[Imports-us] Portland Metro Area Building Import

[Frederik Ramm]

Hi,

On 11/20/2014 09:40 AM, Rafa Gutierrez wrote:
> Frederik - Good point. As I understand it, the source stewards maintain
> their building data daily. Public releases are published quarterly
> (which is why I stated OSM fixes may happen before we receive new
> updates). I mentioned your exact scenario to the stewards yesterday and
> awaiting a response on their specifics of tracking building removal.
> This would be useful to flag buildings that need removal if the OSM
> community hasn't already fixed this.
> 
> Am I understanding your concern correctly?

Frankly - not sure ;) I was less concerned about what the people at the
source do or don't do, my concern was mainly that if a building is
removed in OSM (for good reason - say a meteorite crashed on it) but the
source people don't make the change in their data for some reason, that
this building might then be re-added to OSM.

To avoid that, you would either

* make sure that the building is removed in the source as soon as it is
removed in OSM

* make sure you only add buildings to OSM that have been *added* to the
source since the last publication (not buildings that simply are still
in the source)

* or actually have a look at object history in OSM to determine that
something was deleted and should therefore not be created again

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"