[OSM-talk-fr] Ajouter à OSM données cadastres des bâtiments dans des communes vides des bâtiments

[Vincent de Château-Thierry]

Bonsoir Phil,

Le 13/02/2017 à 23:07, philh-591 a écrit :
> En anglais parce que je dois préciser - pardon.
>
> Near me in sud Gironde there are a number of small rural communes with
> no buildings at all mapped in OSM.  Is it OK to take the building data
> for an entire commune from http://cadastre.openstreetmap.fr/ and upload
> it all into OSM?

Yes it is. What you describe below is the way everyone should use the 
french cadastre data to add buildings. So feel free ;)
---------------------
C'est bien la marche à suivre, oui ! Prendre son temps, intégrer et 
combiner plutôt qu'uploader brutalement.

> I don't mean I'll just do it blindly.  I'll check carefully for existing
> buildings first and exclude them from the upload.  If there are just 2
> or 3 buildings I'll check to see whether I should transfer their tags
> over and update them or not.
>
> I'll only do 1 or 2 communes at a time.  After each upload I'll wait a
> day or so for Osmose to run, then check and fix errors and warnings that
> it reports.
>
> I'll use JOSM for the upload and to fix any problems.  I understand the
> importance with JOSM of always using "Paste at source position" if
> copying and pasting buildings from the cadastral data, so that the precise
> positioning from the cadastral data source is retained.
>
> Previously I've added blocks of buildings in empty areas by selecting
> patches
> of areas around where I'm adding mapping detail and uploading.  See the
> main road between Langon and Bazas for some examples.  It was while doing
> this that I noticed some completely empty communes such as Aubiac.
>
> I wouldn't try this on an urban commune which would have far too many
> buildings, but it seems like it should be OK for small rural communes.
>
> I've installed the reverter plugin to JOSM, so I'll be ready to undo any
> of my changesets that make a mess.

vincent