On 03/02/2025 09:10, Chris Andrew wrote:
You'll have seen an article in "WeeklyOSM 758", from the Heidelberg
Institute for Geoinformation Technology (HeiGIT):
https://heigit.org/osm-completeness-with-overture-maps-data/
The article explained how relatively simply, OSM 'completeness' can be
assessed using 'open and accessible' maps from the Overture Maps
Foundation. I'm wondering how this information can be used to improve
the quality of OSM coverage, in a prioritised (not automated) workflow.
To bowlderise a quote from Jim Royle, "OSM Completeness my posterior".
In GB, what Overture maps likely have that OSM does not are essentially:
* A bunch of alleged POIs that for the most part don't actually exist (1)
* Missing "roads" (what few are left that Amazon people didn't add
from oddly offset ESRI imagery (2)
* Missing "buildings (3)
(1) Whenever someone suggests this I normally just have a look in York
Minster to see see what car care etc. businesses are allegedly operating
from there. Unfortunately the visualisation I used to use for that (see
https://community.openstreetmap.org/t/poi-quality-and-usage-any-corporates-contributing/107488/8
) seems to have gone away. Anyone know of a current one?
(2) This included vital thoroughfares such as the patch of concrete
extending around that back of a local sewage works. Other than in the
case of new builds and temporary access roads I'd be surprised if there
was much missing that it actually made sense to add.
(3) There are _lots_ of missing buildings, and it's possible to get
hints of those in mainstream OSM editors. Each one does of course need
checking by a human - I've seen people add things like temporary
umbrellas as "buildings", which is clearly silly.
For example, could reports be run for an area(/s) and the results used
to create new tasks (MapRoulette)?
Rather that starting with Overture data I'd instead start somewhere like
Robert's excellent site https://osm.mathmos.net/ which has tools to
match lots of things, usually using data from more reputable sources.
Perhaps a useful route forward would be to write a diary entry or forum
post explaining how to get from the numbers alongside (say) Bensons for
Beds at https://osm.mathmos.net/chains/ and explaining what someone (who
may be new to OSM) needs to do to get their area up to date?
Best Regards,
Andy
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