如何将 MULTIPOLYGON 数据从 CSV 加载到 Bigquery？

Question

我正在尝试将 MULTIPOLYGON 数据从 csv 加载到 BigQuery。

csv 数据示例：

MULTIPOLYGON (((-87.6641550000406 41.95200900002041, -87.66414600001889 41.95172499998634, -87.66413300004291 41.951287000019256, -87.6641250000014 41.950975999991, -87.66411799997235 41.950710999997796, -87.66410699996321 41.95034600003051, -87.6640770000379 41.94925300002996, -87.66406700002733 41.948889000025126, -87.66405600002722 41.948524000007794, -87.66402699996873 41.94754299997942, - 87.6640239999718 41.947431999990286, -87.664014999989 41.94706800000302, -87.66425699995835 41.94706299998119, -87.66463300004028 41.947057000019434, -87.66498599997365 41.94705200001454, -87.6652299999552 41.94704900003057, -87.66547100004216 41.94704499999217, -87.66619700000436 41.94703200001018, -87.66643899997062 41.94702899996759, -87.66668100004101 41.94702499997284, -87.66740899996688 41.94701300001905, -87.66765200003078 41.947009999995494, -87.66789300003049 41.94700500002556 , -87.66825299997625 41.94700000001595, -87.66861599999213 41.94699100002117, -87.66866599995834 41.94698999 9984524, -87.66885799997794 41.946990000007425, -87.66886599999077 41.947353999977324, -87.6688750000215 41.947693000027144, -87.66889399995708 41.948214000019604, -87.66889900002306 41.948449000008935, -87.6689069999759 41.948814000013044, -87.66891599997123 41.949179000018155, -87.66894600003023 41.95027399996467, -87.6689559999787 41.950640000027136, -87.66896700002104 41.951005000030705, -87.66897100003573 41.951096999964946, -87.66898999998284 41.951944000026266, -87.6689930000197 41.952100000007114, -87.66900099996057 41.95246599997254, -87.66900800001966 41.95282999997927, -87.66901199997486 41.95299300002933, -87.66903400002491 41.95376499998745, -87.66903799997867 41.953924999970994, -87.66904899998285 41.95428999996699, -87.66874299998453 41.95429399998331, -87.66782499995624 41.9543060000087, -87.66751899999723 41.9543099999868, -87.66718399995784 41.95431399999949, -87.66679100003039 41.954318999986775, -87.66617900001958 41.954326999994244, -87.66584500001142 41.9543319999 7959, -87.66551799995953 41.95433599999768, -87.66454100003902 41.954349999976834, -87.66421499999196 41.9543549999717, -87.6642069999705 41.95399000002565, -87.6642040000364 41.95383100001683, -87.66418300000497 41.95305699999469, -87.66417899997418 41.95294300000901, -87.6641770000175 41.952896999978314, -87.66416900002824 41.95253299999764, -87.66415999996775 41.95222099998195, -87.6641550000406 41.95200900002041)))

我将 csv 数据读入 pandas 数据帧，当我使用

将数据加载到 bigquery 时

    job_config = bigquery.LoadJobConfig(
    schema=[
        bigquery.SchemaField("geo_column", bigquery.enums.SqlTypeNames.GEOGRAPHY),
    ],
    write_disposition="WRITE_TRUNCATE",
)

job = client.load_table_from_dataframe(
    df_gps_data, table_id, job_config=job_config
)
job.result()

它以 POLYGON((*******)) 的形式将数据插入 BigQuery 而不是 MULTIPOLYGON。

那么我如何才能将数据作为 MULTIPOLYGON 插入到 BigQuery 中？提前致谢。

Answer 1

问题是您描述的 MULTIPOLYGON 只有一个 POLYGON，里面基本上是一个普通的 POLYGON。

如果您如下定义 MULTYPOLIGON，然后 definition，您将在 BigQuery 中拥有一个 MultiPolygon。

MULTIPOLYGON (((40 40, 20 45, 45 30, 40 40)),
((20 35, 10 30, 10 10, 30 5, 45 20, 20 35),
(30 20, 20 15, 20 25, 30 20)))

如何将 MULTIPOLYGON 数据从 CSV 加载到 Bigquery？

How to load MULTIPOLYGON data from CSV into Bigquery?

geolocation

google-bigquery