[OSM-dev] How to get the order of bus stops in a bus route?

[Jonathan-David SCHRODER]

Hi,

I don't know more about the tagging names.
You should find ii) in big cities.

Use http://wiki.openstreetmap.org/wiki/Bus
and http://osmdoc.com/en/tags/

Jonathan

On Wed, Feb 10, 2010 at 2:04 PM, Shuyan Chen <chenshuyan0221 at hotmail.com>wrote:

>  Hi, Jonathan
>
> Thanks for your comments.
>
> >i) 1 bus stop = 1 node
> >ii) 1 bus route from origin to destination = 1 relation containing : the
> origin->destination route way + the bus stops nodes for this route ; those
> stops may be a nodes of route way or nodes not contained in >the route way
> but close by enough.
>
> >Are there already any similar or different implementations of i) / ii) on
> osm.org data ?
> I just want to find a way to get ii) for a bus route in relations to
> implement path find algorithm.[image: Smile emoticon]
>
> Regards,
>
> Shuyan
>
>  *From:* Jonathan-David SCHRODER <jonathan.schroder at gmail.com>
> *Sent:* Wednesday, February 10, 2010 1:52 PM
> *To:* Shuyan Chen <chenshuyan0221 at hotmail.com>
> *Cc:* dev at openstreetmap.org
> *Subject:* Re: [OSM-dev] How to get the order of bus stops in a bus route?
>
> Hi,
> I am designing aloud, what do you think of this :
> i) 1 bus stop = 1 node
> ii) 1 bus route from origin to destination = 1 relation containing : the
> origin->destination route way + the bus stops nodes for this route ; those
> stops may be a nodes of route way or nodes not contained in the route way
> but close by enough.
>
> Are there already any similar or different implementations of i) / ii) on
> osm.org data ?
>
> For ii) to work in path find algorithms, the latter should assume that an
> ii) node separate from the route that's being considered, can be replaced by
> the ii) node closest to the former separate ii) node.
>
> For example, if we just want to display a polyline / sub-way of BR route
> from A to B...
> ...here's one idea for a very simple use case where a user wants to go from
> bus stop A to bus stop B, A & B on a same bus route BR.
>
> 1) starting node is A, destination node is B, directions steps is empty
>    append A to directions nodes
>    append B to directions nodes
> 2) directions finding, every following appending equals appending [A,
> [here,...] ,B], without touching A and B :
>    if A is not part of BR's way, then make the directions finding algorithm
> origin point be the closest node to A on BR way that is also closest in
> route distance to B; end if
>    same for B, make algorithm's destination point be the closest node to B
> on BR way that is also closest in route distance to A
> 3)   run directions algorithm's and append nodes if any.. calculate
> estimate travel duration
> 4) display polyline / way made up of [A,...intermediate nodes..,B]
>
> Jonathan
>
> 2010/2/10 Shuyan Chen <chenshuyan0221 at hotmail.com>
>
>>  Dear all,
>>
>> I would like to get  the bus stops in order in a route for bus transit
>> service ,including the bus route starting point and end point(bus station or
>> terminus).
>>
>> Can anybody provide any ideas on how to achieve it? Thanks in advance.
>>
>> Regards,
>>
>> Shuyan
>>
>>
>>
>> _______________________________________________
>> dev mailing list
>> dev at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/dev
>>
>>
>
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