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#1 2022-04-29 14:29:42
- FesterShinetop
- New Member
- Registered: 2022-04-29
- Posts: 1
Different number of nodes (schools) in OSM data in shp- and pbf-fomat
Dear OSM-experts,
I am quite new to OSM, and trying to use its data for my research topic.
First of all: thanks for making this possible!
I just stumble over an issue, which I cannot explain myself:
I downloaded the osm data for the Karlsruhe district (Regierungsbezirk Karlsruhe, NUTS2) at Geofabrik in .shp.zip and .osm.pbf format.
When I unpacked the .shp.zip-file and opened the file gis_osm_buildings_a_free_1.shp in arcMaps. Filtering for schools in the attribute table I found 1450 polygons.
After filtering the .osm.pbf.file for schools with Osmosis (osmosis --rbf karlsruhe-regbez-latest.osm.pbf --nkv keyValueList="amenity.school" --wx schools.osm), I opened the resulting file in JOSM. The file contained only 301 nodes and a school in my neighborhood, which is included in the shp ist oviously missing.
Can somebody explain, where this discrepancx might come from?
Thanks
Fester
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#2 2022-04-29 20:20:05
- Tordanik
- Moderator
- From: Germany
- Registered: 2008-06-17
- Posts: 2,840
- Website
Re: Different number of nodes (schools) in OSM data in shp- and pbf-fomat
Schools can be represented as points (nodes) or polygons (closed ways or multipolygon relations). It looks like your Osmosis command only considers nodes.
OSM in 3D: OSM2World
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