geopandas cannot read a geojson properly

问题

I am trying the following:

After downloading http://eric.clst.org/assets/wiki/uploads/Stuff/gz_2010_us_050_00_20m.json

In [2]: import geopandas
In [3]: geopandas.read_file('./gz_2010_us_050_00_20m.json')
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-3-83a1d4a0fc1f> in <module>
----> 1 geopandas.read_file('./gz_2010_us_050_00_20m.json')

~/miniconda3/envs/ml3/lib/python3.6/site-packages/geopandas/io/file.py in read_file(filename, **kwargs)
     24         else:
     25             f_filt = f
---> 26         gdf = GeoDataFrame.from_features(f_filt, crs=crs)
     27 
     28         # re-order with column order from metadata, with geometry last

~/miniconda3/envs/ml3/lib/python3.6/site-packages/geopandas/geodataframe.py in from_features(cls, features, crs)
    207 
    208         rows = []
--> 209         for f in features_lst:
    210             if hasattr(f, "__geo_interface__"):
    211                 f = f.__geo_interface__

fiona/ogrext.pyx in fiona.ogrext.Iterator.__next__()

fiona/ogrext.pyx in fiona.ogrext.FeatureBuilder.build()

TypeError: startswith first arg must be bytes or a tuple of bytes, not str

On the page http://eric.clst.org/tech/usgeojson/ with 4 geojson files under the 20m column, the above file corresponds to the US Counties row, and is the only one that cannot be read out of the 4. The error message isn't very informative, I wonder what's the reason, please?

回答1:

If your error message looks anything like "Polygons and MultiPolygons should follow the right-hand rule", it means the order of the coordinates in those GeoObjects should be clock-wise.

Here's an online tool to "fix" your objects, with a short explanation:

https://mapster.me/right-hand-rule-geojson-fixer/

回答2:

Possibly an answer for people arriving at this page, I received the same error and the error was thrown due to encoding issues.

Try encoding the initial file with utf-8 or try opening the file with an encoding which you think is applied to the file. This fixed my error.

More info here

来源：https://stackoverflow.com/questions/53890704/geopandas-cannot-read-a-geojson-properly

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pandas

geojson

geopandas