Cheers Christoph, Andy
>-----Original Message----- >From: talk-gb-westmidlands-boun...@openstreetmap.org [mailto:talk-gb- >westmidlands-boun...@openstreetmap.org] On Behalf Of Christoph Böhme >Sent: 23 November 2009 1:19 PM >To: Public transport/transit/shared taxi related topics >Cc: talk-gb-westmidlands@openstreetmap.org >Subject: Re: [Talk-gb-westmidlands] [Talk-transit] Updating the NaPTAN >busstops in Birmingham > >The update has been completed now. It's changeset 3194365 on the NaPTAN >account. > >Cheers, >Christoph > >Christoph Böhme <christ...@b3e.net> schrieb: > >> Hi, >> >> I plan to do an update of the NaPTAN bus stops in Birmingham to bring >> them in line with the imports in the rest of the country. The update >> will make the following changes: >> >> 1. All naptan:unverified=yes tags are changed to naptan:verified=no. >> This will make maintenance of the colour schemes in Novam easier. >> 2. naptan:unverified=no tags are removed. I think this makes more >> sense than replacing them with naptan:verified=yes. >> 3. naptan:AdministrativeAreaRef tags will be removed as they have only >> been used in the Birmingham import and nowhere else. So the tag is >> quite useless (tagwatch lists 105 as the only value for the tag). >> 4. naptan:Bearing tags will be added to all NaPTAN stops that do not >> have them yet (i.e. the stops in Birmingham). >> 5. naptan:BusStopType=CUS will be added when available and not yet >> existing. >> >> I am currently making the finishing touches on the import script and >> will test it then. So, if there are no objections against the changes >> the update should ready to go ahead in a couple of days. >> >> Method used for the update: >> >> I extracted atco-code, bearing, and bus stop type with an xsl script >> from the NaPTAN xml file for the West Midlands and placed the data >> into a new table in the Novam database. >> >> Since Novam maintains an up-to-date extract of all bus stops in OSM >> the bus stops which need be updated can easily be selected and joined >> with the new data in the table created before. >> >> Finally, a python script goes through the selected bus stops, applies >> the modifications outlined above to each them, and uploads them >> through the python osm api to OSM. If the upload fails due to a >> version conflict the latest version of the bus stop is retrieved from >> OSM and the script changes this node and uploads it again. >> >> The scripts are currently tailored to add and remove some tags from >> the Birmingham bus stops. However, I think this update might be a >> helpful step towards more complex updates of the NaPTAN data in OSM. >> >> Cheers, >> Christoph >> >> _______________________________________________ >> Talk-transit mailing list >> talk-tran...@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-transit > >_______________________________________________ >Talk-gb-westmidlands mailing list >Talk-gb-westmidlands@openstreetmap.org >http://lists.openstreetmap.org/listinfo/talk-gb-westmidlands _______________________________________________ Talk-gb-westmidlands mailing list Talk-gb-westmidlands@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb-westmidlands
