[OSM-dev] Help: Bus Stop Data Extraction for Bus RoutingService

Shuyan Chen chenshuyan0221 at hotmail.com
Tue Feb 9 11:13:13 GMT 2010


> It is more likely that those stops have not yet been integrated in the
> relation. But for persons unknown to the local situation, that is
> impossible to determine.

Thanks, so I can only extract bus stop in the membemer of the relation for a bus route,right?

My original idea of attaching bus_stops to the ways that the bus travel along according to geometry distance may do not make any sense:(

Regards,

Grace

--------------------------------------------------
From: "Maarten Deen" <mdeen at xs4all.nl>
Sent: Tuesday, February 09, 2010 11:44 AM
To: "Shuyan Chen" <chenshuyan0221 at hotmail.com>
Subject: Re: [OSM-dev] Help: Bus Stop Data Extraction for Bus RoutingService

> On Tue, 9 Feb 2010 11:36:24 +0100, "Shuyan Chen"
> <chenshuyan0221 at hotmail.com> wrote:
>> Many thanks for your reply.
>> 
>> As you mentioned,
>>> There might be bus routes which do not stop at a certain bus stop,
>>> although
>>> its route is going along that way (think of regional buses).
>> 
>> there are many bus routes which do not contain bus_stops in the member
> of
>> the relation,yet stops exist in the way which the buses travel along.
>> 
>> Does it mean those stops in the ways are not the bus stops for the
>> correspondent bus route, and bus route do not have any stops?
> 
> It is more likely that those stops have not yet been integrated in the
> relation. But for persons unknown to the local situation, that is
> impossible to determine.
> 
> Regards,
> Maarten
> 
>> --------------------------------------------------
>> From: "Stephan Plepelits" <skunk at xover.htu.tuwien.ac.at>
>> Sent: Tuesday, February 09, 2010 11:15 AM
>> To: "Shuyan Chen" <chenshuyan0221 at hotmail.com>
>> Cc: <dev at openstreetmap.org>
>> Subject: Re: [OSM-dev] Help: Bus Stop Data Extraction for Bus
>> RoutingService
>> 
>>> On Tue, Feb 09, 2010 at 11:04:31AM +0100, Shuyan Chen wrote:
>>>> When we came to extract bus data from the element of “Relation”, we
>>>> found the
>>>> stopping point data in a relation are always incomplete in bus route
>>>> data,
>>>> meanwhile, we also noticed there are bus stopping points in the ways
>>>> which are
>>>> contained in a bus route relation.
>>>>  
>>>> What is the difference between the stop nodes within a relation and
> the
>>>> nodes
>>>> tagged as “bus_stop” in highways which are also contained in a
>>>> relation?
>>> As I understand it, a node which is a bus stop should be tagged as
>>> highway=bus_stop with a name. If a route stop at that bus_stop, it
> should
>>> be member of that relation. The role should be either stop,
> forward_stop
>>> or
>>> backward_stop, to indicate whether that bus stops at that stop in both
>>> directions or either in forward or backward direction (measured along
> the
>>> way where the node is member of ... often the node is not on the way,
> but
>>> next to the way).
>>> 
>>> There might be bus routes which do not stop at a certain bus stop,
>>> although
>>> its route is going along that way (think of regional buses).
>>> 
>>> An interpretation of that data you can see in the OpenStreetBrowser[1].
>>> 
>>> [1] http://www.openstreetbrowser.org
>>> 
>>> greetings,
>>>        Stephan
>>> -- 
>>> Seid unbequem, seid Sand, nicht Öl im Getriebe der Welt! - Günther Eich
>>> ,---------------------------------------------------------------------.
>>> | Stephan Plepelits,                                                  |
>>> | Technische Universität Wien   -    Studien Informatik & Raumplanung |
>>> | Projects:                                                           |
>>> | > openstreetbrowser.org > couchsurfing.org > tubasis.at > bl.mud.at |
>>> | Contact:                                                            |
>>> | > Mail: skunk at xover.mud.at > Blog: plepe.at > Jabber: skunk at fsinf.at|
>>> | > Twitter: twitter.com/plepe > Wave: plepelits at googlewave.com       |
>>> `---------------------------------------------------------------------'
>>> 
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