On Thu, 21 Mar 2019 13:23:48 -0600
Martijn van Exel <m...@rtijn.org> wrote:

> > On Mar 21, 2019, at 12:35 PM, Mark Wagner <mark+...@carnildo.com>
> > wrote:
> > 
> > On Wed, 20 Mar 2019 21:46:59 -0600
> > Martijn van Exel <m...@rtijn.org <mailto:m...@rtijn.org>> wrote:
> >   
> >>> On Mar 20, 2019, at 9:01 AM, Mateusz Konieczny
> >>> <matkoni...@tutanota.com> wrote:
> >>> 
> >>> I plan to run an automated edit that will revert part of the GNIS
> >>> import that added them and delete objects that never had any
> >>> reason to appear in the OSM database in any form, at least
> >>> according to GNIS data.
> >>> 
> >>> Please comment no matter what you think about this idea! I will
> >>> not make the edit without a clear support so please comment if
> >>> you think that it is a good idea and if you think that it should
> >>> not be done.     
> >> 
> >> 
> >> Thanks for bringing the idea up. It actually did come up fairly
> >> recently on Slack
> >> https://osmus.slack.com/archives/C029HV951/p1550176430103000 
> >> 
> >> My view is that we would be missing an opportunity to have mappers
> >> review these locations and update the areas concerned. These nodes
> >> exist mostly in ‘undermapped' / remote areas that could use some
> >> human mapper attention. So I’d be in favor of trying to resolve
> >> this using some human driven cleanup first.  
> > 
> > My experience is that this will mostly just make things worse.
> > 
> > There was a MapRoulette task a while back for cleaning up
> > unmodified GNIS-imported schools.  There were only a few of them
> > left around me, but the most common result was that an armchair
> > mapper would drag the node to a nearby non-house-looking building,
> > trace the building, and merge it with the imported node.  Not one
> > of these was actually a school.
> >   
> 
> Do you think this could have been prevented had there been better
> instructions?

No, I don't.  Sorting out which GNIS nodes are outdated and which are
merely misplaced isn't something that can reliably be done from aerial
imagery.  For something like "(historical)" GNIS nodes, it's better
just to delete all of them.

-- 
Mark

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