
> The type of barrier also needs to be evaluated before the access tags - it may already allow certain vehicles and rule out others. E.g. a bollard is always passable on foot and by bicycle.
> 
> I would consider a lone access tag on a node meaningless.
> 
> 
> bye
>                    Nop
> 
> 
> Am 22.01.2015 18:59, schrieb Laurent Bendel:
>> Hi Peter,
>> right, I was looking at the wrong place. Naively, I would think that ANY
>> node of any way that has access=no would disqualify the way, would it
>> take too much processing to take in account all nodes and not just a few
>> select ones ?
>> 
>> Laurent
>> 
>> PS: I’ll go ahead and just add a barrier=gate on those places anyway, it
>> won’t hurt
>> 
>> On 22 janv. 2015, at 14:58, Peter <graphhopper at gmx.de
>> <mailto:graphhopper at gmx.de>> wrote:
>> 
>>> Hi Laurent,
>>> 
>>> barriers are handled but the border_control is not yet included in the
>>> potentialBarriers list. Please create an issue to fix this. Best would
>>> be to let me know some more candidates ;)
>>> 
>>> Here is the code for cars:
>>> https://github.com/graphhopper/graphhopper/blob/master/core/src/main/java/com/graphhopper/routing/util/CarFlagEncoder.java#L76
>>> 
>>> Regards,
>>> Peter
>>> 
>>> On 22.01.2015 11:58, Laurent Bendel wrote:
>>>> Ok. The reason I’m asking, is that I modified a node on
>>>> Openstreetmap, flagging it with: access=no, but the routing algorithm
>>>> still shows a route going « through » this node. After a quick look
>>>> at the code (what I could figure out), I thought that the algorithm
>>>> would take in account those cases, but obviously not. What should be
>>>> the tagging to force the routing to avoid a road that is closed at
>>>> some point ?
>>>> 
>>>> Thanks,
>>>> Laurent
>>>> 
>>>> PS: the node in question is here:
>>>> https://www.openstreetmap.org/node/3272543050
>>>> 
>>>> On 21 janv. 2015, at 15:48, Peter <graphhopper at gmx.de
>>>> <mailto:graphhopper at gmx.de>> wrote:
>>>> 
>>>>> Hi Laurent,
>>>>> 
>>>>> we update the OSM data roughly every day.
>>>>> 
>>>>> Regards,
>>>>> Peter
>>>>> 
>>>>> On 21.01.2015 15:44, Laurent Bendel wrote:
>>>>>> Hi,
>>>>>> how often does the server at https://graphhopper.com/maps/ takes
>>>>>> OSM updates from the central repository and recreates its graph ?
>>>>>> because I’ve made some changes in OSM that I don’t see reflected in
>>>>>> the results, so I’m wondering if it’s a problem of algorithm or
>>>>>> just because it’s not updated yet.
>>>>>> 
>>>>>> Laurent
>>>>>> 
>>>>>> 
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>>>>>> https://lists.openstreetmap.org/listinfo/graphhopper
>>>>> 
>>>>> 
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>>>> 
>>>> 
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>> 
>> 
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