[Talk-GB] Survey date

Edward Catmur ecatmur at googlemail.com
Sun Mar 10 21:33:19 UTC 2019


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.

Adding survey date would be redundant unless it's more than a day, week,
etc (depending on area) before you got around to editing and uploading and
the area could have changed in the meantime.

Cheers Ed

On Sun, 10 Mar 2019, 21:25 Martin Wynne, <martin at templot.com> wrote:

> I'm minded to start adding
>
>   survey:date=
>
> to some of my mapping (if you can call climbing over a stile surveying
> it). I've noticed on repeat visits that things do change quite a lot,
> and I can't guarantee to go back and keep everything I map up to date.
>
> But I'm puzzled by the wiki, which says:
>
> "This key should only be used when providing the survey date would be of
> some value to the OSM community, for example if the survey date occurred
> a reasonable amount of time in the past."
>
> Surely end users of the map are just as likely to want to check the date
> of something shown on the map as the "OSM community", which I assume
> means mappers?
>
> And what is a "reasonable amount of time in the past", and starting from
> when? It doesn't make sense. If I survey and map something now, and it
> is still on the map in 10 years time, I need to have put the date on it
> now.
>
> cheers,
>
> Martin.
>
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