Geopandas能否获取Geopackage的所有图层（或其他矢量文件）？

Question

我想使用geopandas读取geopackage文件，它可以使用layer =“''参数读取第一层或特定层。但是如何读取所有层？可能像：

all_layers = gp.read_xxxx('xxx.gpkg')
for layer in layers:
    # fetch this layer

Answer 1

您可以通过fiona和通过图层名进行操作 https://fiona.readthedocs.io/en/latest/README.html#reading-multilayer-data

for layername in fiona.listlayers('tests/data.gpkg'):
    with fiona.open('tests/data.gpkg', layer=layername) as src:
        print(layername, len(src))

如果您将其传递给Geopandas：

for layername in fiona.listlayers('test/data.gpkg'):
    geopkg = gpd.read_file(r'test/data.gpkg', layer=layername)
    i = 0
    for name in geopkg.columns:
        print(name)
        i += 1