[BUG]: Odd polygon in land layer, extending into Canada on US choropleth

从失业率分级着色图示例开始，检查 plotly/datasets 仓库中引用的 geojson-counties-fips.json。比较西北部的几何图形以及 Oglala Lakota County 和 Kusilvak Census Area 的条目；完成的标准是示例不再显示该带状区域，并且体现出这些县的变更。

Description

There is an odd band extending from the northwest US into Canada when making a US choropleth. You can see this in the official documentation. I think this stems from the GeoJSON file included in Plotly. The file is very out of date, by the way, with changes to Oglala Lakota County in South Dakota and the Kusilvak Census Area in Alaska not being represented.

I can hide this band in the Python version using visible=False when calling update_geos().

Screenshots/Video

Steps to reproduce

• Create a new Python file
• Paste in the unemployment example from https://plotly.com/python/choropleth-maps/
• Run the python file

Notes

The unemployment example is here for completeness' sake:

from urllib.request import urlopen
import json
with urlopen('https://raw.githubusercontent.com/plotly/datasets/master/geojson-counties-fips.json') as response:
    counties = json.load(response)

import pandas as pd
df = pd.read_csv("https://raw.githubusercontent.com/plotly/datasets/master/fips-unemp-16.csv",
                   dtype={"fips": str})

import plotly.express as px

fig = px.choropleth(df, geojson=counties, locations='fips', color='unemp',
                           color_continuous_scale="Viridis",
                           range_color=(0, 12),
                           scope="usa",
                           labels={'unemp':'unemployment rate'}
                          )
fig.update_layout(margin={"r":0,"t":0,"l":0,"b":0})
fig.show()