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Update get_test_polygons.py for osmnx 1.6.0

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TODO - update `etl/requirements.txt` to reflect osmnx==1.6.0
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Tom Russell 2023-08-15 12:34:12 +01:00 committed by GitHub
parent 6d13ab8048
commit df65152198
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1 changed files with 31 additions and 22 deletions
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53
etl/get_test_polygons.py
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@ -21,43 +21,52 @@ size = 256
# load buildings from about 1.5km² around UCL # load buildings from about 1.5km² around UCL
point = (51.524498, -0.133874) point = (51.524498, -0.133874)
dist = 612 dist = 612
gdf = osmnx.footprints_from_point(point=point, dist=dist) tags = {"building": True}
gdf = osmnx.features_from_point(point, tags, dist=dist)
# preview image # preview image
gdf_proj = osmnx.projection.project_gdf(gdf, to_crs={'init': 'epsg:3857'}) gdf_proj = osmnx.projection.project_gdf(gdf, to_crs={"init": "epsg:3857"})
gdf_proj = gdf_proj[gdf_proj.geometry.apply(lambda g: g.geom_type != 'MultiPolygon')] # noqa gdf_proj = gdf_proj[gdf_proj.geometry.type == "Polygon"]
fig, ax = osmnx.plot_footprints(gdf_proj, bgcolor='#333333', fig, ax = osmnx.plot_footprints(
color='w', figsize=(4, 4), gdf_proj,
save=True, show=False, close=True, bgcolor="#333333",
filename='test_buildings_preview', dpi=600) color="w",
figsize=(4, 4),
save=True,
show=False,
close=True,
filepath="test_buildings_preview.png",
dpi=600,
)
# save # save
test_dir = os.path.dirname(__file__) test_dir = os.path.dirname(__file__)
test_data_geojson = str(os.path.join(test_dir, 'test_buildings.geojson')) test_data_geojson = str(os.path.join(test_dir, "test_buildings.geojson"))
subprocess.run(["rm", test_data_geojson]) subprocess.run(["rm", test_data_geojson])
gdf_to_save = gdf_proj.reset_index()[["osmid", "geometry"]]
gdf_to_save = gdf_proj.reset_index(
)[
['index', 'geometry']
]
gdf_to_save.rename( gdf_to_save.rename(
columns={'index': 'fid'} columns={"osmid": "fid"}
).to_file( ).to_file(
test_data_geojson, driver='GeoJSON' test_data_geojson,
driver="GeoJSON"
) )
# convert to CSV # convert to CSV
test_data_csv = str(os.path.join(test_dir, 'test_buildings.3857.csv')) test_data_csv = str(os.path.join(test_dir, "test_buildings.3857.csv"))
subprocess.run(["rm", test_data_csv]) subprocess.run(["rm", test_data_csv])
subprocess.run( subprocess.run(
["ogr2ogr", "-f", "CSV", test_data_csv, [
test_data_geojson, "-lco", "GEOMETRY=AS_WKT"] "ogr2ogr",
"-f",
"CSV",
test_data_csv,
test_data_geojson,
"-lco",
"GEOMETRY=AS_WKT",
]
) )
# add SRID for ease of loading to PostgreSQL # add SRID for ease of loading to PostgreSQL
subprocess.run( subprocess.run(["sed", "-i", 's/^"POLYGON/"SRID=3857;POLYGON/', test_data_csv])
["sed", "-i", "s/^\"POLYGON/\"SRID=3857;POLYGON/",
test_data_csv]
)