[Talk-transit] NaPTAN Merging Guidelines

[Peter Miller]

On 18 Aug 2009, at 01:07, Bryce McKinlay wrote:

> Thank you very much for your efforts on this, Thomas, and everyone
> else involved - I've been waiting for the London import for a while,
> and it's fantastic to see this data in OSM!

+1

>
> I have one "bug" to report: Is it possible that special characters are
> being dropped from the stop names during the import? For example:
>
> <node id="469789137" lat="51.5122005" lon="-0.1420652" version="1"
> changeset="2177128" user="NaPTAN" uid="104459" visible="true"
> timestamp="2009-08-17T13:40:06Z">
>    <tag k="name" v="Conduit Street  Saville Row"/>
>    <tag k="naptan:CommonName" v="Conduit Street  Saville Row"/>
> ...
>
> TfL refers to this as "Conduit Street / Saville Row", so it seems the
> "/" characters are going missing somewhere?

The data in NaPTAN does not include the '/' actually, probably because  
of the work being done to standardise stop naming across the UK in  
NaPTAN. In particular to discourage stop naming of the form 'street/ 
cross street' and the use of some characters including /. In this case  
the slash has gone but the cross street naming remains.

>
> Also, I'm curious whether, in addition to the bus stop data, NaPTAN
> contains precise locations for Underground station exits, and if so,
> whether there is any plan to import these? OSM often contains only one
> node for stations that have multiple exits, and in some cases the node
> is ambiguously placed such that it isn't clear which street (or which
> side of the street) an exit is on. This level of precision does become
> significant when producing walking maps/directions...

Yes there are entrances in NaPTAN. For example there are 8 entrances  
given for Oxford Street Underground station. There are also platforms  
information, but no indication about which platform they relate to.

Can I suggest we complete the import of bus stops import into OSM  
first and then go back for another trawl through the data and get more  
detail?



Peter

>
> Bryce
>
>
>
> On Mon, Aug 17, 2009 at 3:50 PM, Thomas Wood<grand.edgemaster at gmail.com 
> > wrote:
>> I've only just realised that my previous message regarding the  
>> imports
>> beginning only went to talk-gb and talk-gb-london.
>>
>> Greater London is now imported as changeset 2177128.
>> I was planning to import Hull and Suffolk also this week.
>>
>> Now that we're importing the data, we really need to get our
>> guidelines on how to merge and tidy the data sorted. I've pulled out
>> the relevant pieces from the Birmingham wikipage out to
>> http://wiki.openstreetmap.org/wiki/NaPTAN/Surveying_and_Merging_NaPTAN_and_OSM_data
>> It really needs to be tidied and beaten into a useful document before
>> we let more people loose with the data.
>>
>> --
>> Regards,
>> Thomas Wood
>> (Edgemaster)
>>
>> _______________________________________________
>> Talk-transit mailing list
>> Talk-transit at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/talk-transit
>>
>
> _______________________________________________
> Talk-transit mailing list
> Talk-transit at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk-transit