List the tags added, modified or deleted by an OpenStreetMap changeset.
It needs to receive the data in the real-changesets format (example of a real-changesets file).
The osm-adiff-parser library can be used to produce real-changesets from OSM augmented diffs (.osc files).
The main purpose of this library is to input in OSMCha database the OSM tags that were affected by a changeset. That way, users will be able to query OSMCha with key/value tag combinations.
It uses two logics to determine the tags that will be included in the result.
On features that were created or deleted in a changeset, it includes only the main tags (check the list).
- Changeset that added a new
buildingwith the following tags:
building=yes
building:levels=2
addr:housenumber=31
addr:street=Calle 13
name=The House
will have only building=yes as the result.
- Changeset that deleted a road with the following tags:
highway=primary
surface=asphalt
name=Spring Road
ref=CL-001
will have only highway=primary as the result.
We include the main tags of the modified features and also the tags that were modified.
- Changeset that modified the tags of a
bankfrom:
amenity=bank
name=Unicaja Banco
operator=unicaja
to
brand=Unicaja Banco
brand:wikidata=Q2543704
brand:wikipedia=en:Unicaja
short_name=Unicaja
amenity=bank
name=Unicaja Banco
operator=unicaja
will have as the result:
brand=Unicaja Banco
brand:wikidata=Q2543704
brand:wikipedia=en:Unicaja
short_name=Unicaja
amenity=bank
- Changeset that modified the geometry of a stadium
If only the geometry changed, it will include only the main tag, so the result will be leisure=stadium.
The data returned by the createTagDiff function is an object whose each entry is an array.
{
amenity: ["restaurant"],
highway: ["service", "tertiary", "secondary_link", "footway"],
surface: ["asphalt", "paved"],
office: ["diplomatic"]
}
This library was funded by Wikimedia Italia.