结合两个geojson状态邮政编码文件？

Question

我正在做一个需要使用US States Zip Code Data 的项目。我想合并两个 geojson 文件，同时保留这些文件中的数据。 geojson-merge https://github.com/mapbox/geojson-merge 这样做，但我希望有一个基于 python 的解决方案。

每个州都有一个单独的 *.json 文件。例如：

1. mt_montana_zip_codes_geo.min.json

2. nd_north_dakota_zip_codes_geo.min.json

   import json
   
   nd_boundary_file = r"C:\Data_ZipCodes_States\State-zip-code-GeoJSON-master" \
             r"\nd_north_dakota_zip_codes_geo.min.json"
   
   with open(nd_boundary_file, 'r') as f:
       nd_zipcode_boundary = json.load(f)
   
   mt_boundary_file = r"C:\\Data_ZipCodes_States\State-zip-code-GeoJSON-master" \
             r"\mt_montana_zip_codes_geo.min.json"
   
   with open(mt_boundary_file, 'r') as f:
       mt_zipcode_boundary = json.load(f)
   
   
   #This overwrote the mt_zipcode_boundary with the nd_zipcode_boundary into merged
   #merged = {**mt_zipcode_boundary, **nd_zipcode_boundary}
   
   #produced a file with two json objects one 'mt' and the other 'nd'
   data = {'mt': mt_zipcode_boundary, 'nd':nd_zipcode_boundary}
   
   #Also overwrote mt_zipcode_boundary
   mt_zipcode_boundary.update(nd_zipcode_boundary)
   

如何编写代码将这两个 geojson 文件合并到一个文件中？

Answer 1

这样的事情呢？

import json

fc = {
    'type': 'FeatureCollection',
    'features': []
}

with open("mt_montana_zip_codes_geo.min.json") as json_file:
    obj = json.load(json_file)
    fc['features'].extend(obj['features'])

with open("nd_north_dakota_zip_codes_geo.min.json") as json_file:
    obj = json.load(json_file)
    fc['features'].extend(obj['features'])

with open("merged.json", "w") as outfile:
    json.dump(fc, outfile)