Sam Larsen <samlars...@...> writes: >In areas where there has been a huge amount of pedal power mapping by some >very enthusiastic mappers in the Fens north of Cambridge, the data in OSM here >is generally of a very high quality, for this reason i would dispute many of >the OS Locator missing name polygons. I would assume that a number of these >are down to the 'historical' nature of OS data & place names. There are a >number of local names for stretches of A & B roads, which i would think are >probably not signposted or have not even used in the locality for a long time >- these may be covered by historical name tag (which i think does exist in >places).
Yes, there are often roads like this in the countryside. I tend to add the name anyway if there is evidence for its existence in the past or present. After all nobody officially strips the name from roads. The name is still there, even if 99% of visitors are ignorant of it as they drive through at 60mph. >For that reason i would be hesitant to put too much faith in the level of >accuracy using this measure when completeness becomes something like 90-95%. It depends on the application. There are likely to be older documents - legal documents particularly, such as title deeds - which use the name, or it may still be valid as a postal address. For users such as local authorities having all this stuff is likely to be important. I'd also like to '+1' the suggestion of feeding corrections back to OS. I have sometimes added note tags to OSM saying that names were wrong, but that was based on the Street View tiles. The Locator dataset plus the not:name tag will be a good way to streamline the reconciliation process. (It would be nice if we could more generally contribute data to the Ordnance Survey, which is still the national mapping agency, but I don't hold out much hope for getting the legal issues untangled.) -- Ed Avis <e...@waniasset.com> _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
