Plotly Cloropleth Map has Holes in Certain States

April 19, 2022

I am looking to plot a map of state, value pairings using the cloropleth function in plotly.express library and for some reason I am seeing holes in the maps.

As you can see, there is a hole in Florida and in Utah, and I can’t figure out how to remove them. My code is as follows where state is just the two letter code for a state:

import plotly.express as px
fig = px.choropleth(df,
                    locations='state', 
                    locationmode="USA-states", 
                    scope="usa",
                    color='value',
                    color_continuous_scale="darkmint", 
                    title='Map'
                    )

There are no missing values in my data so this is an issue with plotly. Thanks.

>Solution :

Those holes aren’t going anywhere since they are in fact Great Salt Lake and Lake Okeechobe. But you can ignore them in your map with:

fig.update_layout(geo = dict(showlakes=False))

Plot

Complete code:

import plotly.express as px

fig = px.choropleth(locations=["CA", "TX", "NY"], locationmode="USA-states", color=[1,2,3], scope="usa")
fig.update_layout(geo = dict(showlakes=False))
fig.show()