Folium outputs ValueError: missing geometries, however the geojson data looks normal. What am I missing?

Question

我目前正在尝试绘制推文数据集，我通过 Twitter Streaming API 收集并通过 folium 在交互式地图上转换为 geojson 文件。但是，当尝试使用下面的代码时，我收到如下所示的错误消息。

当然我检查了我的数据集，但它看起来很好（见下文）并且它在 geojson.io 上加载没有任何问题。我这里只是有叶的问题吗？因为据我所知，数据（和其中的几何图形）都很好。任何帮助将不胜感激！

这是我的数据示例：

{
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [13.4, 52.53]
            },
            "properties": {
                "text": "Busy 2 week ahead! This Saturday spinning all         night in the main room of humboldthain club -#berlin - then     traveling\u2026",
                "created_at": "Mon Apr 15 12:57:26 +0000 2019"
            }
        },
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [13.37, 52.50]
            },
            "properties": {
                "text": "OFFICE today.\n.\n.\n#berlin #berlinerphilharmonie #sanofi #eenewolke @ Sanofi Berlin",
                "created_at": "Mon Apr 15 12:59:23 +0000 2019"
            }
        }
    ]
}

这是代码：

from argparse import ArgumentParser
import folium
def get_parser():
    parser = ArgumentParser()
    parser.add_argument('--geojson')
    parser.add_argument('--map')
    return parser

def make_map(geojson_file, map_file):
    tweet_map = folium.Map(location=[50, 5],
                           zoom_start=5)
    geojson_layer = folium.GeoJson(open(geojson_file),
                                   name='geojson')
    geojson_layer.add_to(tweet_map)
    tweet_map.save(map_file)

if __name__ == '__main__':
    parser = get_parser()
    args = parser.parse_args()

    make_map(args.geojson, args.map)

这是错误：

"Traceback (most recent call last):
File "twitter_map_basic.py", line 21, in <module>
make_map(args.geojson, args.map)
File "twitter_map_basic.py", line 13, in make_map
name = 'geojson'>
File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\site-packages\folium\features.py", line 447, in __init__
raise ValueError<'Cannot render objects with any missing geometries. {!r}'.format(data)
ValueError: Cannot render objects with any missing geometries. <_io.TextIOWrapper name='staedteKlein.geojson' mode='r' encoding='cp1252'>

Answer 1

您必须先加载 geojson_file，然后再将其传递给 folium.GeoJson：

import json
geojson_layer = folium.GeoJson(json.load(open(geojson_file)),
                               name='geojson')

或者只传递文件名：

geojson_layer = folium.GeoJson(geojson_file,
                               name='geojson')

documentation 可以更清楚 data 中的 file 表示文件路径，而不是打开的文件描述符。

Folium outputs ValueError: missing geometries, however the geojson data looks normal. What am I missing?

Folium outputs ValueError: missing geometries, however the geojson data looks normal. What am I missing?

python

twitter

geojson

folium