locationmode: 'USA-states'

Mix.install([
  {:plotly_ex, "~> 0.3"},
  {:kino, "~> 0.18"}
])

Section

locationmode: "USA-states" maps 2-letter postal abbreviations (e.g. "CA", "TX") to US state boundaries. Works with both Scattergeo (markers) and Choropleth (fills).

alias Plotly.{Figure, Scattergeo}

# All 50 US state abbreviations
states = ~w(AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD
            MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC
            SD TN TX UT VT VA WA WV WI WY)

Figure.new()
|> Figure.add_trace(
  Scattergeo.new(
    locations: states,
    locationmode: "USA-states",
    mode: "markers+text",
    text: states,
    textposition: "middle center",
    marker: %{size: 6, color: "darkblue", symbol: "circle"}
  )
)
|> Figure.update_layout(
  title: "locationmode: 'USA-states' — All 50 State Codes",
  geo: %{
    scope: "usa",
    showland: true,
    landcolor: "#EAEAAE",
    showlakes: true,
    lakecolor: "#BDDDE4"
  }
)
|> Plotly.show()