Thanks for the heads up. As I said, we are not in a rush here, and will
first transfer the discussion to the Montreal list, then start a page on
the import wiki and take it from there. On top, the pre-processing will
be a bit of work as well.
There is lots of data for the City of Montreal
If CC-BY 4.0 works great. I'd go for any addresses etc and any bus
stops you can get hold of as well.
Just be aware that we had a fairly large number of questions asked about
the license etc when we did Ottawa and one of the people questioning
referred the license to the LWG. Even the basis
Hi John,
Thanks for pointing me to the license website. The open data of the City
of Montreal is licensed CC-BY 4.0 and the City has explicitly granted
OSM the right to use the data on top of that. See:
http://donnees.ville.montreal.qc.ca/portail/licence/
StatsCan's Open Building Database
When you look at importing Montreal you might like to look at the following
first.
https://wiki.osmfoundation.org/wiki/OGL_Canada_and_local_variants
Note if the Montreal data in available through Stats Can and the federal
government open data license it might be better to use that data source
Mapping buildings in iD can be done accurately, however going back in time
to the Nepal earthquake generally speaking they were really poor quality.
Pierre first took an interest in data quality around this time. Well he
was interested before but grew more vocal. As part of 2020 a number of
Hi all,
After following the building import discussion for a while now, I wanted
to chime in as well.
After moving to Montréal from Germany recently, I got more engaged with
the local mappers here in MTL (beforehand, I was more analysing OSM data
scientifically).
I took part in the
Danny
Voici un exemple à partir des données d'Ottawa pour tester la fonction de
correction du Validateur. La requête Overpass ci-dessous permet d'extraire des
bâtiments jumelés pour les résidences Brookds sur le campus de l'Université
d'Ottawa.http://overpass-turbo.eu/s/FPT
La correction
J'ai constaté la même chose a tester CATools. Décevant.
Et merci à Dany, cette fonctionnalité est intéressante.La requête Overpass
ci-dessous extrait de grands immeubles à Ottawa, certains avec des formes
rectangulaires, d'autres avec des formes plus complexes, moitié rectangulaire,
plus
Thanks, it works. Need to run it a few times it looks like. On a random
Markham block went from 88 warnings down to 4 without ruining geometries,
which is acceptable IMO. May need to look into its parameters
(validator.RightAngleBuilding.maximumDelta
and validator.RightAngleBuilding.minimumDelta)
In JOSM, open the preferences dialog (F12), go to the data validator tab,
and click the "show informational level" checkbox (it is third from the
top). Any validation done will then check for "Building with an almost
square angle", which will appear under the Other tab. "Building with an
almost
En faisant une recherche josm + orthogonal, je trouve ce greffon qui semble
intéressanthttps://wiki.openstreetmap.org/wiki/JOSM/Plugins/CADTools Il
contient différentes fonctions pour corriger les polygones. Je vois que l'on
utilise une tolérance 85-95 pour les angles droits. Il est aussi
Danny,
Do you mind sharing how to fix almost square angles in JOSM? I remember
seeing such warning a year or two ago but for some reason I don't see it
anymore and can't find it in the Validator settings.
Did they remove it from the latest version of JOSM or you need to add this
rule manually?
If
It is an honor to participate in this good growth. May good
(province-at-a-time building) data enter OSM at the hands of skilled OSM
editors who have good instructions on "how" (the Import Plan can go that
distance, please finish it) as their skills of good editing OSM data push the
import
I largely agree with Yaro, but will say
1) It is possible to square almost square angles with JOSM - it has an
informational warning in validation, and automatically squares the angle by
slightly moving the offending node. This fix doesn't ruin the geometry of
the building, as pressing Q so often
Having reviewed the changeset, here are my 2 cents. OsmCha link for
reference: https://osmcha.mapbox.com/changesets/66881357/
1) IMO squaring is not needed in most of those cases.
- You can see difference between square and non-square ONLY at high zoom
level. And even then, it's not visible to
Mmm, careful with your language, John. The data "have a license which is
compatible with OSM's ODbL" (is an accurate way to say it). I believe that
took about eight years and was a difficult slog, a lot of hard work by many,
lessons learned from Ottawa, a determination by OSM's LWG, but it is
So I suggest that you name yourself as the coordinator on the wiki page for
Toronto that allows the local mappers in Toronto to import at the rate and
to the standard you suggest.
For the rest of the country the data is licensed to be acceptable to
OpenStreetMap thus anyone can set up their own
John,
You seem to be mostly addressing topics which have been brought up
elsewhere. My email was meant to address specific data quality issues in
Toronto, so I'm not sure how to respond to all of this.
To your broader question though, my position is that we *do* have the
volunteers and
My expectation was that the import would be based on the city's records of
foundations for the buildings.
I would not expect to see sheds etc.and I'd be quite happy to only get most
of the buildings. The rest can be added by local mappers at a later date.
My expectation is they will be
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