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

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 The file is very out of date, by the way, with changes to Oglala Lakota County in South Dakota and the Kusilvak Census Area in Alaska not being represented.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()

Commencez par l’exemple de carte choroplèthe du chômage et examinez le fichier geojson-counties-fips.json référencé du dépôt plotly/datasets. Comparez la géométrie du nord-ouest et les entrées pour Oglala Lakota County et Kusilvak Census Area ; c’est terminé lorsque l’exemple n’affiche plus la bande et que ces modifications des comtés sont représentées.