[OSM-talk-be] Neighbourhoods in Ghent mapped as a point

[Santens Seppe]

Hi Pieter,

It might take a bit more work to join the boundaries of the neighbourhoods with the existing boundaries of the city and the city sections. If the open data of the city of Ghent should diverge from what is already in OSM, it should be decided upon which dataset has the truth, which is not always straightforward ☺

Cheers,

Seppe

Van: Lionel Giard [mailto:lionel.giard at gmail.com]
Verzonden: dinsdag 20 augustus 2019 9:54
Aan: OpenStreetMap Belgium
Onderwerp: Re: [OSM-talk-be] Neighbourhoods in Ghent mapped as a point

Yes the node approach is only done when the boundaries are unknown (and so this is an approximation) but in this case, as we have the boundaries as open data, we could add them indeed. You can see it in the wiki page too<https://wiki.openstreetmap.org/wiki/Key:place>. Thus, creating a polygon using the exact boundaries of the open data with the tag "place=neighbourhood" + "name=*" should be fine. You can just import a shapefile or similar format in JOSM for example, and tag it correctly.

Le lun. 19 août 2019 à 10:35, Pieter Colpaert <pieter at openknowledge.be<mailto:pieter at openknowledge.be>> a écrit :
Hi all,

Neighbourhoods in Ghent are mapped as a point. See for example
https://www.openstreetmap.org/node/2274965455

The problem with this is that nominatim will add the neighbourhood to an
address string, based on the nearest point. An address still in the
Brugse Poort therefore will get an obvious wrong neighbourhood attached
to it. See for example
https://nominatim.openstreetmap.org/search.php?q=appelstraat+27%2C+9000+Gent&polygon_geojson=1&viewbox=.
This point is in the Brugse Poort, but it is closest to the point of the
neighbourhood Malem.

Should we change these point to be polygons instead?

There is also an official Open Data list of “wijken” (which is not
entirely the same though) on the open data portal of the city of Ghent:
https://datatank.stad.gent/4/grondgebied/wijken → Should we map these
bounds in OSM as well? And how?

Kind regards,

Pieter

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