[OSM-talk] Import of buildings in Chicago

[Alan Mintz]

At 2012-05-28 05:02, Mike N wrote:
>On 5/27/2012 2:53 PM, Alan wrote:
>>>As I discussed with you, I am no longer uploading data with the tag and will
>>> >  go back to remove the tag from the existing data.
>>I object.
>>
>>An ID tag is highly useful for future reconciliation and/or 
>>synchronization later.
>
>   I used to agree with you, but in terms of minimum labor, updates are 
> best performed by retaining the original upload data, then doing a 
> conflation between the original data and a later update.   That will 
> highlight only changes from the original source, and only those 
> differences will need to be manually merged into OSM.

Except you won't see possible errors introduced after the first import by 
OSM editors. I think it's useful to see the diff between the current state 
of both databases.

--
Alan Mintz <Alan_Mintz+OSM at Earthlink.net>