Construction proposals in OpenStreetMap

Daily extract of the proposals of constructions in metropolitan France present in the open and collaborative database OpenStreetMap (OSM) [1].

The layer is available in MAGOSM
— accessible via public WMS and WFS services
— viewable, searchable and downloadable via the portal
— analysable over the last 30 days via the Change Tracking Portal

Data model
The OSM attributes used to filter the data are:

• Proposed=VALUE + KEY=proposed — in the evolution logic of OSM objects common life cycle [2]
• Proposed: KEY=VALUE — in the evolution logic of OSM objects life cycle prefix [3]

We find in the metadata of the layer two attributes named ‘proposed_key’ and ‘proposed_value’ which are variables created in order to be able to retrieve keys and values in objects tagged with prefixes [3] EX: the proposed:aerialway=gondola tag will return proposed_key = ‘aerialway’ as key and proposed_value = ‘gondola’ as value (without retaining the prefix).

We find in the layer all the objects concerned whether they are mapped in the form of a node, path or relationship in OSM. For polygons and multi-polygons, the geometry provided corresponds to the centroid, the original geometry is available in EWKT format via the attribute ‘osm_original_geom’ and the original type in a column ‘osm_type’.

Additional OSM attributes have been selected to enrich the main tags.
All attributes prefixed by “osm” (e.g. osm_user, osm_id...) are common properties similar to meta-data on the OSM object.

More information about:

• the different life cycle concepts in OSM on the OSM Wiki page — EN: Comparison of life cycle concepts [2]
• the data model specific to the use of prefixes on the Wiki page OSM — FR:Prefix life cycle [3].
• the pre-construction data model on the Wiki page OSM — FR:Key:proposed[4].
• the general OSM data model is documented on the OSM Wiki page — Map Elements [5].
• the modes and frequencies of use and combination of different attributes within the OSM community on the TagInfo France service [6]

[1] https://wiki.openstreetmap.org/wiki/FR:Page_principale
[2] https://wiki.openstreetmap.org/wiki/FR:Comparaison_des_concepts_de_cycle_de_vie
[3] https://wiki.openstreetmap.org/wiki/FR:Pr%C3%A9fixe_cycle_de_vie
[4] https://wiki.openstreetmap.org/wiki/FR:Key:proposed
[5] https://wiki.openstreetmap.org/wiki/FR:%C3%89l%C3%A9ments_cartographiques
[7] https://taginfo.openstreetmap.fr

Credits
© OpenStreetMap contributors http://www.openstreetmap.org/copyright

This data is produced collaboratively under ODbL license which requires identical sharing and attribution mention “© OpenStreetMap contributors under ODbL license” in accordance with http://osm.org/copyright