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 <[email protected]
<mailto:[email protected]>> 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 <[email protected]
<mailto:[email protected]>> 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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