如何在Python中将属性附加到GeoJSON文件？

Question

例如，我有一个带有以下要素的GeoJSON文件。

{ "type": "FeatureCollection", "working_width": 20, "features": [ { "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 28.4766, 12.5645456 ] } } ] }

如何像下面展示的那样为上述文件添加属性。

{ "type": "FeatureCollection", "working_width": 20, "features": [ { "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 28.4766, 12.5645456 ] }, "properties": { "fieldID": "2115145", "segmentId": "255c2s4c", "speed": 21.4586954, "elevation": 52.4586642, "time": "2018-05" } } ] }

- Manoj Deshpande

Answer 1

数据结构只是一个普通的Python字典，因此您可以像平常一样更新它：

>>> geojson 
{'type': 'FeatureCollection',
 'working_width': 20,
 'features': [{'type': 'Feature',
               'geometry': {'type': 'Point', 
                            'coordinates': [28.4766, 12.5645456]}}]}

>>> geojson['properties'] =  {'fieldID': '2115145', 
                              'segmentId': '255c2s4c', 
                              'speed': 21.4586954, 
                              'elevation': 52.4586642, 
                              'time': '2018-05'}

>>> geojson
{'type': 'FeatureCollection',
 'working_width': 20,
 'features': [{'type': 'Feature',
               'geometry': {'type': 'Point', 
                            'coordinates': [28.4766, 12.5645456]}}],
 'properties': {'fieldID': '2115145',
                'segmentId': '255c2s4c',
                'speed': 21.4586954,
                'elevation': 52.4586642,
                'time': '2018-05'}}

- fordy