The database is no longer showing .zip files

[ireneeeeeeeeeee]

Hi,

I'm trying to download building footprints for Greece. There seems to no longer be .zip files and instead csv.gz files, is there a link to access GeoJSON files for Greece specifically?

When I import the JSON database into ArcGIS it only recognizes the region tiles and not the building footprint info.

Please help, thank you!

[Estharx]

Did anyone managed to work with the csv file with QGIS like we used to when it was directly GeoJSON ?

[andwoi]

The file contents are line delimited GeoJSON. On Windows you can do the following to extract and rename and ArGIS/QGIS will recognize:

Invoke-WebRequest url.to.csv.gz -outfile local.path.to.csv.gz
7z e local.path.to.csv.gz
Move-Item local.path.to.csv local.path.to.geojsonl

If you want to get all of Greece, you use a script like this and it might save some time:

import pandas as pd
import geopandas as gpd
from shapely.geometry import shape
dataset_links = pd.read_csv("https://minedbuildings.blob.core.windows.net/global-buildings/dataset-links.csv")
greece_links = dataset_links[dataset_links.Location == 'Greece']
for _, row in greece_links.iterrows():
    df = pd.read_json(row.Url, lines=True)
    df['geometry'] = df['geometry'].apply(shape)
    gdf = gpd.GeoDataFrame(df, crs=4326)
    gdf.to_file(f"{row.QuadKey}.geojson", driver="GeoJSON")

Edit: updated link for new location

[dotysan]

Those csv aren't csv, but instead json.

Here's a code snippet to extract and properly rename.

# url is looked up from dataset-links.csv
path = url.split('/')
gzfile = path[-1]
jsonfile = f'{gzfile[:-6]}json'
with gzip.open(gzfile, 'rb') as gz:
    with open(jsonfile, 'wb') as js:
        shutil.copyfileobj(gz, js)
os.remove(gzfile)