[OSM-talk] Identical Duplicate buildings

[Ewen Hill]

John,
   I too have seen this in a number of HOTOSM projects. The buildings are
identical and could not have been performed manually and appear duplicated.
It also looks like this occurs potentially when a validator has rejected an
edit and a new editor makes a change and submits it back for validation. I
have removed up to 100 duplicated buildings in a cell that only JOSM
validator showed up as there are no discernable differences. The quality of
mapping and the mappers does not appear to be the underlying issue here.

Ewen

On Thu, 28 Jan 2021 at 05:59, john whelan <jwhelan0112 at gmail.com> wrote:

> I'm seeing a large number from mappers who are using iD.  Typically
> mappers with less than 200 edits.
>
> #hotosm-task-278 on the change set for one group that stood out.
>
> What puzzles me is it looks as if they are uploading the same information
> twice.   I note that sometimes two mapperid's are involved but it seems
> very unlikely that two mappers would incorrectly map the same building in
> an identical way. I don't think JOSM allows that but I don't know iD well
> enough.
>
> Is there some guidance we can give to avoid the problem.
>
> Thanks John
>
>
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-- 
Warm Regards

Ewen Hill
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