geoTools.py 文件源码

def import_chip_geojson(geojsonfilename, ImageId=''):
    # driver = ogr.GetDriverByName('geojson')
    datasource = ogr.Open(geojsonfilename, 0)
    if ImageId=='':
        ImageId = geojsonfilename
    layer = datasource.GetLayer()
    print(layer.GetFeatureCount())

    polys = []
    BuildingId = 0
    for idx, feature in enumerate(layer):

        poly = feature.GetGeometryRef()

        if poly:
            BuildingId = BuildingId + 1
            polys.append({'ImageId': ImageId, 'BuildingId': BuildingId,
                          'poly': feature.GetGeometryRef().Clone()})

    return polys