我正在学习如何对国家的道路网络进行网络分析。我已经有了 shapefile。我一直在尝试将它们转换为 networkx，但没有取得多大成功，所以我尝试使用 ox.graph_from_file 函数来做到这一点。从 osm 获取国家级数据是耗时/内存的，而且对于我想做的事情来说太详细了。
我使用 mapshaper 将 shapefile 转换为 .xml 文件，但 ox.graph_from_file 不起作用。我只是这样称呼它：
ox.graph_from_file('/Users/macbookair/Downloads/road_rmms_v10_3.xml')
---------------------------------------------------------------------------
EmptyOverpassResponse Traceback (most recent call last)
<ipython-input-4-5f835eba75d0> in <module>()
----> 1 ox.graph_from_file('/Users/macbookair/Downloads/road_rmms_v10_3.xml')
/anaconda3/lib/python3.6/site-packages/osmnx/core.py in graph_from_file(filename, network_type, simplify, retain_all, name)
1898 # create graph using this response JSON
1899 G = create_graph(response_jsons, network_type=network_type,
-> 1900 retain_all=retain_all, name=name)
1901
1902 # simplify the graph topology as the last step.
/anaconda3/lib/python3.6/site-packages/osmnx/core.py in create_graph(response_jsons, name, retain_all, network_type)
1327 elements.extend(response_json['elements'])
1328 if len(elements) < 1:
-> 1329 raise EmptyOverpassResponse('There are no data elements in the response JSON objects')
1330
1331 # create the graph as a MultiDiGraph and set the original CRS to default_crs
EmptyOverpassResponse: There are no data elements in the response JSON objects
我不确定我说错了还是文件格式错误。