<div dir="ltr">Hi Marc,<br><div><br></div><div>I am convinced survey:date is not the solution for maintaining large swathes of OpenStreetMap data. Nor do I think putting a survey date at a per tag level is realistic or workable. </div><div><br></div><div>Best regards,</div><div><br></div><div>Stuart </div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 6 Apr 2020 at 12:24, Marc M. <<a href="mailto:marc_marc_irc@hotmail.com">marc_marc_irc@hotmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
Le 06.04.20 à 09:31, European Water Project a écrit :<br>
> I have been thinking about ways we can efficiently verify data<br>
<br>
here's my workflow :<br>
- once a year, I query all poi (bar, restaurant, shop) within my comfort<br>
zone, and check all tag again.<br>
if nothing change, I update the tag survey:date=YYYY-MM on it<br>
<br>
of course the main problem occurs when everything is not checked (does<br>
the wifi work?) or verifiable (does the fire hydrant work?).<br>
for this last point, during the proposal on fire hydrants, we had agreed<br>
to use operational_status:date, for this king of technical object, it's<br>
fine.<br>
for a test of the restaurant wifi, it's not ideal, maybe not even desirable<br>
for opening jours, I don't know what to use.<br>
seeing the restaurant (source=survey) doesn't say clearly what was seen,<br>
was it just the fact that the restaurant was open? also the name ?<br>
or all the tags like I do ?<br>
of course one solution is to put lots of tag1:date tag2:date<br>
I hate this because the next contributor will modify tag1 without<br>
necessarily modifying tag1:date (it's the same problem with the source<br>
tag on objects that informs the source used by the one who added the<br>
object and not the source of the current object, with sometimes big<br>
difference such as a change of poi type)<br>
<br>
Regards,<br>
Marc<br>
<br>
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</blockquote></div>