How do I filter a GeoJson file for specific countries?

Challenge: I'm trying to create a new dictionary from my geojson dictionary that is filtered for only the countries of interest because the raw geojson file is too large for visualization.

I have a geojson file with the below form, which I've created an empty dictionary to replicate:

newData = {'features': {},             'properties':{'ADMIN':"",                           'ISO_A3':"",                           },             'geometry':{'type':"",                         'coordinates':""                         },             'id':""             }  

Below is an example of one of the elements from the geojson file:

data['features'][3]    {'type': 'Feature',   'properties': {'ADMIN': 'Aruba', 'ISO_A3': 'ABW'},   'geometry': {'type': 'Polygon',    'coordinates': [[[-69.99693762899992, 12.577582098000036],      [-69.93639075399994, 12.53172435100005],      [-69.92467200399994, 12.519232489000046],      [-69.91576087099992, 12.497015692000076],      [-69.88019771999984, 12.453558661000045],      [-69.87682044199994, 12.427394924000097],      [-69.88809160099993, 12.417669989000046],      [-69.90880286399994, 12.417792059000107],      [-69.93053137899989, 12.425970770000035],      [-69.94513912699992, 12.44037506700009],      [-69.92467200399994, 12.44037506700009],      [-69.92467200399994, 12.447211005000014],      [-69.95856686099992, 12.463202216000099],      [-70.02765865799992, 12.522935289000088],      [-70.04808508999989, 12.53115469000008],      [-70.05809485599988, 12.537176825000088],      [-70.06240800699987, 12.546820380000057],      [-70.06037350199995, 12.556952216000113],      [-70.0510961579999, 12.574042059000064],      [-70.04873613199993, 12.583726304000024],      [-70.05264238199993, 12.600002346000053],      [-70.05964107999992, 12.614243882000054],      [-70.06110592399997, 12.625392971000068],      [-70.04873613199993, 12.632147528000104],      [-70.00715084499987, 12.5855166690001],      [-69.99693762899992, 12.577582098000036]]]},   'id': 'ABW'}  

I also have a data frame object of the countries that I'm actually interested in analyzing:

df_Country.head()  2                   Italy  3                   Spain  4                Portugal  5    United Arab Emirates  6                   Egypt  

This file has a number of countries that are unnecessary for the analysis I'm performing so I'd like to filter them out. I believe that this is similar to filtering a nested dictionary. To do this I've tried to create an empty dictionary and loop through it adding in the values of the geo_data whenever I have a match to df_Countries. Below is what I've attempted:

for i in range(len(data['features'])):    if data['features'][i]['properties']['ADMIN'] in df_Country:      newData['properties']['ADMIN'] = data['features'][i]['properties']['ADMIN']      newData['properties']['ISO_A3'] = data['features'][i]['properties']['ISO_A3']      newData['geometry']['type'] = data['features'][i]['geometry']['type']      newData['geometry']['coordinates'] = data['features'][i]['geometry']['coordinates']      newData['id'] = data['features'][i]['id']  

At the end of this, my newData dictionary is still empty. Any thoughts? Thank you in advance!

https://stackoverflow.com/questions/65756275/how-do-i-filter-a-geojson-file-for-specific-countries January 17, 2021 at 08:51AM