[Talk-GB] Survey date

Warin 61sundowner at gmail.com
Sun Mar 10 22:20:11 UTC 2019

On 11/03/19 09:02, Martin Wynne wrote:
> On 10/03/2019 21:33, Edward Catmur wrote:
>> Changesets have a timestamp attached (the time when you hit upload in 
>> the
>> editor, I guess), so the community (other mappers and data consumers) 
>> can
>> usually assume that the survey date is more or less the same as the
>> changeset timestamp.
> Thanks. But a changeset could contain several dozen different items, 
> not all of which have been surveyed at the same time, or even surveyed 
> at all.
> For example I might add a footbridge over a stream. The footbridge 
> would have been freshly surveyed, but the course of the stream I would 
> most likely trace from OS OpenData StreetView in the iD editor.
> My thought was to add the physical date to each separate item, the 
> date I crossed or photographed the bridge or whatever, regardless of 
> when I added it to OSM. It might be only a day or two later, or it 
> might be a few months later.

Being lazy .. I tend to add date stuff (if I can be bothered) to the 
source tag. Particularly where the change set uses multiple sources. Two 
birds one stone.
If someone changes it - they should also change the source tag, and that 
change is rare.

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