Plotly.express choropleth 仅显示一种颜色

我正在尝试使用创建一个 choroplethplotly.express。该图能够加载，但它只显示一种颜色。我可以将鼠标悬停在每个功能上，它会显示相关信息，但不以可变颜色显示。这意味着它正在读取 geojson 但无法正确显示。u/geds133 也有同样的问题 https://stackoverflow.com/questions/61966708/plotly-express-choropleth-only-showing-some-information-from-geojson，但由于声誉较低，我无法联系他们或发表评论。

这是我的“预测”df：

import pandas as pd
predictions = pd.read_csv("Predictions_DF_2002.csv")

predictions.head()

huc12           Predicted PRBT   Std
170102120304    30.677075        23.348831
170102120603    31.362211        23.784001
90400010201     5.697461         7.688427
100301040401    3.493039         5.36472
170101011208    4.421055         11.924093

我试图将 DataFrame 与 geojson 文件中的属性进行匹配：

#Read in geojson
import geopandas as gpd
import json


hucs = gpd.read_file(~/"HUC.geojson")

#Populate hucs['properties'] (i.e. convert to plotly-readible geojson-type)
hucs = json.loads(hucs.to_json())

#Print Properties for sanity check
print(hucs['features'][0]['properties'])

#...<a bunch of stuff we don't care about> 
{'huc12':170102120304}
#...

因此，我可以使用featureidkey参数来指定匹配值的位置locations如中所写the docs https://plotly.com/python/choropleth-maps/#choropleth-maps-with-gochoropleth。这是我用来创建分区统计图的代码：

fig = px.choropleth(predictions,
                    geojson=hucs, color='Predicted PRBT',
                    locations='huc12', featureidkey='properties.huc12',
                    color_continuous_scale="Viridis", labels={'Predicted PRBT':'Predicted % RBT'})
fig.update_geos(fitbounds="locations",visible=False)
fig.show()

And here is what the output shows. Note that mouse-over shows relevant information:

我的 geojson 和 csv 可供下载here https://drive.google.com/file/d/1yUBsWTeOUbKe8kkNQlE_tUKBsO_fV5h0/view?usp=sharing.

在绘图之前必须展开 geojson：

#Read in geojson
import geopandas as gpd
import json


hucs = gpd.read_file(~/"HUC.geojson")

#Populate hucs['properties'] (i.e. convert to plotly-readible geojson-type)
hucs = json.loads(hucs.to_json())

from geojson_rewind import rewind
hucs_rewound = rewind(hucs,rfc7946=False)


fig = px.choropleth(predictions,
                    geojson=hucs_rewound, color='Predicted PRBT',
                    locations='huc12', featureidkey='properties.huc12',
                    color_continuous_scale="Viridis", labels={'Predicted PRBT':'Predicted % RBT'})
fig.update_geos(fitbounds="locations",visible=False)
fig.show()

See https://github.com/plotly/plotly.py/issues/2354#issuecomment-638742767 https://github.com/plotly/plotly.py/issues/2354#issuecomment-638742767 and https://github.com/plotly/plotly.py/issues/2619 https://github.com/plotly/plotly.py/issues/2619