[Talk-GB] Mechanically setting name tag of Naptan data

SomeoneElse lists at mail.atownsend.org.uk
Wed Nov 27 00:39:47 UTC 2013


Matthijs Melissen wrote:
> In Birmingham, all bus stops have been imported from Naptan, but
> during the import, the name tag has not been set. I am considering
> adding the name tag, by setting it to something like:
>
> camelcase(naptan:Street) + ' / ' + naptan:CommonName
>
> That way, the name tag in OSM will match the name on the bus stop.

I can't comment on bus stops in Birmingham, but elsewhere in some cases 
(Notts) "name" seems to have been set to naptan:CommonName - see for 
here:<http://www.openstreetmap.org/browse/node/502389340>

http://www.openstreetmap.org/browse/node/502389340


> I am currently discussing whether this change is desirable on the
> local mailing list [1]. Apart from whether this change is desirable,
> what would be the easiest way to achieve it?
>
> I suppose it's best to download the data with xapi, use a scripting
> language to create a change set based on this data, and then upload
> the change set?

This far removed from the original naptan import, you'd really need to 
vet each uploaded bus stop, in order to try and reconcile:

o duplications (stops that were mapped before the original import), such 
as http://www.openstreetmap.org/browse/node/502389340 .

o "invalid" changes where someone's used or misused a bus stop node for 
something else (for example, new mappers sometimes see a bus stop with a 
pub name and add "amenity=pub" to it), or where someone's deleted a bus 
stop by mistake.

o "valid" changes where someone's moved a naptan-imported stop to a more 
accurate location, or deleted a bus stop because buses no longer stop there.

o Updated information from Naptan to stops verified (or not verified) in 
OSM.

A "guided merging" approach has been tried in the past, with DfT cycling 
data:

https://wiki.openstreetmap.org/wiki/Potlatch_2_merging_tool

Maybe something like that could work?

Cheers,

Andy

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