Source: Shapefiles for the city of Austin, TX were generated why the HOT Export online service, then converted to GeoJSON using Fiona.
| Property | Description |
|---|---|
| entry count | 447820 |
| building | building type (OSM Key:building) |
| geometry | shape of a building (Note that OSM allows multipolygon structures) |
The building property has 89 possible values, but we could limit our search to only a few types like house and
appartments. This provides us with 703 entries for appartments, and 4945 entries for houses.
$ jq '[ .features[] | select(.properties.building == "house")] |length' austin-tx_planet_osm_polygon_polygons.json
4945
$ jq '[ .features[] | select(.properties.building == "apartments")] |length' austin-tx_planet_osm_polygon_polygons.json
703I am not sure how to programatically regenerate the data set.
Retrieve the dataset programmatically, convert it to geojson and extract the Sabina Appartments feature:
curl -sLO https://export.hotosm.org/downloads/8a430b3a-7b16-4c88-9b36-7da085b4d141/austin-tx_shp.zip
unzip austin-tx_shp.zip -d osm-austin
cd osm-austin
fio cat austin-tx_planet_osm_polygon_polygons.shp > austin-tx.geoson
grep -i "Harmon Avenue" austin-tx.geojson |grep -i 3400Sabina Appartments:
{
"features":[
{
"geometry":{
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],
"type":"Polygon"
},
"id":"809",
"properties":{
"access_roo":null,
"addr_house":"3400",
"addr_stree":"Harmon Avenue",
"building":"yes",
"building_m":null,
"name":"Sabina Apartments",
"osm_id":"7480556",
"osm_way_id":null,
"roof_mater":null
},
"type":"Feature"
}
]
}